taxonID	type	description	language	source
03BCA619FFD2D80095ADFD82FB70FA98.taxon	description	Based on ten genes (COI and 9 nuclear genes), the subfamily Nematinae is strongly supported as monophyletic (Fig. 1), as found in previous molecular phylogenetic analyses with adequate taxon and gene sampling (Prous et al. 2014; Malm & Nyman 2015; Vilhelmsen et al. 2024; Wutke et al. 2024). Support for monophyly of Nematinae based on morphology is ambiguous (Vilhelmsen 2015). Unusually, some genera of Nematinae (Analcellicampa, Caulocampus, Cladius, Hoplocampa, Monocellicampa, and Susana) are classified under a separate subfamily Hoplocampinae Rohwer, 1911 in NCBI GenBank. This arrangement of genera (Hoplocampinae) finds no support in any phylogenetic analyses (Prous et al. 2014; Malm & Nyman 2015; Vilhelmsen 2015; Fig. 1), except perhaps a classification proposal by Wei & Nie (1998), which is not widely accepted (Taeger et al. 2010). The genera of Hoplocampinae are strongly supported as part of Nematinae radiation, but the exact relationships between many of these and the other genera of Nematinae are poorly supported (Prous et al. 2014; Malm & Nyman 2015; Niu et al. 2021; Fig. 1). The best supported clades within the Nematinae are Dineurini Ashmead, 1898 (Prous et al. 2014) and Nematini (Figs 1 – 2), the latter containing the majority of species of Nematinae (more than 75 %), including the genus Euura.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFD2D80095ADFD82FB70FA98.taxon	discussion	Phylogeny and groups of Euura The core of the genus Euura (i. e., without the Euura epilosa group) is strongly supported as monophyletic based on phylogenetic analyses of ten genes (Fig. 2). The Euura epilosa group (sampled species E. brachycera and E. epilosa) is weakly or moderately supported as the sister group of the core of Euura (Fig. 2). The Nematus wahlbergi group is found as the sister group of Euura with moderate support, rendering Nematus paraphyletic (Fig. 2). Nematus together with E. brachycera (DEI-GISHym 86097 as the only representative of the group which was identified as Nematus spec.) formed a weakly supported sister clade of core Euura in a previous analysis based on a smaller dataset (Prous et al. 2019). Euura brachycera (Lindqvist, 1975) (Euura brevicera Taeger & Blank, 2014 is an unnecessary replacement name) was transferred to Euura by Prous et al. (2014), although no genetic data was available for this or other related species at the time. Even though the Euura epilosa group is not genetically strongly supported as a member of Euura, we retain it in this genus because of its similar morphology [see under Euura epilosa (Lindqvist, 1970)]. To reconstruct internal phylogeny of Euura, we excluded mitochondrial COI, because of strong conflict with nuclear genes: in some cases even above group level (see under Mitonuclear discordance). For most species we included 1 – 2 specimens having the greatest amount of sequence data, but more specimens in some cases because of large genetic variability (Fig. 3). At the base of core Euura (excluding the Euura epilosa group) 15 clades are well-supported, but relationships among them are poorly resolved (Fig. 3). In combination with morphology, we have defined 37 species groups, 7 of which are gall-makers (Liston et al. 2017), and 12 species not assigned to groups. The largest well-supported clade (clade A) includes roughly 30 % of species of Euura, containing most of the former “ Amauronematus ” (including former “ Pontopristia ”, but excluding “ Brachycoluma ”), i. e., the punicea group sensu lato (s. lat.), and flavescens, scutellata, miliaris, melanocephalus, vicina, caeruleocarpus groups, and some species not assigned to groups (imperfecta, salicis, distinguenda, anthracina, hyperborea) (Fig. 3). Within this clade, the punicea group s. lat. is strongly supported, containing the former “ Amauronematus ” groups: aegra, amentorum, histrio, humeralis, longiserra (not monophyletic based on nuclear data), opacipleuris, punicea sensu stricto (s. str.), toeniata, tunicata, variator, vittata, and E. brunnea not assigned to a group. Clade A also includes a well-supported clade comprising the miliaris, scutellata, and flavescens groups, where the last two may be sisters. The second largest well-supported clade comprises the gallmakers, followed by three other well or moderately supported clades containing two groups each: miltonota + viduata, myosotidis + bipartita, and pallescens + ribesii (Fig. 3). A neighbour-joining distance tree including specimens with minimum of 1529 bp of nuclear data (1381 specimens) is included as supplementary material. Within-species genetic diversity in Euura Without any knowledge of species boundaries, it is possible to get information about within-species genetic diversity based on haplotype divergence of nuclear genes of single individuals. As Hymenoptera are haplodiploid (males are haploid, females diploid), this assessment is normally only possible for female individuals (although rare diploid males exist). Averaging across individual females with at least 1529 bp of nuclear data, the average divergence between the haplotypes in Euura is 0.32 % (max 1.41 %). When considering all individuals of each species as delimited here, the average within-species divergence is 0.23 %. This is counter-intuitive, as within-individual haplotype divergence should underestimate within-species divergence; however, this result is because we coded heterozygous positions using IUPAC ambiguity symbols, which are treated as missing data in the calculations. When only males are considered (i. e., hemizygous, therefore no ambiguous positions), average within-species divergence is 0.42 %, which is larger than estimated from within-individual female haplotypes. Consistent with morphological observations, the between-species genetic divergence within species groups is often only slightly larger (on average varies between 0.5 – 2.1 %) than within-species divergence, highlighting the difficulty of delimiting species in Euura. Mitonuclear discordance As in Pristiphora (Prous et al. 2017), in Euura there is a strong conflict between mitochondrial COI on one hand, and nuclear and morphological data on the other hand when delimiting species – or even groups above species level in some cases (see supplementary distance COI and nuclear trees). Currently, over 50 % of the species in Euura cannot be reliably identified using COI sequences. However, the precision of identification could probably be increased by comparing exact COI variants (i. e., differing by at least one nucleotide), which often correlate with species boundaries. At present, due to the large diversity of COI variants, the correspondence between exact variants and species has not yet been established in most cases. Many additional COI variants (hundreds, if not thousands) can be expected in Finland alone, where more than 4500 Euura specimens have been barcoded. Even ignoring this challenge, different species frequently have identical sequences: based on current data (> 1300 specimens for which nuclear genes are also available) this is the case for 47 species using just the standard barcode region, or 42 species using the full 1078 bp. This is more than 20 % of the species, not counting gall-makers. Identification success using COI in Euura may be higher in southern and central Europe because of lower species richness and lower within-species genetic diversity. Notably, in about 15 % of species, genetic diversity is sufficiently high that species identification based on 1 – 2 nuclear genes can also be ambiguous. The success rate increases when more nuclear genes are included. Remarkably, in some cases there is strong disagreement between mitochondrial COI and nuclear genes for delineating groups of species. The most remarkable is the non-monophyly of the E. amentorum group based on COI, contrasting with strong support based on nuclear genes (Liston et al. 2023). Another example, albeit less extreme, is the clade comprising the E. histrio, E. variator, and E. opacipleuris groups, wherein groups can be delimited well by morphology and nuclear genes, but COI sequences of the same species can in several cases appear to belong to different groups. There are a few other such examples throughout Euura (see supplementary distance COI and nuclear trees of the specimens analysed here). Intraindividual mitochondrial variants in Nematinae As already reported (Prous et al. 2021; Liston et al. 2023), multiple intraindividual COI variants have been detected in many Nematinae using Nanopore sequencing. The vast majority of these variants appear to be functional, because they lack stop codons or frame shifting indels (insertions or deletions). This would suggest heteroplasmy, rather than the presence of nuclear-encoded mitochondrial pseudogenes (NUMTs). Excluding the detectable NUMTs, about 25 % of about 1000 specimens still have more than one apparently functional variant (1078 – 1087 bp amplicons). It is possible that some of the detected intraindividual variants are PCR chimeras (if there is mixture of different sequences, DNA polymerase sometimes switches the template molecule during PCR), but this seems to be a minor issue. This is indicated by the fact that for nuclear genes of males (which are haploid) almost always only a single variant is detected (contrasting with frequent multiple COI variant detection) and for nuclear genes of females (diploid) usually two variants are detected (sometimes one, almost never more than two), again contrasting with frequent detection of more than two variants for COI. We did notice possible PCR chimeras among single Nanopore reads and sometimes detected such consensus variant sequences, but these have usually been of sufficiently low frequency that the variants are not detected or the variants have been filtered out because of low read counts. The frequent presence of multiple COI variants within the same individual has also been evident in the results of Sanger sequencing (Prous et al. 2021), although this method does not allow determination of the number and exact sequences of the variants, unlike Nanopore sequencing as employed here. Interestingly, the presence of heteroplasmy seems to correlate well with mito-nuclear discordance: the groups where species boundaries are more reliably defined by nuclear than mitochondrial DNA tend also to have a higher incidence of heteroplasmy. If the mis-match between mitochondrial and nuclear sequences in terms of species boundaries is mainly due to occasional hybridisation between species (a pattern expected in theory for haplodiploid species and at least partly supported by empirical studies; Linnen & Farrell 2007; Patten et al. 2015; Prous et al. 2020), then this could also explain the extensive occurrence of heteroplasmy, which has been suggested to be more likely when heterospecific hybridization has occurred (Ladoukakis & Zouros 2017; Mastrantonio et al. 2019). A neighbour-joining distance tree including specimens with a minimum of 621 bp of COI sequence and the detected variants (1905 specimens, 2254 sequences) is included in the supplementary material. Possible diploid males and tri- or tetraploid females In a few instances, sequencing of multiple nuclear genes consistently indicated two haplotypes for males and three or even four haplotypes in Euura vaga females. Diploid males are known (Naito & Suzuki 1991; Harper et al. 2016) and can be found in nature (Cook et al. 2013). They are usually sterile, less viable, or both, and are produced (instead of females) when there is no heterozygosity at the complementary sex determination (CSD) locus (Naito & Suzuki 1991; Harper et al. 2016). Although polyploidy is apparently rare among parthenogenetic haplodiploids (van der Kooi et al. 2017), the largely parthenogenetic European E. vaga might be an additional example.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFD2D80095ADFD82FB70FA98.taxon	biology_ecology	Host plants Host plants are known for 88 % of the West Palaearctic species of Euura, most of which feed on Salix L. (73 %). Other utilized hosts are Betula L. (7 % of the species), Polygonoideae Eaton (Polygonaceae) (3 %), Poales E. Small (3 %), Ribes L. (3 %), Faboideae Rudd (Fabaceae) (2 %), Populus L. (2 %), Picea A. Dietr. (2 %), Larix Mill. (1 %), and Vaccinium L. (1 %). Alnus Mill., Aruncus L., Comarum L., Fagus L., Rhododendron L., and Spiraea L. are hosts for only one (0.4 %) species each in the West Palaearctic. To identify host plants of swept larvae, we amplified the ITS 1 - 5.8 S-ITS 2 region with plant-specific primers. Two Nanopore runs of 96 specimens containing mostly larvae (half of thorax cut from left or right side) and one run of 96 specimens containing mostly adults (legs) were done. The larval dataset contained about 49 000 demultiplexed and quality-filtered plant ITS reads per Gb of data (56 000 reads out of 1.8 Gb and 165 000 out of 2.7 Gb for each of the two nanopore runs). The adult dataset contained about 17 000 ITS reads out of 0.8 Gb, which would be about 21 000 reads per Gb. If only specimens with at least 100 plant ITS reads are considered, 120 specimens out of 192 were successfully sequenced in the two runs comprising mainly larvae. Three cases in the larval dataset were clear contaminations (e. g., a mixture of Urtica L. and Cucumis L. for an Euura vittata larva) or a likely contamination (Salix? phylicifolia L. for an adult Euura hartigi, although this host is possible). In the mostly adult dataset, 32 specimens could be considered successfully sequenced (at least 100 plant ITS reads), but most of these (30) can be considered contaminations (mostly Salix and Betula, but only one third of these matched the expected larval host genus of the species). Two larvae included in the mostly adult dataset yielded sequences of the expected host (Betula for Euura cadderensis and Scolioneura betuleti larvae). Although contaminations in the lab or field (e. g., pollen) are clearly likely, we consider the first host plant evidence for Euura leptostigma and E. sordidiapex based on these results to be sufficient. For three E. leptostigma larvae identical Salix consensus sequences were recovered with high coverage (about 120, 4500 and 8000 ×) and without indication of other variants. For two E. sordidiapex larvae, three different Betula haplotypes were recovered with high coverage (900 and 1700 ×) and without indication of other plant species. One of the sequenced E. leptostigma larvae was collected from a grey Salix (S. glauca L. or S. lapponum L.), although in the rearing lab other species of Salix may have been offered. The other two specimens of E. leptostigma were collected from a mixture of Salix. Additionally, three adults of E. leptostigma have been reared from Salix phylicifolia and unidentified Salix. The two sequenced E. sordidiapex larvae were collected from Betula nana L. and B. pubescens Ehrh.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFCAD800977DFADFFBABF84B.taxon	description	The genus is mostly defined based on genetic data. When the Euura epilosa group is excluded, the genus is strongly supported as monophyletic based on phylogenetic analyses of 10 genes (Fig. 2). Unfortunately, no clear morphological characters have been found that define the genus reliably. We provide here a key to separate Euura from the other similar Nematinae genera. Commonly observed high morphological similarity between species of Euura (sometimes even between species belonging to different groups) in combination with large within-species variability (e. g., colouration varying from mostly black to mostly pale) often makes species identification difficult without nuclear DNA. Identifications based on COI can often be even more misleading than those based on morphology, but can still in many cases be useful to identify the groups where this is difficult using morphological characters. In some cases, we do have COI sequence data for the types, but obtaining nuclear data for the old material would be much more challenging. Therefore, we have mostly relied here on sequencing of COI and nuclear DNA from a large number of fresh specimens to cover as much morphological variability as possible, in order to better match them with the available types. This does not guarantee correct identifications of all the types, meaning that some of the types might here be wrongly placed, and in the worst case a change of valid name may be required once nuclear data becomes available (which in any case might not be possible for all types).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFCBD83195ACFEEEFAFFFCFB.taxon	description	As supported by genetic data, the genera comprising the Dineurini form a monophylum distinct from the Nematini. However, Dineura and Nematinus of the Dineurini are morphologically very similar to some Nematini. For practical reasons, they are included in the key below. Specimens of Anoplonyx and Platycampus can also be confused with members of Nematini, but in their forewing the base of vein 2 A + 3 A is complete and curved up to 1 A (cell PA closed) (Prous et al. 2019). When in extremely rare cases specimens of Nematini have this wing character, or Anoplonyx and Platycampus lack it, consider additional characters. Anoplonyx females have a distinctly emarginate clypeus, simple claws, valvula 3 not tapering towards apex and with a distinct or indistinct invagination posteriorly, lancet with spurette (ventrolateral spines), and black head. Anoplonyx males have emarginate clypeus, simple claws, black head and thorax, and distinct penis valves (distinctly expanded ventrally, valvispina clearly extending beyond ventroapical lobe of paravalva, valviceps dorsoapically with hair). Platycampus has an emarginate clypeus, at least a minute subapical tooth of claws, black head and thorax, usually yellow legs, strongly sclerotized lancet with large microdenticles of serrulae and numerous spine-like setae or ctenidia on annuli, and a distinctive penis valve (valvispina not extending beyond ventroapical lobe of paravalva which apically forms a filament, valviceps dorsoapically with hair). Stauronematus, although isolated in its own clade according to genetic data, closely resembles Pristiphora in external morphology, but is distinguished from all other West Palaearctic Nematinae by the large and sharply angled basal lobe of the bifid tarsal claws, with the distance between the basal lobe and the inner tooth approximately equal to the distance between the two teeth.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFFCD836972EFCF7FB6BFBAA.taxon	materials_examined	Type material examined Holotype Euura (Euura) elaeagnos AUSTRIA – Salzburg • ♀; Radstätter Tauern, Untertauern; 47.30 ° N, 13.51 ° E; 1600 m a. s. l.; 25 Aug. 1992; J. - P. Kopelke leg.; reared ex galls Salix eleagnos Scop.; SMH, GBIF-GISHym 3720.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFFCD836970EF9F3FC76F81F.taxon	materials_examined	Type material examined Holotype Euura (Gemmura) gemmafoetidae AUSTRIA – Salzburg • ♀; Tauernpass, Obertauern; 47.25 ° N, 13.55 ° E; 1740 m a. s. l.; 25 Aug. 1992; J. - P. Kopelke leg.; reared ex galls Salix foetida; SMH, GBIF-GISHym 3712.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFFCD836970EF9F3FC76F81F.taxon	biology_ecology	Hosts plants	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFFDD8379702FEEEFA8EFD92.taxon	materials_examined	Type material examined Holotype Euura (Gemmura) gemmahelveticae AUSTRIA – Tirol • ♀; Ötztal, Vent, Rofental; 46.85 ° N, 10.89 ° E; 1900 – 2000 m a. s. l.; 28 Jun. 1983; J. - P. Kopelke leg.; reared ex galls Salix helvetica Vill.; SMH, GBIF-GISHym 3717.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFFED8349733FEEEFB33FD92.taxon	materials_examined	Type material examined Holotype Pontania elaeagnocola AUSTRIA – Tirol • ♀; Karwendel, Gramai-Alm; 47.41 ° N, 11.63 ° E; 1270 m a. s. l.; 29 Jun. 1989; J. - P. Kopelke leg.; reared ex galls Salix eleagnos Scop.; SMH, GBIF-GISHym 3726.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFFED8349724FD22FC6EFC5E.taxon	materials_examined	Type material examined Holotype Pontania helveticae AUSTRIA – Tirol • ♀; Venter Tal, Gample; 46.86 ° N, 10.92 ° E; 1800 m a. s. l.; 28 Jun. 1983; J. - P. Kopelke leg.; reared ex galls Salix helvetica Vill.; SMH, GBIF-GISHym 3729.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFFED8349752F95DFB5DF845.taxon	materials_examined	Type material Holotype, not examined. FRANCE – Hautes-Alpes • ♀; Saint-Véran, La Chapelle-de-Clousis [Chapelle Notre Dame de Bon Secours de Clausis]; 44.67 ° N, 6.92 ° E; 2450 m a. s. l.; 13 Jul. 1985; J. Lacourt leg.; CTN.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFFFD83594FFFB36FAFFF9C0.taxon	materials_examined	Type material examined Holotype Phyllocolpa pschornwalcheri AUSTRIA – Salzburg • ♀; Ramsau, Silberklamm [Silberkarklamm]; 47.44 ° N, 13.72 ° E; 1200 m a. s. l.; 29 Jul. 2003; J. - P. Kopelke leg.; reared ex galls Salix appendiculata Vill.; SMH, GBIF-GISHym 21235.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFFFD8359723FE37FC94FC8B.taxon	materials_examined	Type material examined Holotype Pontania (Phyllocolpa) maroccana MOROCCO – Rif • ♀; Jbel Tidighine; 34.84 ° N, 4.52 ° W; 1720 m a. s. l.; 7 Jun. 1972; J. Lacourt leg.; on Salix acuminata Mill.; CTN, GBIF-GISHym 31703.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFFFD8359714F935FB6AF86B.taxon	materials_examined	Type material examined Holotype Phyllocolpa spirappendiculata AUSTRIA – Salzburg • ♀; Defereggental, Erlsbach; 46.92 ° N, 12.26 ° E; 1560 m a. s. l.; 7 Aug. 2002; J. - P. Kopelke leg.; reared ex galls Salix appendiculata Vill.; SMH, GBIF-GISHym 21233.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF0D83A9756FB42FCCEFA76.taxon	materials_examined	Type material Holotype not examined. Material examined SLOVAKIA • ♂; Belanské Tatry Mountains; 49.24 ° N, 20.23 ° E; 1800 – 2000 m a. s. l.; 4 Sep. 1960; K. Beneš leg.; reared ex galls Salix alpina Scop.; CKB.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF0D83A9734FEEEFB75FDB1.taxon	materials_examined	Type material examined Holotype Phyllocolpa spirhelvetica SWITZERLAND – Valais • ♀; Grimselpass, Grimselsee; 46.57 ° N, 8.30 ° E; 1900 m a. s. l.; 29 Aug. 1998; J. - P. Kopelke leg.; reared ex galls Salix helvetica Vill.; SMH, GBIF-GISHym 21234.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF0D83B9733F8AFFB7FFE1C.taxon	materials_examined	Type material examined Holotype Pontania breviserratae SWITZERLAND – Valais • ♀; Saas Almagell; 46.06 ° N, 7.96 ° E; 2000 m a. s. l.; 14 Aug. 1994; J. - P. Kopelke leg.; reared ex galls Salix breviserrata Flod.; SMH, GBIF-GISHym 3725.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF1D83B9724FE5CFBC2FD23.taxon	materials_examined	Type material examined Lectotype Nematus rubidicornis, here designated SWITZERLAND • ♀; Jura Mts; Desbrochers leg.; ZIN, DEI-GISHym 89377.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF1D83B9750FCD1FD68FB31.taxon	materials_examined	Type material examined Holotype Pontania foetidae AUSTRIA – Tirol • ♀; Zillertal, Hintertux, Weitental; 47.10 ° N, 11.65 ° E; 1700 m a. s. l.; 22 Aug. 1983; J. - P. Kopelke leg.; reared ex galls Salix foetida DC.; SMH, GBIF-GISHym 3727.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF1D83B9750FCD1FD68FB31.taxon	biology_ecology	Hosts plants Salix foetida, S. waldsteiniana (Kopelke 2003)	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF1D83B9736FB38FD60F921.taxon	materials_examined	Type material examined Holotype Pontania montivaga AUSTRIA – Tirol • ♀; Zillertal, Hintertux, Weitental; 47.10 ° N, 11.65 ° E; 1800 m a. s. l.; 1 Sep. 1982; J. - P. Kopelke leg.; reared ex galls Salix foetida DC.; SMH, GBIF-GISHym 3732.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF1D83B9736FB38FD60F921.taxon	biology_ecology	Hosts plants Salix foetida, S. waldsteiniana (Kopelke 2003).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF2D8389729FEEEFB64FD92.taxon	materials_examined	Type material examined Holotype Pontania maculosa AUSTRIA – Tirol • ♀; Ötztal, Venter Tal, Am Spiegel; 46.84 ° N, 10.93 ° E; 1800 m a. s. l.; 17 Aug. 1983; J. - P. Kopelke leg.; reared ex galls Salix helvetica Vill.; SMH, GBIF-GISHym 3731.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF2D838973FFCE1FD30FB01.taxon	materials_examined	Type material examined Holotype Pontania (Phyllocolpa) pedicellatae Morocco – High Atlas • ♀; Talat n’Nos; 1150 m a. s. l.; 2 Mar. 1973; J. Lacourt leg.; on Salix pedicellata Desf.; CTN, GBIF-GISHym 31702.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF2D838973FFCE1FD30FB01.taxon	biology_ecology	Hosts plants Salix pedicellata Desf. (Liston et al. 2017).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF2D838975AFA93FDB9F8CA.taxon	materials_examined	Type material Syntypes (BMNH), not examined. Material examined SWITZERLAND – Valais • 2 ♀♀; Lac Vaux near Verbier, Mt Rogneux; 46.01 ° N, 7.23 ° E; 2740 m a. s. l.; 27 Jun. 1959; R. B. Benson leg.; BMNH.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF2D838975AFA93FDB9F8CA.taxon	biology_ecology	Hosts plants Salix retusa L. (Kopelke 2003).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF3D839977CFCF1FE80FB0E.taxon	discussion	The species group was revised by Prous et al. (2021): see there for details of type material, synonymy, host plants, distribution, and identification characters.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF3D839977CFCF1FE80FB0E.taxon	description	Most of the females are very similar to each other and to those of the E. oligospila group, but male penis valves can in most cases be reliably used to distinguish species. The most distinctive females are E. brevivalvis (short valvula 3 and saw compared to the other species) and E. leptocephalus (reddish pale colouration, rather than yellowish or greenish in life as in the other species). Externally, Euura leptocephalus is very similar E. reticulata (E. flavescens group), but the saws are different (Prous et al. 2021).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF3D839973AFB49FDD9F9FE.taxon	description	Figs 89, 324	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF3D839973AFB49FDD9F9FE.taxon	materials_examined	Type material examined Lectotype Nematus macrocerus, here designated GERMANY • ♀; northern Germany [according to Hartig 1840: 22]; ZSM, DEI-GISHym 3343.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF3D839973AFB49FDD9F9FE.taxon	discussion	Notes Nematus macrocerus has usually been treated as a junior synonym of Euura ribesii, e. g., by Dalla Torre (1894) and Taeger et al. (2010). Examination of the penis valve of the syntype GBIF-GISHym 3343 establishes it as Euura bergmanni.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF3D8399727FE8AFC2BFD66.taxon	description	Figs 186, 415	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF3D8399727FE8AFC2BFD66.taxon	materials_examined	Type material examined Lectotype Nematus nigritarsis, here designated FRANCE • ♀; South of France; Desbrochers leg.; ZIN, DEI-GISHym 89372.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF3D8399727FE8AFC2BFD66.taxon	discussion	Notes The synonymy with viminalis by Konow (1905 b) is confirmed.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF4D83E975FFD7DFC99FB45.taxon	description	Fig. 334	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF4D83E975FFD7DFC99FB45.taxon	discussion	Notes One male specimen (ZMUO. 033968) could represent an additional species in the bergmanni group, based on nuclear genes, but it does not appear to differ morphologically from E. viridis or E. glutinosae.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF4D83E975FFD7DFC99FB45.taxon	description	Genetics COI Only one sequence available. The nearest neighbour, diverging by a minimum of 0.61 %, is Euura viridis. Nuclear Only one sequence available. The nearest neighbour, diverging by a minimum of 0.5 %, is Euura viridis.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF4D83E975FFD7DFC99FB45.taxon	distribution	Distribution and material examined Palaearctic. The studied specimen is from Finland.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF4D83F976DFB14FC86FECF.taxon	description	Species in the group are generally rather similar to each other and can easily be confused with some species in the other groups (particularly myosotidis and flavescens groups). The saws and penis valves are also rather uniform. Saws can be quite similar also to some species in the myosotidis and flavescens groups, but penis valves can in most cases be more reliably distinguished from the species in the other Euura groups. Based on the similar type of saws (with short, tooth-like setae) and small subapical claw tooth, E. annulata, E. gehrsi, E. infirma, and E. taegeri can be distinguished reliably from species in the other groups of Euura, and also from the remainder in the E. bipartita group. Euura albipennis, E. caucasica, E. excisa, and E. punctifrons also have a small subapical claw tooth. Euura fuscodorsata, E. perkioemaekii and E. uda have a small or large subapical tooth, but not clearly bifid as in most other species of E. bipartita group. Some other species (especially males) can have a rather small subapical tooth, like E. scotonota and males of E. bipartita and E. poppii. Euura fuscarima females are the palest in the group (usually nearly completely pale like E. flavescens). Females and males of E. albipennis and southern populations of E. bipartita typically have rather dark thorax and extensively yellowish abdomen, a colour combination that is rather unusual in Euura. Euura monticola is very similar to E. bipartita, but its antennae seem to be shorter and the abdomen is usually darker than in southern E. bipartita. Extensively pale are also E. connecta, E. leionota, E. lipovskyi, E. mimus, many specimens of E. poppii, and males of E. annulata, E. fuscarima, and E. fuscodorsata. Penis valves of some species in the group are rather distinctive, like those of E. acuminalis, E. infirma, E. uda, E. scotonota and E. declinata (the latter two are quite similar to each other). In most cases, a combination of colouration, claw, sawsheath, penis valve and saw characters enable separation of the species, but in some cases the differences are small or one of the sexes is not clearly identifiable. In many cases, the genetic data (mainly nuclear) separate the species more clearly.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF5D83F9720FE8BFD76F917.taxon	description	Fig. 335	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF5D83F9720FE8BFD76F917.taxon	diagnosis	Diagnosis Only the two type specimens were available for study. The holotype male (4.7 mm) is rather pale and has a relatively distinctive penis valve that cannot be associated with any other species of Euura. The studied female paratype is more or less the same colour, but conspecificity with the male is uncertain. Holotype male ventrally pale (also antenna slightly); dorsally black, except last 2 – 3 terga (6 th slightly); head extensively pale around eyes; hind tibia nearly completely pale; hind tarsi mostly black or brown; pterostigma yellow or brown; claws bifid; projection of tergite 8 longer than broad, rather distinct; antenna long. The female is externally most similar to that of striatipleuris (synonymised here with E. fuscarima), particularly paratypes GL. 3547 and GL. 3548, but saw may be more similar to that of E. poppii which may also have similar colouration. Placement in the bipartita group is uncertain.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF5D83F9720FE8BFD76F917.taxon	materials_examined	Type material examined Holotype Pteronidea acuminata SWEDEN – Torne Lappmark • ♂; Torneträsk; 68.22 ° N, 19.74 ° E; 400 m a. s. l.; R. Malaise leg.; NHRS, NHRS-HEVA 000003990. Paratype Pteronidea acuminata SWEDEN – Torne Lappmark • 1 ♀; same data as for holotype; NHRS, NHRS-HEVA 000003991.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF5D83F9720FE8BFD76F917.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF5D83F9720FE8BFD76F917.taxon	description	Genetics COI No data. Nuclear No data.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF5D83F9720FE8BFD76F917.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF5D83D972EF922FB8DFED9.taxon	description	Figs 97, 336	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF5D83D972EF922FB8DFED9.taxon	diagnosis	Diagnosis Abdomen completely or nearly completely (usually?) pale, pterostigma and costa pale, head and thorax from mostly black to extensively pale, claws with small subapical tooth, valvula 3 elongate, gradually tapering. Most similar species is E. bipartita (character states in parentheses), from which it differs by having pale costa (brown or black), usually smaller subapical tooth (usually bifid at least in female), mesoscutellum usually higher than lateral mesoscutal lobes (at same level as lateral mesoscutal lobes), usually uniformly black antenna (ventrally at least slightly pale), usually mostly black head and mesepisternum (extensively pale), and slightly less protruding serrulae. The lectotype designation for N. albipennis by Haris (1997: 118) is not valid, because a specimen from the Zoologische Staatssammlung Munich was selected, whereas Hartig (1837: 196) indicated “ Mus. Kl. ” (= Museum Klug = ZMHB collection) for the deposition of original material.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF5D83D972EF922FB8DFED9.taxon	materials_examined	Type material examined Lectotype Nematus albipennis, here designated GERMANY [according to the title of Hartig 1837] • ♂; ZMHUB, GBIF-GISHym 2773. Lectotype Nematus vernalis GERMANY • ♀; northern Germany [according to Hartig 1840: 22]; ZSM, DEI-GISHym 3455. Neotype Pachynematus legirupus GERMANY – Mecklenburg-Vorpommern • ♀; Hiddensee, NSG Schwedenhau; 54.54 ° N, 13.09 ° E; SDEI, GBIF-GISHym 4695. Lectotype Pachynematus sannio, here designated RUSSIA – Irkutskaja oblast • ♀; Irkutsk; 52.29 ° N, 104.24 ° E; SDEI, GBIF-GISHym 3871. Paralectotype Pachynematus sannio RUSSIA – Irkutskaja oblast • 1 ♂; same data as for lectotype; SDEI, GBIF-GISHym 3870.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF5D83D972EF922FB8DFED9.taxon	biology_ecology	Host plants Persicaria maculosa Gray (Stein 1885; Macek et al. 2020). Two generations in central Europe (Stein 1885).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF5D83D972EF922FB8DFED9.taxon	description	Genetics COI Only one sequence available. The nearest neighbour, diverging by a minimum of 1.67 %, is Euura monticola. Nuclear Only one sequence available. The nearest neighbour, diverging by a minimum of 1.18 %, is Euura fuscomaculata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF5D83D972EF922FB8DFED9.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Germany, and Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF7D8229737FE90FD0AFD27.taxon	description	Figs 103, 337	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF7D8229737FE90FD0AFD27.taxon	diagnosis	Diagnosis Female Mostly black to extensively pale, head (always?) extensively pale around eyes, pterostigma pale, claws with small subapical tooth, valvula 3 short and gradually tapering. Lancet has 11 – 12 annuli, with teethlike setae, and basal 2 – 3 annuli without serrulae. Male (differences from female) Extensively to mostly pale. Most similar species is E. gehrsi, from which it usually differs by its larger size and paler colouration. Paravalva of E. annulata is possibly more abruptly narrowed basally compared to E. gehrsi. An externally very similar species is also E. taegeri (character states in parentheses), from which it differs by having lancet with about 11 annuli (about 15 annuli), basal 2 – 3 annuli without serrulae (all annuli with serrulae), convex ventroapical margin of lancet (straight or concave), and slender valvispina. Another similar species is E. infirma, from which it differs in its larger size, paler colouration, broader valvula 3, basal 2 – 3 annuli without serrulae (all annuli with serrulae), convex ventroapical margin of lancet (straight or concave), and pseudoceps without apical filament (with filament).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF7D8229737FE90FD0AFD27.taxon	materials_examined	Type material examined Lectotype Nematus leucocarpus, here designated SWITZERLAND • ♀; Alpes du Valais; Desbrochers leg.; ZIN, DEI-GISHym 89375. Holotype Pachynematus lacteipennis AUSTRIA – Lower Austria • ♀; Semmeringgebiet, Raxalp; 47.70 ° N, 15.74 ° E; 1830 m a. s. l.; 3 Jun. 1957; R. B. Benson leg.; BMNH, B. M. TYPEHYM. 1.789.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF7D8229737FE90FD0AFD27.taxon	biology_ecology	Host plants Rumex spp. (Nyman et al. 2006; Macek et al. 2020). There can be up to two generations per year in central Europe (Weiffenbach 1985 [under the name Pachynematus rumicis]).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF7D8229737FE90FD0AFD27.taxon	description	Genetics COI Based on 7 specimens, maximum within-species distance is 3.96 % and the nearest neighbour, diverging by a minimum of 0.61 %, is Euura gehrsi. Nuclear Based on 2 specimens, maximum within-species distance is 0.61 %. The nearest neighbour, diverging by a minimum of 0.5 %, is Euura gehrsi.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFF7D8229737FE90FD0AFD27.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Austria, Finland, Germany, Iceland, Norway, Sweden, Switzerland, and the United Kingdom.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE8D8209753FD34FE47FC84.taxon	description	Figs 98 – 100, 341 – 343	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE8D8209753FD34FE47FC84.taxon	diagnosis	Diagnosis In southern Fennoscandia and central Europe, E. bipartita is extensively pale (completely or nearly completely pale abdomen and often also extensively pale thorax), but based on nuclear sequencing, specimens are (usually?) much darker (thorax black and abdomen from extensively pale ventrally to nearly completely black) in northern Fennoscandia. The holotypes of stramineipes and rutilipes fit well (externally and saws) with the dark form of E. bipartita. Specimens with intermediate colouration might not always be distinguishable from E. monticola. Head black or pale around eyes; labrum pale; clypeus black or pale; supraclypeal area black or pale; flagellum black or pale; thorax black or with pale markings laterally and dorsally; tegula and pronotum posteriorly pale; pterostigma pale; metafemur and metatibia pale; hind tarsus pale or brown; abdomen nearly completely black to completely pale; claws bifid in female, bifid or with small to large subapical tooth in male; valvula 3 elongate, gradually tapering; lancet with (14?) 15 – 17 (18?) serrulae. The most similar species are E. monticola and E. perkioemaekii. Male and female specimens of E. bipartita with a completely or nearly completely pale abdomen (usually?) also have at least a partly pale mesepisternum and partly pale antennae, while E. monticola usually has a black mesepisternum, black antennae and extensively black abdominal terga 1 – 2. The antennae of E. monticola (as long as costa or up to half of pterostigma in female) may also be shorter than in E. bipartita (usually longer than costa and half of pterostigma in female and male). Females of E. bipartita differ from E. perkioemaekii by having a longer subapical tooth of claw and possibly more prominent serrulae. Darker males of E. bipartita may not be always separable from E. perkioemaekii. Pale specimens of E. bipartita are also similar to E. albipennis (character states in parentheses), from which it usually differs by having bifid claws (usually with small subapical tooth), mesoscutellum at same level as lateral mesoscutal lobes (usually higher than lateral mesoscutal lobes), protibial spur with velum (without velum), ventrally at least slightly pale antenna (usually uniformly black), extensively pale head and mesepisternum (usually mostly black), and slightly more protruding serrulae.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE8D8209753FD34FE47FC84.taxon	materials_examined	Type material examined Lectotype Nematus aurantiacus, here designated GERMANY • ♀; ZSM, GBIF-GISHym 3087. Paralectotype Nematus aurantiacus GERMANY • 1 ♀; ZSM, GBIF-GISHym 3206. Lectotype Nematus confusus, here designated GERMANY – Nordrhein-Westfalen • ♀; Aachen area; 50.77 ° N, 6.09 ° E; A. Förster leg.; ZSM, GBIFGISHym 3229. Lectotype Nematus xanthogaster, here designated GERMANY – Nordrhein-Westfalen • ♂; Aachen area; 50.77 ° N, 6.09 ° E; A. Förster leg.; ZSM, GBIFGISHym 3459. Holotype Nematus ochropus SWEDEN • ♀; Dalarna; NHRS, NHRS-HEVA 000003994. Lectotype Pachynematus albipennis var. salicicola GERMANY – Brandenburg • ♀; Fürstenwalde; 52.37 ° N, 14.06 ° E; 1 – 31 May 1912; S. Soldanski leg.; SDEI, DEI-GISHym 5034. Holotype Pteronidea fulviventris FINLAND – Kainuu • ♀; Suomussalmi, Ruhtinansalmi; 65.15 ° N, 29.35 ° E; 21 Jul. 1917; O. Sorsakoski leg.; ZMUT, http: // mus. utu. fi / ZMUT. TYPE 765. Note 14 serrulae. Lancet most similar to the holotype of Pteronidea stramineipes, but with fewer serrulae (16 in stramineipes). Antennae seem to be of the same length as in E. monticola, but mesepisternum and antennae are partly pale, and the lancet has distinctly fewer serrulae than E. monticola. Mesepisternum slightly matt. Holotype Pteronidea stramineipes FINLAND – Lapin Lääni • ♀; Kilpisjärvi; 69.04 ° N, 20.81 ° E; 7 Jul. 1953; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 3511. Note The best morphological match is ZMUO. 041906. Holotype Pteronidea rutilipes FINLAND – Lapin Lääni • ♀; Kilpisjärvi; 69.04 ° N, 20.81 ° E; 12 Jul. 1950; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 3590. Note The best morphological match is ZMUO. 041906.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE8D8209753FD34FE47FC84.taxon	biology_ecology	Hosts plants Salix spp.; according to Enslin (1911 b) also Populus.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE8D8209753FD34FE47FC84.taxon	description	Genetics COI Based on 10 specimens, maximum within-species distance is 3.5 % and the nearest neighbour, diverging by a minimum of 0 %, is Euura monticola. Nuclear Based on 10 specimens, maximum within-species distance is 0.87 % (0.61 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.21 %, is Euura perkioemaekii.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE8D8209753FD34FE47FC84.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Belgium, Bulgaria, Czech Republic, Estonia, Finland, France, Germany, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEAD82194CFFCD3FD79FED8.taxon	description	Figs 108, 346	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEAD82194CFFCD3FD79FED8.taxon	diagnosis	Diagnosis The holotype female is externally similar to darker specimens in the bipartita group (e. g., E. bipartita) and flavescens group (e. g., E. lienterica), but the serrulae of the saw are rather protruding and almost papilliform in E. caucasica compared to more triangular or flat in the bipartita and flavescens groups. The penis valves of the paratype (which may or may not be conspecific with the holotype) are not clearly distinguishable from E. fuscomaculata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEAD82194CFFCD3FD79FED8.taxon	materials_examined	Type material examined Holotype Pachynematus alticola RUSSIA – Elbrus Region • ♀; Terskol, Südosthang; 43.26 ° N, 42.53 ° E; 2500 – 2800 m a. s. l.; 8 Jul. 1971; W. H. Muche leg.; ZMHB, DEI-GISHym 81560. Paratype Pachynematus alticola RUSSIA – Elbrus Region • 1 ♂; Itkol; 43.25 ° N, 42.54 ° E; 2100 – 2300 m a. s. l.; 27 Jun. – 6 Jul. 1967; W. H. Muche leg.; ZMHB, DEI-GISHym 12542.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEAD82194CFFCD3FD79FED8.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEAD82194CFFCD3FD79FED8.taxon	description	Genetics COI No data. Nuclear No data.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEAD82194CFFCD3FD79FED8.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEBD8269725FE9FFEBDFC43.taxon	description	Figs 109, 350	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEBD8269725FE9FFEBDFC43.taxon	diagnosis	Diagnosis Morphologically not clearly distinguishable from E. leucopyga, except for colouration. Overall, E. connecta females are paler (e. g., mesepisternum extensively pale) than E. leucopyga (mesepisternum black). Males are also paler (metafemur and sterna completely pale) than E. leucopyga (metafemur often black at base, sterna at least partly black). The species are genetically also close, but at least based on the sampled specimens (n = 6), E. connecta nuclear haplotypes are quite distinct from E. leucopyga. Nevertheless, it cannot be excluded that E. connecta is a southern pale form of E. leucopyga. Another very similar species is E. leionota, which seems to have a somewhat different saw: generally with 19 – 23 serrulae (17 – 19 in E. connecta) and slightly convex ventral margin of lamnium (straight or slightly concave in E. connecta). Female Head extensively pale around eyes; labrum, clypeus and supraclypeal area pale; flagellum black or pale ventrally; thorax dorsally black to nearly completely pale, laterally extensively to nearly completely pale; pronotum and tegula pale; pterostigma pale; metafemur and metatibia pale; hind tarsus pale or brown; abdomen dorsally mostly black, ventrally completely or nearly completely pale; mesepisternum smooth; claws bifid; valvula 3 in dorsal view apically blunt or acute.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEBD8269725FE9FFEBDFC43.taxon	materials_examined	Type material examined Holotype Pteronidea connecta SWITZERLAND – Valais • ♀; Zernez; 46.70 ° N, 10.10 ° E; 1400 m a. s. l.; 16 – 18 Jun. 1953; H. Lindberg leg.; MZH, http: // id. luomus. fi / GL. 9223. Notes 19 serrulae; 7.3 mm. Best morphological match, but smaller: DEI-GISHym 83923 (17 – 18 serrulae; 6.2 mm). Holotype Pteronidea nitida FINLAND – Inari • ♀; Ivalo; 68.65 ° N, 27.55 ° E; V. Karvonen leg.; 4 Jul. 1965; MZH, http: // id. luomus. fi / GL. 9218. Notes 17 serrulae; 6.5 mm. Best morphological match: DEI-GISHym 83923. Holotype Pteronidea polita FINLAND – Vihti • ♀; Siikajärvi; 60.29 ° N, 24.52 ° E; V. Karvonen leg.; 10 Jun. 1973; MZH, http: // id. luomus. fi / GL. 3513. Notes Best morphological match: DEI-GISHym 4985.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEBD8269725FE9FFEBDFC43.taxon	biology_ecology	Hosts plants Salix pentandra and possibly other Salix spp. According to Macek et al. (2020) the host is Betula, but this may be due to misidentification of the very similar E. leionota, which feeds on Betula. We note that, based on sequencing of one larva, E. leionota is present in Slovakia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEBD8269725FE9FFEBDFC43.taxon	description	Genetics COI Based on 8 specimens, maximum within-species distance is 0.15 % and the nearest neighbours, diverging by a minimum of 0.15 %, are Euura leucopyga, E. parviserrata, and E. sordidiapex. Nuclear Based on 6 specimens, maximum within-species distance is 0.31 % (0.27 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.25 %, is Euura leucopyga.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEBD8269725FE9FFEBDFC43.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Estonia, Finland, Germany, Switzerland, and the United Kingdom.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFECD8279752FC17FBEEFCD8.taxon	description	Figs 115, 366, 367	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFECD8279752FC17FBEEFCD8.taxon	diagnosis	Diagnosis Mostly black, pterostigma pale, claws with a large subapical tooth clearly separated from apical one, or bifid, mesepisternum smooth, valvula 3 elongate, thin and gradually tapering. The most similar species is E. scotonota (character states in parentheses), from which it differs possibly by mostly black sterna (pale). Closely related is also E. excisa (claws with small subapical tooth, mesepisternum matt).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFECD8279752FC17FBEEFCD8.taxon	materials_examined	Type material examined Lectotype Nematus declinatus GERMANY – Nordrhein-Westfalen • ♂; Aachen area; 50.77 ° N, 6.09 ° E; A. Förster leg.; ZSM, GBIFGISHym 3260. Lectotype Pteronus capito GERMANY – Sachsen • ♀; SDEI, GBIF-GISHym 3878. Notes The synonymy of Pteronus capito with Nematus declinatus Förster by Taeger & Blank (1998) is here accepted. The projection of tergite 8 of the type specimen of declinatus does not fit Euura clitellata or E. fallax (which was considered within the range of variability of Pachynematus fallax by Liston & Burger, 2009). Genitalia of the type specimen are unfortunately lost (Liston & Burger 2009), but the drawing by Conde (who studied the type specimen) in an unpublished manuscript on Nematinae fits best with the specimen DEI-GISHym 17598 (Figs 366 – 367) that we consider to be conspecific with females described by Konow as Pteronus capito. The penis valve is similar to that of the closely related E. scotonota.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFECD8279752FC17FBEEFCD8.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFECD8279752FC17FBEEFCD8.taxon	description	Genetics COI Based on 2 specimens, maximum within-species distance is 0.16 % and the nearest neighbour, diverging by a minimum of 1.29 %, is Euura scotonota. Nuclear Only one sequence available, a female with haplotypes diverging by 0 %. The nearest neighbour, diverging by a minimum of 0.89 %, is Euura excisa.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFECD8279752FC17FBEEFCD8.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Czech Republic, France, and Germany.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEDD8249756FC90FAB9FE5D.taxon	description	Fig. 116	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEDD8249756FC90FAB9FE5D.taxon	diagnosis	Diagnosis Mostly black, labrum and partly clypeus pale; head behind eyes sometimes pale; tegula pale; pterostigma pale; valvifer 2, hypopygium posteriorly, tergum 9 partly, and tergum 10 pale; metafemur apically pale; metatibia pale; hind tarsus pale or brown; claws with small subapical tooth, mesepisternum (usually?) matt, valvula 3 in dorsal view elongate, thin and gradually tapering. Most closely related species are E. declinata and E. scotonota (character states in parentheses), from which it differs by having claws with small subapical tooth (usually bifid or with large subapical tooth) and matt mesepisternum (smooth). Additional characters like its mostly black body, pale pterostigma and tibiae enable it to be separated from all other species of Euura relatively easily. Male unknown, but penis valve could be similar to the closely related E. declinata and E. scotonota.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEDD8249756FC90FAB9FE5D.taxon	materials_examined	Type material examined Lectotype Nematus excisus, here designated SWEDEN • ♀; Norlandia [Lapland, probably Sweden]; C. H. Boheman leg.; MZLU, MZLU 2017274. Lectotype Lygaeonematus strandi, here designated NORWAY – Nordland • ♀; Hadsel; 68.5 ° N, 15.0 ° E; E. Strand leg.; SDEI, GBIF-GISHym 3880.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEDD8249756FC90FAB9FE5D.taxon	biology_ecology	Host plants Bistorta vivipara (L.) Delarbre.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEDD8249756FC90FAB9FE5D.taxon	description	Genetics COI Based on 5 specimens, maximum within-species distance is 1.41 % and the nearest neighbour, diverging by a minimum of 1.22 %, is Euura fuscomaculata. Nuclear Based on 5 specimens, maximum within-species distance is 0.15 % (0.34 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.71 %, is Euura scotonota.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEDD8249756FC90FAB9FE5D.taxon	distribution	Distribution and material examined Holarctic. Specimens studied are from Finland, Greenland (only genetics), Norway, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEED82594E6FE1CFBD7FBF6.taxon	description	Figs 123 – 124, 349	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEED82594E6FE1CFBD7FBF6.taxon	diagnosis	Diagnosis Females are typically almost completely yellow, resembling E. flavescens, that is externally hardly distinguishable. The serrulae of E. flavescens protrude less than in E. fuscarima. In addition, the dorsobasal part next to the suture of basalmost annulus of the saw of E. flavescens has a dorsally widening pale area that is absent in E. fuscarima. Even more similar to E. fuscarima could be E. seriepunctata (also flavescens group), which seems also to have less protruding serrulae than E. fuscarima. The only males we have studied are paratypes of E. fuscarima that were reared together with the females. Males are generally significantly darker dorsally than females. Penis valves are most similar to E. taegeri and clearly distinguishable from the flavescens group penis valves. Although not identical, one sequenced darker specimen (ZMUO. 035621) of fuscarima from Utsjoki (northern Finland) clearly groups with the typical fuscarima from the south based on nuclear genes. The ZMUO. 035621 specimen matches well (saw and colouration) with the holotypes of striatipleuris and epimeris from northern Finland. These darker specimens from the North are dorsally extensively black and the thorax can be slightly black also laterally. Considering the generally large colour variability in many species of Euura and close genetic similarity of ZMUO. 035621 to typical fuscarima, we treat striatipleuris and epimeris as synonyms of fuscarima. Based on its penis valve, the paratype of epimeris (http: // id. luomus. fi / GL. 3495) may belong to E. fuscodorsata (ZMUO. 035607). The study of the saw of the lectotype of Nematus testaceus Thomson (primary homonym of Nematus testaceus Stephens) revealed it to belong to E. flavescens, which also means that the replacement name previously used for fuscarima, Pteronidea stichi Enslin, 1913 is a synonym of E. flavescens and therefore not available for fuscarima.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEED82594E6FE1CFBD7FBF6.taxon	materials_examined	Type material examined Holotype Pteronidea fuscarima IRELAND – Wicklow • ♀; Devil’s Glen; 53.02 ° N, 6.15 ° W; larvae collected Oct. 1927, emerged May 1928; A. W. Stelfox leg.; larvae on Salix; BMNH, B. M. TYPEHYM. 1.632. Holotype Pteronidea striatipleuris FINLAND – Lapin Lääni • ♀; Kilpisjärvi; 69.04 ° N, 20.81 ° E; 6 Jul. 1953; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 3551. Notes 18 serrulae. Best morphological match: ZMUO. 035621 (17 – 18 serrulae). Holotype Pteronidea epimeris FINLAND – Lapin Lääni • ♀; Kilpisjärvi; 69.04 ° N, 20.81 ° E; 7 Jul. 1966; V. Karvonen leg.; MZH, http: // id. luomus. fi / GL. 3494. Notes 17 serrulae. Holotype Pteronidea peltoneni FINLAND – Uusimaa • ♀; Helsinki, Herttoniemi; 60.20 ° N, 25.04 ° E; larvae collected 1 Sep. 1964, adult emerged 30 Sep. 1964; E. Peltonen leg.; host Salix phylicifolia; MZH, http: // id. luomus. fi / GL. 3517.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEED82594E6FE1CFBD7FBF6.taxon	biology_ecology	Host plants Salix spp. Two generations (Benson 1933).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEED82594E6FE1CFBD7FBF6.taxon	description	Genetics COI Based on 5 specimens, maximum within-species distance is 4.43 % and the nearest neighbour, diverging by a minimum of 0 %, is Euura polaris. Nuclear Based on 3 specimens, maximum within-species distance is 0.78 % (0.25 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 1.02 %, is Euura polaris.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEED82594E6FE1CFBD7FBF6.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Austria, Finland, Ireland, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEFD82A94CBFB41FC11FC71.taxon	description	Figs 118, 362	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEFD82A94CBFB41FC11FC71.taxon	diagnosis	Diagnosis Externally most similar to E. poppii and E. fuscomaculata, but the saw fits best with E. scotonota, which has 16 – 17 serrulae (12 – 15 (?) in E. fuscodorsata) and largely black head (pale around eyes and pale supraclypeal area in E. fuscodorsata). The claws of E. fuscodorsata are not clearly bifid as in most other Euura (including E. poppii and E. fuscomaculata) but have a small or large subapical tooth. We have studied only three females. Characteristic for the species may be pale sterna in combination with black downturned parts of abdominal terga, although this colour pattern does occasionally occur in some other species as well, like E. poppii and E. fuscomaculata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEFD82A94CBFB41FC11FC71.taxon	materials_examined	Type material examined Holotype Pteronidea fuscodorsata FINLAND – Inari • ♀; Ivalo; 68.65 ° N, 27.55 ° E; H. Lindberg leg.; 29 May 1929; MZH, http: // id. luomus. fi / GL. 3542. Notes 15 serrulae? Holotype Pachynematus albiventris NORWAY – Finnmark • ♀; Tana Bru; 70.20 ° N, 28.17 ° E; H. Andersson leg.; 8 Jul. 1956; MZLU, MZLU-HYM 0031489. Notes 12 – 13 serrulae.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEFD82A94CBFB41FC11FC71.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEFD82A94CBFB41FC11FC71.taxon	description	Genetics COI Based on 2 specimens, maximum within-species distance is 2.13 % and the nearest neighbour, diverging by a minimum of 2.74 %, is Euura monticola. Nuclear Based on 2 specimens, maximum within-species distance is 0.01 % (0.01 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 1.29 %, is Euura bipartita.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFEFD82A94CBFB41FC11FC71.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, and Norway.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE0D8289733FBF9FEABFEFC.taxon	description	Figs 126, 347, 348	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE0D8289733FBF9FEABFEFC.taxon	diagnosis	Diagnosis Based on its COI barcode sequence (closest to E. fuscomaculata ZMUO. 040288 and DEI-GISHym 31250) and morphology of the holotype of winteri, we have synonymized it with E. fuscomaculata. The holotype of carelicus is almost destroyed, but Viitasaari & Vikberg (1985) considered it to be conspecific with winteri and therefore we treat it also as synonym of E. fuscomaculata. In addition, the original description of carelicus seems to fall within the variability of E. fuscomaculata. The male paratype http: // id. luomus. fi / GL. 3467 also fits well with E. fuscomaculata. Based on nuclear genes, E. fuscomaculata can be divided into two or three clusters, composed of southern and northern specimens, but these are morphologically not clearly distinguishable. At least some of the northern specimens must have fed on Salix instead of Populus (absent in most of the localities where they have been collected).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE0D8289733FBF9FEABFEFC.taxon	description	Female Head extensively or slightly pale around eyes (inner orbits continuously pale and outer orbits pale only dorsally or both inner and outer orbits pale only dorsally); labrum and clypeus pale; supraclypeal area slightly or extensively pale; thorax black (rarely slightly pale like DEI-GISHym 13870 or extensively pale like the lectotype of dossuarius Konow?); pronotum and tegula pale; pterostigma pale; metafemur pale; metatibia pale with black apex; hind tarsus black or brown; abdomen dorsally nearly completely black, ventrally extensively pale; mesepisternum smooth; lancet with (16?) 17 – 18 serrulae; antennae usually as long as costa and pterostigma. Male Head extensively pale around eyes to nearly completely black; labrum and clypeus pale; supraclypeal area black (usually?); thorax black; pronotum and tegula extensively pale; pterostigma pale; metafemur pale; metatibia pale with black apex; hind tarsus black or brown; abdomen dorsally nearly completely black, ventrally mostly black to extensively pale; sternum 9 pale; antennae not reaching beyond apex of pterostigma.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE0D8289733FBF9FEABFEFC.taxon	materials_examined	Type material examined Lectotype Nematus fuscomaculatus, here designated GERMANY – Nordrhein-Westfalen • ♀; Aachen area; 50.77 ° N, 6.09 ° E; ZSM, GBIF-GISHym 3287. Lectotype Pteronus dossuarius, here designated RUSSIA – Yakutia • ♀; Ust‘ - Vilyuyskiy Khrebet; 64.48 ° N, 126.31 ° E; B. Poppius leg.; SDEI, GBIFGISHym 3852. Holotype Nematus (Pteronidea) carelicus RUSSIA – Karelia • ♀; Petrosavodsk; 61.78 ° N, 34.32 ° E; 1 Jun. 1943; W. Hellén leg.; MZH, http: // id. luomus. fi / GL. 3501. Notes The holotype is almost destroyed: only three wings, two legs and about a third of the sclerites of the thorax remain. Holotype Pteronidea winteri FINLAND – Uusimaa • ♀; Helsinki, Munksnäs [Munkkiniemi]; 60.22 ° N, 24.89 ° E; 19 Jun. 1955; O. Winter leg.; MZH, http: // id. luomus. fi / GL. 3468. Notes The nearly complete lancets on the card pinned with the specimen must belong to another specimen, because the holotype still has half of its saw. Saw on the card has 15 – 16 serrulae, and is indistinguishable from the holotype of Pteronidea stramineipes.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE0D8289733FBF9FEABFEFC.taxon	biology_ecology	Host plants Populus tremula L., but possibly also Salix spp. in the North if specimens from there are conspecific.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE0D8289733FBF9FEABFEFC.taxon	description	Genetics COI Based on 19 specimens, maximum within-species distance is 2.43 % and the nearest neighbour, diverging by a minimum of 1.06 %, is Euura monticola. Nuclear Based on 13 specimens, maximum within-species distance is 1.24 % (0.65 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.53 %, is Euura parviserrata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE0D8289733FBF9FEABFEFC.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Austria, Estonia, Finland, Germany, Norway, Russia, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE2D828972EFE7AFD75F994.taxon	description	Fig. 125	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE2D828972EFE7AFD75F994.taxon	diagnosis	Diagnosis The female holotype is mostly black and externally most similar to species in the bipartita and flavescens groups. The lancet (17 serrulae) is most similar to E. bipartita, E. fuscarima, and E. lienterica, but does not clearly fit these species (E. fuscarima is also significantly paler, and usually the other two species are as well): sutures of middle annuli somewhat S-shaped as in E. lienterica (more or less straight or arcshaped in E. fuscarima and E. bipartita), but setae are significantly longer than in at least E. lienterica. The serrulae of E. fuscula seem to be most similar to E. fuscarima. In the absence of genetic data it is difficult to say whether E. fuscula could be a synonym of an existing species or is distinct. The male paratype http: // id. luomus. fi / GL. 3565 belongs to the E. flavescens group (species uncertain).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE2D828972EFE7AFD75F994.taxon	materials_examined	Type material examined Holotype Pteronidea fuscula FINLAND – Lapin Lääni • ♀; Kilpisjärvi; 69.04 ° N, 20.81 ° E; 10 Jul. 1950; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 3566.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE2D828972EFE7AFD75F994.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE2D828972EFE7AFD75F994.taxon	description	Genetics COI No data. Nuclear No data.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE2D828972EFE7AFD75F994.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE2D8299745F9A4FAB0FBDE.taxon	description	Figs 104, 338	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE2D8299745F9A4FAB0FBDE.taxon	diagnosis	Diagnosis Most similar to E. annulata but generally darker. Serrulae and setae of the saw of E. annulata may be more prominent than in E. gehrsi. Males are more clearly distinguishable because of large differences in colouration (E. annulata males are extensively pale while E. gehrsi is mostly black). Also, the paravalva of the penis valve of E. annulata possibly narrows basally more abruptly compared to E. gehrsi.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE2D8299745F9A4FAB0FBDE.taxon	materials_examined	Type material examined Lectotype Pachynematus gehrsi GERMANY – Thüringen • ♀; Ohrdruf; 50.81 ° N, 10.74 ° E; 9 Jun. 1890; A. Frank leg.; SDEI, DEIGISHym 12498. Lectotype Pachynematus freyi, here designated FINLAND – Inari Lapland • ♀; Utsjoki, Outakoski; 69.61 ° N, 25.98 ° E; 25 Jun. 1947; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 2448.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE2D8299745F9A4FAB0FBDE.taxon	biology_ecology	Host plants Bistorta officinalis Delarbre (Macek et al. 2020; rearings by Alexey Zinovjev) and probably also Bistorta vivipara, because B. officinalis is not present in northern Fennoscandia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE2D8299745F9A4FAB0FBDE.taxon	description	Genetics COI Based on 5 specimens, maximum within-species distance is 3.5 % and the nearest neighbour, diverging by a minimum of 0.61 %, is Euura annulata. Nuclear Based on 5 specimens, maximum within-species distance is 0.61 % (0.47 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.5 %, is Euura annulata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE2D8299745F9A4FAB0FBDE.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, France, Germany, Norway, Russia, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE3D82E975FFB99FBDAFC01.taxon	description	Figs 105, 339	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE3D82E975FFB99FBDAFC01.taxon	diagnosis	Diagnosis The females are most similar to E. gehrsi, E. annulata, and E. oehlkei, but can be distinguished based on lancets which are ventrally concave and have serrulae present also on basal-most annuli (ventrally slightly convex in E. gehrsi and E. annulata and basal 2 – 3 annuli without serrulae in E. gehrsi, E. annulata, and E. oehlkei). Valvula 3 is also narrower in dorsal view than in E. gehrsi, E. annulata, and perhaps E. oehlkei. Male penis valves are clearly distinguishable from the other Euura. Pseudoceps of the penis valve is apically filament-like, which is otherwise only seen in a few species of Euura that have bifid claws (small subapical tooth in E. infirma). Female 3.7 – 3.9 mm. Head slightly to extensively pale around eyes; labrum, clypeus, and supraclypeal area pale; thorax black; pronotum black or posteriorly slightly pale; tegula pale; pterostigma pale; metafemur extensively pale; metatibia pale; hind tarsus black; abdomen black; valvifer 2 pale; valvula 3 black or brown, in dorsal view narrow and with acute apex.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE3D82E975FFB99FBDAFC01.taxon	materials_examined	Type material examined Lectotype Nematus infirmus GERMANY – Nordrhein-Westfalen • ♂; Aachen area; 50.77 ° N, 6.09 ° E; ZSM, GBIF-GISHym 3303. Lectotype Nematus subaequalis GERMANY – Nordrhein-Westfalen • ♀; Aachen area; 50.77 ° N, 6.09 ° E; ZSM, GBIF-GISHym 3445.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE3D82E975FFB99FBDAFC01.taxon	biology_ecology	Host plants Bistorta officinalis (Macek et al. 2020; rearings by Alexey Zinovjev).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE3D82E975FFB99FBDAFC01.taxon	description	Genetics COI Based on 3 specimens, maximum within-species distance is 0.46 % and the nearest neighbours, diverging by a minimum of 4.86 %, are Euura polaris and E. poppii. Nuclear Based on 2 specimens, maximum within-species distance is 0 % (0.33 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.92 %, is Euura gehrsi.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE3D82E975FFB99FBDAFC01.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from France, Germany, Italy, and Russia. Euura infirma should be removed from the Finnish list, because the records probably refer to E. gehrsi.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE4D82F9756FC48FAFEF927.taxon	description	Fig. 112	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE4D82F9756FC48FAFEF927.taxon	diagnosis	Diagnosis Most similar to E. connecta: see differences mentioned under that species. Female 5.0 – 7.0 mm. Head extensively to mostly pale; labrum, clypeus and supraclypeal area pale; flagellum black or ventrally pale; thorax dorsally extensively pale (sometimes black?), ventrally extensively or nearly completely pale; pterostigma uniformly pale, brown, or with dark margins; abdomen dorsally mostly black, ventrally completely pale; metafemur and metatibia pale; hind tarsus pale or brown; mesepisternum smooth; claws bifid; valvula 3 in dorsal view with blunt tip. Male Not known for certain.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE4D82F9756FC48FAFEF927.taxon	materials_examined	Type material examined Holotype Pteronidea leionota UNITED KINGDOM – England • ♀; Devon, Great Haldons; 50.63 ° N, 3.57 ° W; Apr. 1926; R. C. L. Perkins leg.; BMNH, B. M. TYPEHYM. 1.634. Notes 22 serrulae. Holotype Pteronidea microserrata FINLAND – Uusimaa • ♀; Kirkkonummi; 60.126 ° N, 24.439 ° E; R. Frey leg.; MZH, http: // id. luomus. fi / GL. 9221. Notes 21 serrulae. Holotype Pteronidea nigrita SWEDEN – Torne Lappmark • ♀; Abisko; 68.35 ° N, 18.83 ° E; 25 – 30 Jun. 1954; J. E. and R. B. Benson leg.; BMNH, B. M. TYPEHYM. 1.784. Notes 20 – 21 serrulae; 6 mm. Holotype Pteronidea clavicercus FINLAND – Häme • ♀; Pirkkala; 61.466 ° N, 23.642 ° E; 13 Jun. 1935; T. Grönblom leg.; MZH, PR. 558 VV. Notes 21 serrulae. Best morphological match: DEI-GISHym 12042 (22 serrulae). Holotype Pteronidea verticalis FINLAND – Satakunta • ♀; Björneborg [Pori]; 61.49 ° N, 21.81 ° E; 17 May 1935; E. Lindqvist leg.; MZH, PR. 557 VV. Notes 23 serrulae. Best morphological match: DEI-GISHym 12042 (22 serrulae).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE4D82F9756FC48FAFEF927.taxon	biology_ecology	Host plants Betula pendula Roth and B. pubescens.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE4D82F9756FC48FAFEF927.taxon	description	Genetics COI Based on 7 specimens, maximum within-species distance is 0.31 % and the nearest neighbour, diverging by a minimum of 1.37 %, is Euura sordidiapex. Nuclear Based on 6 specimens, maximum within-species distance is 0.16 % (0.14 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.31 %, is Euura leucopyga.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE4D82F9756FC48FAFEF927.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Norway, Slovakia, Sweden, and the United Kingdom.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE5D82D9737F933FB8DF9FA.taxon	description	Figs 131, 352 – 353	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE5D82D9737F933FB8DF9FA.taxon	diagnosis	Diagnosis Most similar are E. leucopyga, E. parviserrata, E. sulciceps, E. sordidiapex, E. polepso Prous & Mutanen sp. nov., and E. polaris, which can mostly be distinguished based on the lancets, but the differences can be small. Valvula 3 of some specimens of E. leucopyga and often in E. polaris is rather broad and square-shaped in dorsal view while it is narrower and tends to be more triangular in the other species. The lancet of E. sordidiapex is the most similar to E. leptostigma and may not always be distinguishable. There might be differences in overall shape: – dorsal margin of lamnium almost straight, basal annuli somewhat higher than middle annuli ......... ...................................................................................................................................... E. sordidiapex – dorsal margin of lamnium somewhat bent, middle and basal annuli of similar height ...................... ..................................................................................................................................... E. leptostigma. The lancet of E. polaris is also similar, but the overall shape might be slightly different and it is perhaps (usually?) smaller than in E. leptostigma. The males are not clearly distinguishable from those of E. leucopyga, E. parviserrata, E. sulciceps, E. polepso sp. nov., and E. polaris. Penis valve of E. sordidiapex is slightly different in shape (paravalva similarly broad basally and apically, but apically broader in the other species) and has a smaller valvispina than the other species. Female Head extensively pale around eyes to nearly completely black; labrum pale; clypeus extensively or slightly pale; supraclypeal area black or pale; thorax black; pronotum black or posteriorly slightly pale (usually?); tegula pale; pterostigma pale; metafemur and metatibia pale; hind tarsus pale or brown; abdomen dorsally nearly completely black, ventrally mostly black to mostly pale; mesepisternum smooth or slightly matt; valvula 3 rather broad in dorsal view. Head can be rather like in “ Amauronematus ”. Colouration of ZMUO. 037269 (mesepisternum slightly matt) fits well with the type of leptostigma.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE5D82D9737F933FB8DF9FA.taxon	materials_examined	Type material examined Holotype Pteronidea leptostigma SWEDEN – Torne Lappmark • ♀; Abisko; 68.35 ° N, 18.83 ° E; 1 – 5 Jul. 1954; J. E. and R. B. Benson leg.; BMNH, B. M. TYPEHYM. 1.783. Notes Mesepisternum smooth; 20 serrulae. Holotype Pteronidea thunebergi FINLAND – Inari • ♀; Lemmenjoki; 68.75 ° N, 26.23 ° E; 27 Jun. 1917; E. Thuneberg leg.; MZH, http: // id. luomus. fi / GL. 3595. Notes 19 (?) serrulae, smooth mesepisternum. Best fit: DEI-GISHym 12055 (20 serrulae). Holotype Pteronidea curticornis FINLAND – Inari Lapland • ♀; Utsjoki; 69.91 ° N, 27.03 ° E; 7 Jul. 1968; V. Karvonen leg.; MZH, http: // id. luomus. fi / GL. 3563. Notes 21 serrulae, smooth mesepisternum. Best morphological fit: DEI-GISHym 12055 (20 serrulae). Holotype Pteronidea melanochroa NORWAY – Troms • ♀; Helligskogen; 69.20 ° N, 20.72 ° E; 30 May 1967 [emergence date from larvae collected in 1966]; J. Kangas leg.; reared from Salix lapponum L.; MZH, http: // id. luomus. fi / GL. 5140. Notes 21 – 22 serrulae. Holotype Pteronidea tegularis FINLAND – Inari Lapland • ♀; Utsjoki; 69.91 ° N, 27.03 ° E; 17 Jun. 1967; V. Karvonen leg.; MZH, http: // id. luomus. fi / GL. 3592. Notes 17 – 18 serrulae, matt mesepisternum. Holotype Amauronematus nitens FINLAND – Lapin Lääni • ♀; Kilpisjärvi; 69.04 ° N, 20.81 ° E; 10 Jul. 1968; L. H. Woollatt leg.; MZH, http: // id. luomus. fi / GL. 2537. Notes 19 – 20 serrulae.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE5D82D9737F933FB8DF9FA.taxon	biology_ecology	Host plants Salix spp.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE5D82D9737F933FB8DF9FA.taxon	description	Genetics COI Based on 12 specimens, maximum within-species distance is 4.26 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura polaris and Euura sulciceps. Nuclear Based on 12 specimens, maximum within-species distance is 0.62 % (0.45 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.15 %, is Euura sulciceps.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE5D82D9737F933FB8DF9FA.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Norway, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE7D852973EF97BFBE8F83E.taxon	description	Figs 110 – 111, 351	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE7D852973EF97BFBE8F83E.taxon	diagnosis	Diagnosis Euura leucopyga is most similar to E. connecta: see differences mentioned under that species. Head shape can be similar to “ Amauronematus ”. Valvula 3 can sometimes be rather broad and square-shaped in dorsal view and with a small invagination posteriorly (crassiserra) similar to some Euura polaris specimens, but lancets of these species are distinguishable (see under Euura polaris). Female Head extensively or slightly pale around eyes; labrum and clypeus pale; supraclypeal area black or pale (usually); thorax black; pronotum and tegula pale; pterostigma pale; metafemur and metatibia pale; hind tarsus pale or brown; abdomen dorsally nearly completely black, ventrally mostly black to mostly pale. Male Head extensively pale around eyes to nearly completely black; labrum pale; clypeus pale or black; supraclypeal area black (usually?); thorax black; pronotum and tegula pale; pterostigma pale; metafemur pale or basally black; metatibia pale or laterally black; hind tarsus pale or brown; abdomen dorsally nearly completely black, ventrally mostly black to mostly pale; sternum 9 pale.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE7D852973EF97BFBE8F83E.taxon	materials_examined	Type material examined Holotype Pteronidea bipicta FINLAND – Central Finland • ♀; Pihtipudas; 63.36 ° N, 25.55 ° E; 8 – 9 Jun. 1946; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 3569. Notes Best morphological match: DEI-GISHym 21390. Holotype Amauronematus crassiserra FINLAND – Lapin Lääni • ♀; Kilpisjärvi; 69.04 ° N, 20.81 ° E; 20 Apr. 1954 [ex larva rearing emergence date]; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 2525. Notes COI sequence (275 bp) of the holotype is identical to E. connecta, most specimens of E. leucopyga, and some specimens of E. parviserrata and E. sordidiapex.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE7D852973EF97BFBE8F83E.taxon	biology_ecology	Host plants Salix spp.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE7D852973EF97BFBE8F83E.taxon	description	Genetics COI Based on 25 specimens, maximum within-species distance is 3.95 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura parviserrata and Euura sordidiapex. Nuclear Based on 21 specimens, maximum within-species distance is 0.83 % (0.78 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.25 %, is Euura connecta.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFE7D852973EF97BFBE8F83E.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Norway, Russia, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF99D853973DFEEEFC1FFA6D.taxon	description	Figs 134, 370	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF99D853973DFEEEFC1FFA6D.taxon	diagnosis	Diagnosis Extensively pale body, in dorsal view long and narrow valvula 3, and rather distinctive lancet should enable its separation from the other females of Euura. Externally it might be most similar to some species of the E. miltonota group (particularly E. sagmarius), which have a ventrally distinctly concave lancet with strongly curved sutures of basal annuli (lancet ventrally more or less straight with straight or weakly curved sutures in E. lipovskyi). Males are also extensively pale and are most similar to E. fuscodorsata and some of the E. oblita group gall-makers when the penis valves are also considered. The penis valve is much smaller in E. fuscodorsata (0.8 – 0.9 mm compared to 1.2 – 1.3 mm in E. lipovskyi) and the pseudoceps in the E. oblita group seems to be broader apically than in E. lipovskyi.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF99D853973DFEEEFC1FFA6D.taxon	biology_ecology	Host plants Soft-leaved (deciduous) Rhododendron spp. (Macek & Šípek 2015; Apine & Piterāns 2021).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF99D853973DFEEEFC1FFA6D.taxon	description	Genetics COI Based on 4 specimens, maximum within-species distance is 0.91 % and the nearest neighbour, diverging by a minimum of 5.78 %, is Euura hypoxantha. Nuclear Based on 3 specimens, maximum within-species distance is 0 % (0.09 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 1.44 %, is Euura leptostigma.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF99D853973DFEEEFC1FFA6D.taxon	distribution	Distribution and material examined Holarctic. Specimens studied are from Canada (only genetics), Czech Republic, Estonia, Finland, and the USA. As already mentioned by Macek & Šípek (2015), the origin of E. lipovskyi is unknown, although the genetic variability seems to be larger in North America than in Europe. In Europe, Rhododendron luteum Sweet (one of the host plants of E. lipovskyi: Macek & Šípek 2015) is the only native soft-leaved species (growing naturally locally in Poland, Ukraine, Belarus, and Slovenia), but is however mostly distributed in Turkey and Caucasus (Piórecki & Dubiel 2009).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF99D8509741F9EDFED8FA55.taxon	description	Figs 113 – 114, 359	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF99D8509741F9EDFED8FA55.taxon	diagnosis	Diagnosis Externally most similar to E. connecta and E. leionota, but valvula 3 may usually be broader and almost square-shaped in E. mimus (narrowing towards the tip in E. connecta and E. leionota). The lancet of E. mimus is most similar to E. connecta, but seems to be smaller (lamnium length 0.66 – 0.70 mm, n = 6) and broadening from tip to base less abruptly than in E. connecta (lamnium length 0.78 – 0.79 mm, n = 3). Males of E. leionota are not known for certain. The penis valve of E. mimus is most similar to E. leucopyga, E. connecta, E. parviserrata, E. polaris, and E. sulciceps, but may have a somewhat smaller valvispina and a smooth (uneven in the others) apical margin of paravalva below valvispina.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF99D8509741F9EDFED8FA55.taxon	materials_examined	Type material examined Lectotype Pteronus mimus, here designated GERMANY – Mecklenburg-Vorpommern • ♀; Teschendorf in Mecklenburg; 53.45 ° N, 13.36 ° E; May 1896; F. W. Konow leg.; SDEI, GBIF-GISHym 4743. Paralectotype GERMANY – Mecklenburg-Vorpommern • 1 ♀.; same data as for lectotype; SDEI, GBIFGISHym 4671. Lectotype Pteronidea nitida, here designated FINLAND – Häme • ♀; Loppi; 60.72 ° N, 24.44 ° E; 18 Apr. 1943; A. Saarinen leg.; MZH, http: // id. luomus. fi / GL. 3510. Holotype Pteronidea obtusa FINLAND – Central Finland • ♀; Pihtipudas; 63.36 ° N, 25.55 ° E; 6 Jun. 1945; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 3552.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF99D8509741F9EDFED8FA55.taxon	biology_ecology	Host plants Unknown. A mention by Conde (1927) of a rearing from [cecidomyiid] galls on Salix may refer to a different species.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF99D8509741F9EDFED8FA55.taxon	description	Genetics COI Based on 4 specimens, maximum within-species distance is 0.3 % and the nearest neighbour, diverging by a minimum of 1.52 %, is Euura leucopyga. Nuclear Based on 2 specimens, maximum within-species distance is 0 % (0 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.78 %, is Euura polaris.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF99D8509741F9EDFED8FA55.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Bulgaria, Finland, Germany, Norway, Russia, Sweden, and Switzerland.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9AD851973EF9E5FB10FA82.taxon	description	Figs 101, 344	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9AD851973EF9E5FB10FA82.taxon	diagnosis	Diagnosis The most similar species is E. bipartita: see discussion under that species. Synonymy of Pachynematus vaginosus Konow is based on the penis valve (preparation PR. 231 AZ in SDEI) of a presumably syntype specimen, which resembles most closely E. monticola. Extensively pale, abdomen with distinct black line dorsally or at least terga 1 – 2 extensively black, pterostigma pale, claws bifid, valvula 3 in dorsal view elongate, gradually tapering. ZMUO. 063341 is slightly darker (fore and middle femora at base and abdomen dorsally more extensively black, valvula 3 mostly black) than the syntype DEI-GISHym 88923. Male ZMUO. 061039 has small subapical tooth.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9AD851973EF9E5FB10FA82.taxon	materials_examined	Type material examined Lectotype Nematus monticola, here designated SWEDEN • ♀; Lapponia intermedia [central Lapland]; C. H. Boheman leg.; MZLU, MZLU 2017319 / DEI-GISHym 88923. Notes 17 – 18 serrulae. Best morphological match: ZMUO. 063341.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9AD851973EF9E5FB10FA82.taxon	biology_ecology	Host plants Comarum palustre L. (Kangas 1985; Pschorn-Walcher & Altenhofer 2000).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9AD851973EF9E5FB10FA82.taxon	description	Genetics COI Based on 6 specimens, maximum within-species distance is 3.5 % and the nearest neighbour, diverging by a minimum of 0 %, is Euura bipartita. Nuclear Based on 5 specimens, maximum within-species distance is 0.92 % (0.34 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.35 %, is Euura bipartita.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9AD851973EF9E5FB10FA82.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Sweden, and the United Kingdom.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9BD857973AFAD5FC78FE5B.taxon	description	Figs 119, 363	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9BD857973AFAD5FC78FE5B.taxon	diagnosis	Diagnosis Small (4 – 5 mm), mostly black, with narrow and rather short valvula 3 in dorsal view. Most similar to E. punctifrons and E. uda, from which females of E. parvilabris are most easily distinguishable by their bifid claws (not clearly bifid but with small or large subapical tooth in E. uda and small subapical tooth in E. punctifrons). Male penis valves of these three species are clearly different from each other, E. parvilabris having a significantly shorter penis valve (0.9 – 1.0 mm), whereas 1.2 – 1.3 mm in E. punctifrons and E. uda. Penis valve of E. parvilabris is most similar to E. fuscodorsata, which is however much paler than E. parvilabris. Female 4.5 – 5.0 mm. Head, thorax and abdomen black; labrum brown or pale; clypeus partly pale or brown; tegula black to pale; pterostigma uniformly pale; metafemur apically slightly pale; metatibia pale; hind tarsus brown or pale; tergum 10, hypopygium posteriorly and valvifer 2 mostly black to extensively brown or pale; mesepisternum smooth or slightly matt; claws bifid; valvula 3 in dorsal view thin and acute at apex. Male 4.0 – 4.5 mm. Head, thorax and abdomen black; labrum black or brown; pterostigma uniformly pale or with dark margins; metafemur black or slightly apically pale; metatibia brown; hind tarsus black or brown; sternum 9 black or slightly brown; mesepisternum smooth or slightly matt; hind claws (usually?) bifid, fore and middle claws with small subapical tooth or bifid.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9BD857973AFAD5FC78FE5B.taxon	materials_examined	Type material examined Lectotype Nematus parvilabris, here designated SWEDEN – Jämtland • ♀; Kälahög; A. G. Dahlbom leg.; MZLU, MZLU 2017336. Lectotype Pontania birulae, here designated RUSSIA – Yakutia • ♂; New Siberian Islands; 75.0 ° N, 149.0 ° E; 12 – 28 Jun. 1902; A. A. Birula leg.; SDEI, GBIF-GISHym 3857. Paralectotypes Nematus parvilabris RUSSIA – Yakutia • 2 ♀♀; New Siberian Islands; 75.0 ° N, 149.0 ° E; 12 – 28 Jun. 1902; A. A. Birula leg.; SDEI, GBIF-GISHym 3858, GBIF-GISHym 3859 • 1 ♂; same data as for preceding; SDEI, GBIFGISHym 3856. Holotype Pteronidea nubium UNITED KINGDOM – Scotland • ♀; Breadalbane Mts; above 610 m a. s. l.; 7 – 14 Jun. 1932; R. B. Benson leg.; BMNH, B. M. TYPEHYM. 1.637. Holotype Pachynematus abstrusus SWEDEN – Torne Lappmark • ♀; Abisko; 68.35 ° N, 18.83 ° E; 1939; R. Krogerus leg.; MZH, http: // id. luomus. fi / GL. 5144. Paratype Pteronidea roberti SWEDEN – Torne Lappmark • ♀; Riksgränsen; 68.43 ° N, 18.12 ° E; 11 – 12 Jul. 1954; R. B. and J. E. Benson leg.; MZH, http: // id. luomus. fi / GL. 5137.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9BD857973AFAD5FC78FE5B.taxon	biology_ecology	Host plants Salix herbacea L. A female (ZMUO. 063345) was used for ex ovo rearing on Salix herbacea. Since we could not exclude the possibility of the presence of eggs or young larvae of other species in the rearing bucket (containing numerous Salix herbacea taken in the field), we confirmed the identity of one of the larvae by sequencing (ZMUO. 064850). The species might have a second generation in favourable conditions, because one male (ZMUO. 064859) emerged only about three weeks after the ex ovo experiment.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9BD857973AFAD5FC78FE5B.taxon	description	Genetics COI Based on 9 specimens, maximum within-species distance is 2.74 % and the nearest neighbours, diverging by a minimum of 1.83 %, are Euura leptostigma and E. leucopyga. Nuclear Based on 8 specimens, maximum within-species distance is 0.46 % (0.3 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 1.05 %, is Euura excisa.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9BD857973AFAD5FC78FE5B.taxon	distribution	Distribution and material examined Holarctic. Specimens studied are from Finland, Norway, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9DD8549733FE1FFC7FFED8.taxon	description	Figs 129, 354 – 355	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9DD8549733FE1FFC7FFED8.taxon	diagnosis	Diagnosis Externally, females are most similar to E. leucopyga, E. leptostigma, E. sulciceps, E. sordidiapex, E. polepso sp. nov., and E. polaris. The overall shape of the lancet (gradually broadening from tip to base) and shape of serrulae (very elongate and flat) distinguishes E. parviserrata from these species. Serrulae of E. fuscomaculata are quite similar to E. parviserrata, but females of this species have antennae usually as long as costa + pterostigma while antennae are about as long as costa in E. parviserrata. Penis valves of E. parviserrata do not seem to be clearly distinguishable from E. leucopyga, E. leptostigma, E. polaris, E. sulciceps, and E. polepso. Head can be like in “ Amauronematus ”. Female Head extensively or slightly pale around eyes; labrum and clypeus pale; supraclypeal area black (usually?); thorax black; pronotum and tegula pale; pterostigma pale; metafemur and metatibia pale; hind tarsus pale or brown; abdomen nearly completely black (usually?); mesepisternum smooth or slightly matt. Male Head slightly pale around eyes to nearly completely black; labrum pale; clypeus extensively or slightly pale; supraclypeal area black (usually?); thorax black; pronotum black to extensively pale; tegula pale; pterostigma pale; metafemur pale or basally black; metatibia pale; hind tarsus pale or brown; abdomen dorsally nearly completely black, ventrally mostly black to slightly pale; sternum 9 pale.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9DD8549733FE1FFC7FFED8.taxon	materials_examined	Type material examined Holotype Pteronidea parviserrata RUSSIA – Karelia • ♀; Paanajärvi; 66.3 ° N, 30.1 ° E; 200 m a. s. l.; S. Platonoff leg.; MZH, http: // id. luomus. fi / GL. 3575.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9DD8549733FE1FFC7FFED8.taxon	biology_ecology	Host plants Salix phylicifolia according to Kangas (1985).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9DD8549733FE1FFC7FFED8.taxon	description	Genetics COI Based on 7 specimens, maximum within-species distance is 4.06 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura leucopyga and E. sordidiapex. Nuclear Based on 7 specimens, maximum within-species distance is 0.14 % (0.58 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.35 %, is Euura leptostigma.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9DD8549733FE1FFC7FFED8.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Russia, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9ED85494C0FE9FFD75F8A3.taxon	description	Figs 102, 345	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9ED85494C0FE9FFD75F8A3.taxon	diagnosis	Diagnosis Female 5.3 – 5.5 mm (n = 2). Mostly black body, not bifid claws (with small or large subapical tooth), and lancets should enable separation of females of this species from most of the other Euura. Euura punctifrons, with a small subapical tooth, have a somewhat similar lancet, but this species tends to be smaller (<5 mm) and even darker (pronotum black and femora usually mostly black) than E. perkioemaekii (pronotum posteriorly and femora mostly pale). Very similar can also be dark specimens of E. bipartita, which seem to have somewhat differently shaped serrulae (ventrobasal tip more acute and often more protruding) and at least usually seem to have bifid claws. Male The males, which have penis valves most similar to E. bipartita and E. monticola, might not be distinguishable from dark specimens of E. bipartita that have a small subapical tooth on the claw.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9ED85494C0FE9FFD75F8A3.taxon	materials_examined	Type material examined Holotype Pachynematus perkioemaekii FINLAND – Kuusamo • ♀; Oulanka; 66.47 ° N, 29.08 ° E; 1 Jul. 1958; J. Perkiömäki leg.; MZH, http: // id. luomus. fi / GL. 3509. Notes 16 serrulae. Nearly perfect morphological match: DEI-GISHym 84260 (15 – 16 serrulae).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9ED85494C0FE9FFD75F8A3.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9ED85494C0FE9FFD75F8A3.taxon	description	Genetics COI Based on 2 specimens, maximum within-species distance is 0 % and the nearest neighbour, diverging by a minimum of 0.91 %, is Euura monticola. Nuclear Based on 2 specimens, maximum within-species distance is 0.06 % (0.12 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.21 %, is Euura bipartita.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9ED85494C0FE9FFD75F8A3.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9ED855972FF8B6FE13F88D.taxon	description	Figs 132, 356	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9ED855972FF8B6FE13F88D.taxon	diagnosis	Diagnosis Most similar to E. leptostigma, E. polepso sp. nov., and some specimens of E. leucopyga. Often, its rather broad and square-shaped valvula 3 in dorsal view (like in some E. leucopyga) distinguishes E. polaris from E. leptostigma and E. polepso which tend to have a narrower valvula 3. The smooth mesepisternum may help to distinguish E. polaris from E. polepso (always slightly matt?). The combination of triangular serrulae, small cypsellae, and gradually narrowing lancet of E. polaris help to distinguish it from lancets of E. polepso (large cypsellae) and E. leucopyga (somewhat flatter serrulae and more abruptly narrowing lancet). Lancets of E. leptostigma are rather similar to E. polaris, but may differ in overall shape and are perhaps (usually?) larger. The males are not clearly distinguishable from E. leptostigma, E. leucopyga, E. parviserrata, E. sulciceps, and E. polepso.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9ED855972FF8B6FE13F88D.taxon	materials_examined	Type material examined Lectotype Nematus polaris, here designated RUSSIA – Novaja Zemlya • ♀; Matotschkin Scharr [Matochkin Strait]; 73.3 ° N, 55.6 ° E; 1875; NHRS, NHRS-HEVA 000006445.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9ED855972FF8B6FE13F88D.taxon	biology_ecology	Host plants Unknown. Lindqvist (1944 b) reported Salix spp., but this apparently refers to E. leucopyga (ab. leucopyga) in southern Finland, while E. polaris is known only from (sub) arctic habitats.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9ED855972FF8B6FE13F88D.taxon	description	Genetics COI Based on 8 specimens, maximum within-species distance is 2.89 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura leptostigma, E. sulciceps, and E. fuscarima. Nuclear Based on 8 specimens, maximum within-species distance is 0.66 % (0.85 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.26 %, is Euura leptostigma.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9ED855972FF8B6FE13F88D.taxon	distribution	Distribution and material examined Holarctic. Specimens studied are from Finland, Norway, and Russia. Nearctic records, although likely, need confirmation.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9FD85B971EF8CBFBE8FB03.taxon	description	Figs 127, 364	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9FD85B971EF8CBFBE8FB03.taxon	diagnosis	Diagnosis Usually extensively pale, but the body can be mostly black while the head remains extensively pale. The most similar are E. bipartita (specimens with dorsally black abdomen), E. fuscodorsata, E. fuscomaculata and E. lienterica, while darker specimens might be confused also with E. polaris, that has a rather similar lancet. Lancets of E. fuscodorsata (serrulae prominent and sharp) and E. lienterica (serrulae usually prominent and sutures somewhat S-shaped) can be distinguished from E. poppii (apical serrulae elongate and flat and sutures not distinctly curved). The lancet of E. fuscomaculata is very similar to E. poppii, but perhaps still with less protruding serrulae and the valvula 3 in dorsal view seems to be narrower in the middle and at its base compared to E. poppii. Lancet of E. bipartita (e. g., Fig. 99) can also be quite similar, but the specimens with dorsally black abdomen seem to have darker head and valvula 3 compared to E. poppii. Euura polaris usually has mostly black head or is somewhat brown behind the eyes (extensively pale in E. poppii), and its antennae are possibly shorter than in E. poppii. Usually, E. polaris also has broader sawsheath that in dorsal view is not distinctly narrowed at the tip as in E. poppii. Its extensively pale colouration and and penis valve shape (similar to e. g., E. leucopyga and E. parviserrata) and length (1.0 – 1.1 mm, in most other Euura more than 1.2 mm) should distinguish E. poppii males reliably from the other Euura. Female 4.0 – 5.0 mm. Head extensively pale around eyes; labrum, clypeus and supraclypeal area pale; flagellum black or pale ventrally; thorax black to extensively pale laterally and slightly pale dorsally; pronotum and tegula pale; pterostigma pale; metafemur pale or slightly black basally; metatibia pale; hind tarsus pale or brown (usually) to black; abdomen dorsally nearly completely black, ventrally nearly completely black to completely pale; valvula 3 basally pale; mesepisternum smooth; claws bifid; lancet with 15 – 17 serrulae. Male (based on two specimens) 3.5 – 4.0 mm. Head extensively pale around eyes; labrum, clypeus and supraclypeal area pale; flagellum pale ventrally; thorax black dorsally, extensively pale laterally; pronotum and tegula pale; pterostigma pale; metafemur pale; metatibia pale; hind tarsus pale or brown; abdomen dorsally nearly completely black, ventrally pale; sternum 9 pale; mesepisternum smooth; claws bifid or with small subapical tooth.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9FD85B971EF8CBFBE8FB03.taxon	materials_examined	Type material examined Lectotype Pontania poppii RUSSIA • ♀; Kanin Peninsula; 68.0 ° N, 45.0 ° E; B. Poppius leg.; SDEI, GBIF-GISHym 3865. Notes Lancet more similar to parvulus syntype NHRS-HEVA 000006478 than NHRS-HEVA 000006479. Lancet fits best with wolteri holotype. Abdomen ventrally pale. Head and thorax missing. Possible paralectotypes in MZH have long antennae. Holotype Pteronidea lindbergi RUSSIA – Murmansk oblast • ♀; Petsamo [Pechenga]; 69.54 ° N, 31.19 ° E; 20 Jul. 1929; H. Lindberg leg.; MZH, http: // id. luomus. fi / GL. 3571. Notes 16 – 17 serrulae. Best morphological match: DEI-GISHym 21379 (15 – 16 serrulae). Holotype Pteronidea wolteri RUSSIA – Murmansk oblast • ♀; Petsamo [Pechenga], Yläluostari [Luostari]; 69.43 ° N, 31.04 ° E; 10 Jul. 1930; W. Hellén leg.; MZH, http: // id. luomus. fi / GL. 3598. Notes Lancet fits rather well with poppii (lectotype and DEI-GISHym 21379). Externally fits best with the winteri holotype.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9FD85B971EF8CBFBE8FB03.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9FD85B971EF8CBFBE8FB03.taxon	description	Genetics COI Based on 6 specimens, maximum within-species distance is 3.95 % and the nearest neighbour, diverging by a minimum of 1.37 %, is Euura polaris. Nuclear Based on 5 specimens, maximum within-species distance is 0.72 % (0.51 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.76 %, is Euura leptostigma.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF9FD85B971EF8CBFBE8FB03.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Norway, Russia, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF91D858973EFB56FB8DFB2B.taxon	description	Figs 120, 361	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF91D858973EFB56FB8DFB2B.taxon	diagnosis	Diagnosis The most similar species is E. uda, which is best distinguished by examination of saws and penis valves. In E. uda, tangium of lancet is more elongate, paravalva of penis valve is ventrally straight (concave in E. punctifrons) and anterior margin of paravalva below valvispina is straight or concave (convex in E. punctifrons). Euura uda tends to have also a larger subapical tooth of the claw than E. punctifrons. Female 4.4 – 5.0 mm. Head black; labrum pale; clypeus black or slightly pale; supraclypeal area black; thorax black; pronotum black; tegula pale; pterostigma pale; metafemur mostly black to mostly pale; metatibia pale; hind tarsus pale to black; abdomen nearly completely black; valvula 3 black with dorsobasal pale area; mesepisternum smooth; claws with small subapical tooth; valvula 3 in dorsal view narrow and apically acute. Male 4.5 mm. Head black; labrum pale; clypeus black or slightly pale; supraclypeal area black; thorax black; pronotum black; tegula black; pterostigma pale; metafemur black or slightly pale; metatibia pale; hind tarsus black or brown; abdomen black; sternum 9 pale; mesepisternum smooth or slightly matt; claws with minute subapical tooth.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF91D858973EFB56FB8DFB2B.taxon	materials_examined	Type material examined Lectotype Pachynematus punctifrons, here designated SWEDEN – Torne Lappmark • ♀; Torneträsk; 68.22 ° N, 19.74 ° E; 400 m a. s. l.; R. Malaise leg.; NHRS, NHRS-HEVA 000003566. Holotype Pachynematus glabriceps FINLAND – Inari Lapland • ♀; Utsjoki; 69.91 ° N, 27.03 ° E; 6 Jul. 1947; M. Nuorteva leg.; MZH, http: // id. luomus. fi / GL. 3567.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF91D858973EFB56FB8DFB2B.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF91D858973EFB56FB8DFB2B.taxon	description	Genetics COI Based on 7 specimens, maximum within-species distance is 7.34 % and the nearest neighbour, diverging by a minimum of 1.52 %, is Euura connecta. Nuclear Based on 4 specimens, maximum within-species distance is 0.23 % (0.12 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.81 %, is Euura gehrsi.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF91D858973EFB56FB8DFB2B.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Norway, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF92D8599751FB2DFAFEFD70.taxon	description	Figs 117, 368 – 369	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF92D8599751FB2DFAFEFD70.taxon	diagnosis	Diagnosis Mostly black, abdomen ventrally pale (sterna as well as terga laterally), pterostigma pale, claws with small subapical tooth to bifid, mesepisternum smooth, valvula 3 in dorsal view elongate, thin and gradually tapering. The most similar species is E. declinata, females of which have black sterna (pale in E. scotonota). The differences between males are uncertain, because no males of E. declinata have been sequenced to confirm their identity. One studied candidate male seems to have a penis valve more similar to the drawing of the penis valve of the declinata holotype (unpublished manuscript by Conde) than to E. scotonota. The valvispina is straight and broad at the base in E. declinata whereas slightly curved and narrower at the base in at least some (most?) E. scotonota, but the apparent variability in E. scotonota (Figs 368 – 369) makes this distinction questionable. See also differences from E. fuscodorsata under that species. Another closely related species is E. excisa (claws with small subapical tooth, mesepisternum matt).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF92D8599751FB2DFAFEFD70.taxon	biology_ecology	Host plants Bistorta officinalis.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF92D8599751FB2DFAFEFD70.taxon	description	Genetics COI Based on 8 specimens, maximum within-species distance is 3.04 % and the nearest neighbour, diverging by a minimum of 1.29 %, is Euura declinata. Nuclear Based on 4 specimens, maximum within-species distance is 0.38 % (0.2 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.71 %, is Euura excisa.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF92D8599751FB2DFAFEFD70.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Bulgaria, Finland, France, Germany, and Italy. Since we treat E. fuscodorsata as a distinct species (not as a synonym of E. scotonota) and because its holotype has been the only basis for recording E. scotonota from Finland or Fennoscandia in general, E. scotonota may in fact be absent in this region. Euura scotonota should be removed from the faunal list of Finland.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF93D85E9734FCC7FB8DFC1B.taxon	description	Figs 130, 360	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF93D85E9734FCC7FB8DFC1B.taxon	diagnosis	Diagnosis Females are most similar to E. leptostigma, see discussion under that species. Male penis valve of E. sordidiapex (with smaller valvispina and paravalva similarly broad basally and apically) is slightly different from E. leptostigma and similar species (valvispina larger and paravalva apically broader than basally). Female 5.5 – 6.0 mm. Head black or slightly pale around eyes; labrum pale; clypeus black to pale; supraclypeal area black; thorax black; pronotum and tegula black or slightly pale; pterostigma pale; metafemur pale or slightly black; metatibia pale; hind tarsus pale or brown; abdomen nearly completely black; terga 9 – 10, valvifer 2, and cerci pale; valvula 3 pale or brown with black margins; mesepisternum slightly matt; claws bifid; valvula 3 in dorsal view narrow and apically acute. Male 4.5 – 5.5 mm. Head black; labrum pale; clypeus black or slightly pale; supraclypeal area black; thorax black; pronotum black; tegula black; pterostigma pale; metafemur mostly pale; metatibia pale; hind tarsus pale or brown; abdomen black; sternum 9 pale; mesepisternum smooth or slightly matt; claws bifid.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF93D85E9734FCC7FB8DFC1B.taxon	materials_examined	Type material examined Holotype Pteronidea sordidiapex FINLAND – Lapin Lääni • ♀; Kilpisjärvi; 69.04 ° N, 20.81 ° E; 2 Jul. 1950; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 3591. Notes Mesepisternum matt. Best morphological match: DEI-GISHym 12536. Holotype Pteronidea aspera FINLAND – Lapin Lääni • ♀; Saana; 69.05 ° N, 20.85 ° E; 23 Jun. 1938; A. Nordman leg.; MZH, http: // id. luomus. fi / GL. 3561. Notes Mesepisternum slightly matt. Best morphological match: DEI-GISHym 12536 (externally almost identical).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF93D85E9734FCC7FB8DFC1B.taxon	biology_ecology	Hosts plants Betula nana L. and B. pubescens.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF93D85E9734FCC7FB8DFC1B.taxon	description	Genetics COI Based on 12 specimens, maximum within-species distance is 3.65 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura leucopyga and E. parviserrata. Nuclear Based on 11 specimens, maximum within-species distance is 0.53 % (0.59 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.44 %, is Euura sulciceps.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF93D85E9734FCC7FB8DFC1B.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Norway, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF94D85F9725FC5DFB8DFED9.taxon	description	Figs 121, 357	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF94D85F9725FC5DFB8DFED9.taxon	diagnosis	Diagnosis Mostly black body, bifid claws, valvula 3 somewhat expanded in middle, and structure of lancets (abruptly narrowing from base to apex, protruding serrulae, apical serrulae also rather acute, middle sutures more or less straight) should enable separation of females from the other similar species. The males are not clearly distinguishable from E. leptostigma, E. leucopyga, E. parviserrata, E. polaris, and E. polepso sp. nov.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF94D85F9725FC5DFB8DFED9.taxon	materials_examined	Type material examined Holotype Pteronidea sulciceps NORWAY – Nordland • ♀; Umbukta, Krabfjäll; 66.15 ° N, 14.59 ° E; 13 Jul. 1957; S. Gaunitz leg.; MZH, http: // id. luomus. fi / GL. 5118.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF94D85F9725FC5DFB8DFED9.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF94D85F9725FC5DFB8DFED9.taxon	description	Genetics COI Based on 5 specimens, maximum within-species distance is 0.15 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura leptostigma and E. polaris. Nuclear Based on 4 specimens, maximum within-species distance is 0.41 % (0.44 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.15 %, is Euura leptostigma.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF94D85F9725FC5DFB8DFED9.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Norway, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF95D85F975DFE91FD7BF9C2.taxon	description	Figs 106, 340	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF95D85F975DFE91FD7BF9C2.taxon	diagnosis	Diagnosis Its small subapical claw tooth and the type of lancet (annuli with short and stout setae, all annuli bearing serrulae with denticles) suggest that the species may be most closely related to E. infirma. Ventrally strongly concave lancet, only basal-most annulus without setae, and more annuli (14 – 15) definitely suggest that E. taegeri is a species distinct from E. infirma (ventrally straight or slightly concave lancet, three basal annuli without setae, 12 annuli). The males are most similar to E. annulata in colouration and shape of penis valves. In E. taegeri, the valvispina may be somewhat broader than in E. annulata and pseudoceps may be dorsoapically slightly convex (slightly concave in E. annulata). Female 4.5 – 5.0 mm. Male 4.0 – 4.5 mm.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF95D85F975DFE91FD7BF9C2.taxon	materials_examined	Type material examined Paratypes Polynematus taegeri FRANCE – Provence-Alpes-Cote-d’Azur • 1 ♀; Ailefroide; 44.89 ° N, 6.45 ° E; 25 May 1990; J. Lacourt leg.; SDEI, DEI-GISHym 12670 • 2 ♂♂; same data as for preceeding; SDEI, DEI-GISHym 12668, DEIGISHym 12669.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF95D85F975DFE91FD7BF9C2.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF95D85F975DFE91FD7BF9C2.taxon	description	Genetics COI No data. Nuclear No data.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF95D85F975DFE91FD7BF9C2.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from France.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF95D85C9740F995FC10FA00.taxon	description	Figs 122, 365	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF95D85C9740F995FC10FA00.taxon	diagnosis	Diagnosis The most similar species is E. punctifrons, see discussion under that species. Female 5.0 – 5.5 mm. Head black; labrum pale; clypeus black; supraclypeal area black; thorax black; pronotum black; tegula pale; pterostigma pale; metafemur mostly black (to mostly pale?); metatibia pale; hind tarsus pale (to black?); abdomen nearly completely black; valvula 3 black (always without dorsobasal pale area?); mesepisternum smooth or slightly matt; claws with small subapical tooth; valvula 3 in dorsal view narrow and apically acute.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF95D85C9740F995FC10FA00.taxon	materials_examined	Type material examined Lectotype Nematus (Pachynematus) acutiventris, here designated FINLAND – Lapin Lääni • ♀; Kilpisjärvi, Pikku-Malla; 3 Jul. 1935; W. Hellén leg.; 69.05 ° N, 20.74 ° E; MZH, http: // id. luomus. fi / GL. 3560. Holotype Pachynematus inopinatus FINLAND – Lapin Lääni • ♀; Kilpisjärvi, Malla; 69.07 ° N, 20.69 ° E; 18 Jul. 1943; R. Frey leg.; MZH, http: // id. luomus. fi / GL. 3580. Notes Lancet as in E. uda, but claws with small subapical tooth as in E. punctifrons.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF95D85C9740F995FC10FA00.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF95D85C9740F995FC10FA00.taxon	description	Genetics COI Based on 7 specimens, maximum within-species distance is 0.3 % and the nearest neighbour, diverging by a minimum of 3.04 %, is Euura connecta. Nuclear Based on 5 specimens, maximum within-species distance is 0.36 % (0.22 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.99 %, is Euura fuscomaculata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF95D85C9740F995FC10FA00.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF96D85D974CFA57FCBDFD00.taxon	description	Fig. 128 Notes Only one female (DEI-GISHym 84691) known. 5.4 mm. Nuclear data suggests that it is different from all the other sampled species. Externally most similar to E. leptostigma, E. leucopyga, E. parviserrata, E. polaris, E. sordidiapex, and E. sulciceps. Of these, E. polaris has the most similar lancet, but DEIGISHym 84691 may have somewhat longer and flatter serrulae. DEI-GISHym 84691 has also a slightly matt mesepisternum which is smooth in E. polaris. A similar lancet is also found in E. poppii, which can be almost as dark as DEI-GISHym 84691, but E. poppii seems to be (usually?) smaller (<5 mm) and has a smooth mesepisternum.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF96D85D974CFA57FCBDFD00.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF96D85D974CFA57FCBDFD00.taxon	description	Genetics COI Only one sequence available. The nearest neighbour, diverging by a minimum of 1.98 %, is Euura connecta. Nuclear Only one sequence available, a female with haplotypes diverging by 0.52 %. The nearest neighbour, diverging by a minimum of 0.94 %, is Euura poppii.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF96D85D974CFA57FCBDFD00.taxon	distribution	Distribution and material examined Palaearctic. Only one specimen studied from Finland.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF97D840971AFD57FC10FCEC.taxon	description	urn: lsid: zoobank. org: act: 2049 F 196 - 0 E 59 - 403 C- 8 D 3 B- 5 AF 1 FEABA 7 D 1 Figs 79 – 80, 133, 358	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF97D840971AFD57FC10FCEC.taxon	diagnosis	Diagnosis Females are most similar to those of E. leptostigma, E. leucopyga, E. parviserrata, E. polaris, E. sordidiapex, and E. sulciceps, best distinguished by the lancet (lamnium 2.4 – 2.5 times as long as radix, distinct cypsellae, lamnium gradually broadening from tip to base, horizontal gap between apical and basal parts of consecutive serrulae large). The males are not clearly distinguishable from those of E. leptostigma, E. leucopyga, E. parviserrata, E. polaris, and E. sulciceps.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF97D840971AFD57FC10FCEC.taxon	etymology	Etymology The species name, a noun in apposition, is formed from a combination of the first letters of some of the names of the most similar species (po laris, lep tostigma, so rdidiapex).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF97D840971AFD57FC10FCEC.taxon	materials_examined	Type material Holotype FINLAND – Lapin Lääni • ♀; Toskalharji [768: 328]; 69.16 ° N, 21.58 ° E; 23 Jun. 2021; A. Liston, M. Mutanen, M. Prous and H. Nyström leg.; ZMUO, ZMUO. 059303. Paratypes FINLAND – Lapin Lääni • 1 ♂; same data as for holotype; ZMUO, ZMUO. 059951 • 1 ♂; same data as for holotype; 24 Jun. 2021; ZMUO, ZMUO. 059855 • 1 ♀; Kilpisjärvi, Jehkas; 69.09 ° N, 20.80 ° E; 550 – 950 m a. s. l.; 28 Jun. 2020; M. Mutanen, M. Prous and A. Liston leg.; SDEI, DEI-GISHym 84539 • 1 ♂; same data as for preceding; M. Mutanen leg.; ZMUO, ZMUO. 041900. NORWAY – Sogn og Fjordane • 1 ♀, Aurlandsvegen, Nedre Kaldeklettane Lok. 2; 61.021 ° N, 7.332 ° E; 1112 m a. s. l.; 26 Jun. 2011; E. Heibo leg.; CEH, N 8571. Other material exmined FINLAND – Lapin Lääni • 1 ♂; same data as for holotype; 24 Jun. 2021; ZMUO. 059930 might also belong here.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF97D840971AFD57FC10FCEC.taxon	description	Description Female Body 5.2 – 5.5 mm. Colour mostly black. Labrum pale; labial and maxillary palps brown; mandibles reddish-brown at apex; clypeus black or ventrally pale; gena slightly pale; tibia and tarsomeres 1 – 2 or 1 – 3 more or less pale; apical third to two-thirds of femora pale; all trochanters and trochantelli, or at least hind trochanters and trochantelli more or less pale; hind coxae basally pale; pronotum black or posteriorly slightly pale; tegula (except medial margin) pale; pterostigma and costa uniformly pale; hypopygium posteriorly, valvifer 2, and terga 8 – 10 extensively pale; valvula 3 basally pale; cerci pale. Clypeus distinctly emarginate; frontal area between antennae rather flat, not distinctly angulate (approaching “ Amauronematus - type ”); postocellar area about 2.5 – 3.5 times as broad as long; antenna about as long as costa; mesepisternum smooth or slightly matt; claws bifid; valvula 3 in dorsal view not or slightly tapering, with indistinct carina at posterior edge and sometimes with indistinct invagination posteriorly. Lancet with 19 – 20 serrulae; lamnium 2.4 – 2.5 times as long as radix; serrulae triangular with numerous microdenticles, not strongly protruding, and with cypsellae; hair-like setae half or less of annulus length, absent in apical 3 – 4 annuli. Male Body 5 mm. Colour mostly black, darker than female. Labrum brown; labial and maxillary palps brown; mandibles reddish-brown at apex; clypeus black or ventrally slightly pale; tibia and tarsi pale or brown; apical third to two-thirds of femora pale; trochanters and trochantelli black to slightly pale; pterostigma and costa more or less pale, costa somewhat darkened in middle; sternum 9 pale. Clypeus emarginate, less so than in female; frontal area between antennae rather flat, not distinctly angulate (approaching “ Amauronematus - type ”); postocellar area about 2.5 – 3.5 times as broad as long; antenna about as long as or somewhat shorter than costa and pterostigma combined; mesepisternum smooth or slightly matt; claws bifid; projection of tergum 8 distinct, about as long as broad and with truncate apex.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF97D840971AFD57FC10FCEC.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF97D840971AFD57FC10FCEC.taxon	description	Genetics COI Based on 5 specimens, maximum within-species distance is 0 % and the nearest neighbour, diverging by a minimum of 0.76 %, is Euura leptostigma. Nuclear Based on 4 specimens, maximum within-species distance is 0.25 % (0.31 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.41 %, is Euura polaris.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF97D840971AFD57FC10FCEC.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, and Norway.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF8AD8419730FC2AFACEFB72.taxon	description	Figs 135, 371	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF8AD8419730FC2AFACEFB72.taxon	diagnosis	Diagnosis The most similar species is E. vicina, which is best distinguished by its inner hind tibial spur being longer than the apical breadth of hind tibia (shorter in E. caeruleocarpus). Occasionally, northern specimens of E. caeruleocarpus have a bicoloured pterostigma (basally or externally black and apically or internally brown or yellowish). Genetically, E. villosa is very close to E. caeruleocarpus, but morphologically these species can be distinguished well: – head and thorax with long hair; hind tibia completely and hind tarsus mainly yellow; pterostigma yellow .................................................................................................................................. E. villosa – head and thorax with short hair; hind tibia black at tip and hind tarsus completely black; pterostigma black, rarely bicoloured ........................................................................................ E. caeruleocarpus. Female: 8.0 – 10.5 mm. Male: 7.5 – 8.5 mm.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF8AD8419730FC2AFACEFB72.taxon	materials_examined	Type material examined Holotype Nematus caeruleocarpus GERMANY – Niedersachsen • ♀; Harz; 51.8 ° N, 10.3 ° E; W. Saxesen leg.; ZSM, GBIF-GISHym 3212. Lectotype Nematus sulcipes, here designated GERMANY • ♀; ZSM, GBIF-GISHym 3446. Lectotype Nematus brevispinis, here designated GERMANY – Nordrhein-Westfalen • ♂; Aachen area; 50.77 ° N, 6.09 ° E; ZSM, GBIF-GISHym 3210. Lectotype Nematus brachyacanthus, here designated SWEDEN • ♀; Skåne; MZLU, MZLU 2017284.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF8AD8419730FC2AFACEFB72.taxon	biology_ecology	Host plants The main hosts are Salix spp., particularly S. fragilis L., S. purpurea L., S. triandra L. and S. viminalis L. (Miles 1936). Less frequently used are Populus spp. (e. g., Chambers 1947). Unconfirmed are Paeonia officinalis L., Delphinium sp. and Aquilegia sp. (Benson 1958 a).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF8AD8419730FC2AFACEFB72.taxon	description	Genetics COI Based on 8 specimens, maximum within-species distance is 1.22 % and the nearest neighbour, diverging by a minimum of 0.61 %, is Euura villosa. Nuclear Based on 3 specimens, maximum within-species distance is 0.33 % (0.33 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.5 %, is Euura villosa.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF8AD8419730FC2AFACEFB72.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Austria, Bulgaria, Finland, Germany, Russia, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF8BD8469754FAC5FD62FC09.taxon	description	Figs 136, 372	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF8BD8469754FAC5FD62FC09.taxon	diagnosis	Diagnosis Its large size (♀ 8 – 10 mm, ♂ 7 – 9 mm), black body with yellow legs (including complete hind tibia and most of hind tarsus), long hair on head and thorax, and yellow pterostigma distinguish the species well from the other Euura. Euura caeruleocarpus is genetically very close (see under that species for morphological differences).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF8BD8469754FAC5FD62FC09.taxon	materials_examined	Type material examined Lectotype Nematus villosus, here designated SWEDEN • ♀; Lapponia intermedia [central Lapland]; C. H. Boheman leg.; NHRS, NHRS-HEVA 000003992. Lectotype Nematus arcticus, here designated NORWAY – Svalbard • ♂; Green Harbour [Grønfjorden]; 78.04 ° N, 14.25 ° E; NHRS, NHRS-HEVA 000006480.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF8BD8469754FAC5FD62FC09.taxon	biology_ecology	Host plants Salix glauca is the only recorded host, but probably other Salix spp. are also used.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF8BD8469754FAC5FD62FC09.taxon	description	Genetics COI Only one sequence is available. The nearest neighbour, diverging by a minimum of 0.61 %, is Euura caeruleocarpus. Nuclear Only one sequence is available, a female with haplotypes diverging by 0.39 %. The nearest neighbour, diverging by a minimum of 0.5 %, is Euura caeruleocarpus.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF8BD8469754FAC5FD62FC09.taxon	distribution	Distribution and material examined Holarctic. Specimens studied are from Norway.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF8CD846976AFC42FD4BFA38.taxon	description	We recognize six species in the group, but nuclear data strongly suggest that E. clitellata contains at least four species and E. fallax probably three. Additional research (particularly to sequence nuclear genes of more specimens to assess morphological variability) is necessary to better associate type specimens with putative species suggested by nuclear genes. Euura vaga, although morphologically a member of the group, is excluded because based on genetics it seems to be about as distant to the clitellata group as to other species groups. Claws with small subapical tooth and characters of lancet (no setae, sutures strongly bending apically, basal serrulae not strongly projecting posteriorly) and valvula 3 (in dorsal view distinctly broadened at base) distinguish the females from those of the other Euura groups and from E. vaga (basal serrulae strongly projecting posteriorly). Males have distinct penis valves enabling reliable identification of species (except within E. clitellata if these are split into additional species). The width of the mesocutellum seems to correlate positively with the extent of expansion of the head. The E. clitellata subgroup and E. fallax usually have very pale heads, whereas E. moerens, E. lichtwardti and E. clibrichella have much darker heads.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF8CD8479738FA31FADEFC0C.taxon	description	Figs 137, 373	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF8CD8479738FA31FADEFC0C.taxon	diagnosis	Diagnosis Long hair on head and thorax, particularly in the male, and usually black body enables its separation from the other species of the clitellata group.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF8CD8479738FA31FADEFC0C.taxon	biology_ecology	Host plants Carex sp. (Dyar 1897).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF8CD8479738FA31FADEFC0C.taxon	description	Genetics COI Based on 8 specimens, maximum within-species distance is 0.15 % and the nearest neighbour, diverging by a minimum of 1.38 %, is Euura moerens. Nuclear Based on 4 specimens, maximum within-species distance is 0.43 % (0 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 1.53 %, is Euura fallax.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF8CD8479738FA31FADEFC0C.taxon	distribution	Distribution and material examined Holarctic. Specimens studied are from Canada, Finland, Norway, Sweden, and the United Kingdom.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF8DD8489753FC4AFE6EF9EF.taxon	description	Figs 138 – 141, 375 – 378	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF8DD8489753FC4AFE6EF9EF.taxon	diagnosis	Diagnosis Based on nuclear data, E. clitellata seems to be a complex of 3 – 5 species. Although we have not studied the holotype of clitellatus, based on the description given by Taeger & Blank (1998: 264) it could fit well, for example, with the specimen ZMUO. 040755 that is extensively yellow, including hind tarsi. Specimens with that kind of colouration seem to be restricted to the nuclear cluster containing ZMUO. 040755, which we have called E. clitellata sensu stricto (s. str.) (http: // www. boldsystems. org / pics / LEFIJ / ZMUO. 040755 % 2 B 1599793934. JPG). Generally, it seems that E. clitellata s. str. and the nuclear cluster 3 have yellow or paler hind tarsi compared to nuclear clusters 4 and 5, which have black or darker hind tarsi. Otherwise there seems to be little difference between the clusters and all of them vary widely in colouration (from mostly black to extensively pale) and habitus. There is also a nuclear cluster 2, represented by a single larva (ZMUO. 040880). It is perhaps possible that E. clitellata s. str. and cluster 3 are conspecific, like the clusters 4 + 5, but it is very unlikely based on nuclear genes that E. clitellata s. str. + cluster 3 on one hand is conspecific with the cluster 4 + 5 on the other hand. In Europe, the clusters 3 and 5 seem to be restricted to northern Fennoscandia. For the cluster 4 (including perhaps cluster 5), the earliest available name might be Nematus brachycercus Hartig, 1840. Females of E. clitellata are very similar to E. fallax. If the mesoscutellum is partly pale, then there nevertheless seem still to be small differences in the colour pattern: – mesoscutellum with black midline along its length or pale dots laterally, if almost completely pale then with black dots anteriorly and posteriorly ..................................................................... E. fallax – mesoscutellum completely pale or anteriorly (partly) pale and posteriorly black ........... E. clitellata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF8DD8489753FC4AFE6EF9EF.taxon	materials_examined	Type material examined Lectotype Nematus flaviventris, here designated GERMANY • ♀; northern Germany [according to Hartig 1840: 22]; ZSM, DEI-GISHym 3277. Notes Haris (1997) may have intended to designate this specimen as the lectotype, but according to Stephan M. Blank none of four syntypes was labelled as lectotype and the other labels as described by Haris in the lectotype designation do not exactly fit any of the specimens. Unfortunately, the specimen may be lost. It was not found in the ZSM, but photos of lateral and dorsal views are available. Not studied by Taeger & Blank (1998). Lectotype Nematus leucocarpus GERMANY • ♀; northern Germany [according to Hartig 1840: 22]; ZSM, DEI-GISHym 84485. Notes 8.5 mm. The mesepisternum is completely pale, unlike any other specimen we have seen. Lectotype Nematus brachycercus GERMANY • ♀; northern Germany [according to Hartig 1840: 22]; ZSM, DEI-GISHym 3208. Lectotype Nematus squalidus, here designated RUSSIA – Tatarstan • ♀; Kasan Province; 55.8 ° N, 49.1 ° E; E. Eversmann leg.; ZIN, DEI-GISHym 30060. Notes Best morphological match: e. g., ZMUO. 032426, ZMUO. 039092, ZMUO. 046267, ZMUO. 045459, ZMUO. 063011, DEI-GISHym 31252, DEI-GISHym 84266. Lectotype Nematus cinereus, here designated RUSSIA – Tatarstan • ♂; Kasan Province; 55.8 ° N, 49.1 ° E; E. Eversmann leg.; ZIN, DEI-GISHym 30036. Notes Resembles Nematus kirbyi. Lectotype Nematus contractus, here designated RUSSIA – Tatarstan • ♀; Kasan / Ulyanovsk [Simbirsk] / Orenburg; ZIN, DEI-GISHym 30052. Notes Similar to Nematus kirbyi. Paralectotype Nematus contractus RUSSIA – Tatarstan • ♂; Kasan / Ulyanovsk [Simbirsk] / Orenburg; ZIN, DEI-GISHym 30053. Notes Perhaps Nematinus bilineatus (Klug, 1819). Lectotype Nematus diaphanus, here designated RUSSIA • ♀; Orenburg oblast; 51.8 ° N, 55.1 ° E; E. Eversmann leg.; ZIN, DEI-GISHym 30051. Notes Similar to Nematus kirbyi. Lectotype Nematus fruticum, here designated RUSSIA – Tatarstan • ♂; Kasan Province; 55.8 ° N, 49.1 ° E; E. Eversmann leg.; ZIN, DEI-GISHym 30035. Notes Similar to Nematus kirbyi. Lectotype Nematus umbripennis, here designated RUSSIA – Tatarstan • ♀; Kasan Province; 55.8 ° N, 49.1 ° E; E. Eversmann leg.; ZIN, DEI-GISHym 30054. Notes Similar to Nematus kirbyi. Lectotype Tenthredo (Selandria) umbrosa, here designated RUSSIA – Tatarstan • ♂; Kasan Province; 55.8 ° N, 49.1 ° E; E. Eversmann leg.; ZIN, DEI-GISHym 30048. Notes Similar to Nematus kirbyi. Lectotype Epitactus praecox GERMANY – Nordrhein-Westfalen • ♀; Aachen area; 50.77 ° N, 6.09 ° E; ZSM. Notes Similar to Nematus kirbyi. Lectotype Nematus trisignatus GERMANY – Nordrhein-Westfalen • ♀; Aachen area; 50.77 ° N, 6.09 ° E; ZSM. Lectotype Nematus microps GERMANY – Nordrhein-Westfalen • ♂; Aachen area; 50.77 ° N, 6.09 ° E; ZSM, DEI-GISHym 12485. Holotype Pachynematus infumatus USA – Michigan • ♂; Ingham, Agricultural College; 42.746 ° N, 84.483 ° W; USNM, USNMENT 00778520, http: // n 2 t. net / ark: / 65665 / 322992 bb 4 - e 435 - 4 a 95 - 83 cc- 6 b 7 a 4796 c 66 a. Notes Similar to Nematus kirbyi. Lectotype Pachynematus zaddachi GERMANY – Mecklenburg-Vorpommern • ♂; Kalkhorst; 53.32 ° N, 13.07 ° E; 1 Aug. 1889; F. W. Konow leg.; SDEI, GBIF-GISHym 3875. Notes Similar to Nematus kirbyi. Lectotype Pachynematus glesipennis RUSSIA – Irkutskaja oblast • ♂; Irkutsk; 52.29 ° N, 104.24 ° E; SDEI, GBIF-GISHym 3876. Lectotype Pachynematus foveolatus RUSSIA – Irkutskaja oblast • ♂; Irkutsk; 52.29 ° N, 104.24 ° E; SDEI, GBIF-GISHym 4670. Lectotype Pachynematus lentus GERMANY • ♀; Thüringen; SDEI, GBIF-GISHym 3874. Notes Best morphological fit: DEI-GISHym 21348 or ZMUO. 059768. Lectotype Pachynematus clitellatus var. transigens GERMANY – Nordrhein-Westfalen • ♀; Neuss; 51.20 ° N, 6.69 ° E; ZSM, DEI-GISHym 84486. Holotype Pachynematus truncatus UNITED KINGDOM – England • ♂; Buckinghamshire, Slapton; 52.12 ° N, 1.06 ° W; 26 May 1943; R. B. Benson leg.; BMNH, B. M. TYPEHYM. 1.702. Lectotype Nematus (Pachynematus) omega, here designated SWITZERLAND – Valais • ♂; Ferpècle [Glacier]; 2100 m a. s. l.; 21 – 27 Jun. 1935; J. E. and R. B. Benson; BMNH, B. M. TYPEHYM. 1.701. Notes Most similar to ZMUO. 030823 and DEI-GISHym 12503. Holotype Pachynematus aequalis RUSSIA – Murmansk oblast • ♀; Petsamo [Pechenga], Yläluostari [Luostari]; 69.43 ° N, 31.04 ° E; 5 Jul. 1938; V. J. Karvonen leg.; MZH, http: // id. luomus. fi / GL. 5145. Notes A COI sequence (658 bp) of the holotype is closest to BIOUG 16846 - H 10 (Canada). Most similar to DEI-GISHym 84245, but probably not conspecific. Head pale, only frontal area black; median mesoscutal lobe laterally and posteriorly pale; lateral mesoscutal lobes posterolaterally pale or pale only posterodorsal corners; anterior half of mesoscutellum pale, with or without black line in middle; mesoscutellar appendage black to pale; mesopostnotum pale; abdomen ventrally pale, dorsal half or middle part of mesepisternum pale; metafemur pale, pro- and mesofemur with black ring at base.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF8DD8489753FC4AFE6EF9EF.taxon	biology_ecology	Host plants A large number of genera of Poaceae Barnhart have been recorded as host plants, as well as unspecified species of Juncus L. and Carex L. (Taeger et al. 1998). It is currently impossible to attribute these records to the unresolved complex around E. clitellata, or to E. fallax.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF8DD8489753FC4AFE6EF9EF.taxon	description	Genetics Based on nuclear genes, Euura clitellata as circumscribed here probably contains 3 – 5 species in Europe. Although we treat all these nuclear clusters as E. clitellata, the genetic distances are also summarised separately for the five clusters. Note that we recognize an additional nuclear cluster (Euura clitellata group sp. 1) that we excluded from E. clitellata, because the nuclear sequences are even more distinct and its inclusion would clearly render E. clitellata non-monophyletic. COI Euura clitellata s. str. Based on 26 specimens, maximum within-species distance is 0.76 % and the nearest neighbour, diverging by a minimum of 0 %, is Euura clitellata cluster 4. A secondary COI variant of ZMUO. 040755 is 3.5 % different from the primary variant and is closest to a specimen from Canada at a distance of 1.5 % (09 BBEHY- 0204, the only representative of BOLD: AAI 2591). Cluster 2. Only one sequence available (ZMUO. 040880). The nearest neighbour, diverging by a minimum of 1.37 %, is Euura clitellata (E. clitellata s. str., cluster 5, and clitellata group sp. 1). Cluster 3. Based on 10 specimens, maximum within-species distance is 0.46 % and the nearest neighbour, diverging by a minimum of 0.15 %, is Euura clitellata (E. clitellata s. str. and clitellata group sp. 1). Cluster 4. Based on 26 specimens, maximum within-species distance is 1.37 % and the nearest neighbour, diverging by a minimum of 0 %, is Euura clitellata s. str. Cluster 5. Based on 10 specimens, maximum within-species distance is 0.46 % and the nearest neighbour, diverging by a minimum of 0.15 %, is Euura clitellata group sp. 1. Nuclear Euura clitellata s. str. Based on 19 specimens, maximum within-species distance is 0.65 % (0.42 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.54 %, is Euura clitellata cluster 3. Cluster 2. Only one sequence available. The nearest neighbour, diverging by a minimum of 1.51 %, is Euura clitellata cluster 5. Cluster 3. Based on 10 specimens, maximum within-species distance is 0.47 % (0.21 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.54 %, is Euura clitellata s. str. Cluster 4. Based on 25 specimens, maximum within-species distance is 0.27 % (0.39 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.27 %, is Euura clitellata cluster 5. Cluster 5. Based on 10 specimens, maximum within-species distance is 0.58 % (0.68 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.27 %, is Euura clitellata cluster 4.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF8DD8489753FC4AFE6EF9EF.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Estonia (cluster 4), Finland, France, Germany, Russia, Sweden, and the United Kingdom.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF82D8489743F96BFDAFF853.taxon	description	Figs 142, 379	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF83D84E95ACFEEDFE05F893.taxon	diagnosis	Diagnosis Based on nuclear data, there are two main lineages that tend to look somewhat different. Specimens in one lineage (similar to Nematus einersbergensis Hartig) tend to be smaller and the head is not expanded behind the eyes, unlike in the more typical E. fallax that falls in the second main clade. However, specimens exist which form additional nuclear lineages that look more like einersbergensis (e. g., ZMUO. 032994) or more like fallax (DEI-GISHym 16246). These nuclear lineages are more closely related to each other than some of the lineages in clitellata (which very likely contains more than one species) and could perhaps still belong to single species. Females are very similar to those of E. clitellata, see under that species.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF83D84E95ACFEEDFE05F893.taxon	materials_examined	Type material examined Lectotype Nematus fallax [designated by Lacourt (2000), photos examined] FRANCE – Ile-de-France • ♀; Paris; 48.9 ° N, 2.3 ° E; MRSN, EY 34235. Lectotype Nematus melanocerus GERMANY • ♂; northern Germany [according to Hartig 1840: 22]; ZSM, DEI-GISHym 12497. Lectotype Nematus eupodius GERMANY • ♂; northern Germany [according to Hartig 1840: 22]; ZSM, DEI-GISHym 12495. Lectotype Nematus einersbergensis GERMANY – Niedersachsen • ♀; Einersberg; 51.81 ° N, 10.30 ° E; ZSM, DEI-GISHym 84488. Notes Best morphological match: ZMUO. 032994, ZMUO. 029665, DEI-GISHym 12609. Lectotype Nematus eversmanni RUSSIA – Tatarstan • ♂; Kasan Province; 55.8 ° N, 49.1 ° E; E. Eversmann leg.; ZIN, DEI-GISHym 12486. Notes The penis valve fits with DEI-GISHym 84275. Lectotype Nematus emarginatus GERMANY – Rheinland-Pfalz • ♂; Boppard; 50.22 ° N, 7.57 ° E; ZSM, DEI-GISHym 12496. Lectotype Nematus circumscriptus GERMANY – Nordrhein-Westfalen • ♀; Aachen area; 50.77 ° N, 6.09 ° E; ZSM, DEI-GISHym 12489. Holotype Pachynematus sulcatus UNITED KINGDOM – Scotland • ♂; Perthshire, Killin; 56.47 ° N, 4.32 ° W; 120 m a. s. l.; 31 May – 14 Jun. 1932; R. B. Benson leg.; BMNH, B. M. TYPEHYM. 1.700. Holotype Pachynematus chambersi UNITED KINGDOM – England • ♂; Bedfordshire, Ampthill; 52.03 ° N, 0.49 ° W; 100 m a. s. l.; 17 May 1947; V. H. Chambers leg.; BMNH, B. M. TYPEHYM. 1.699. Notes Best morphological match: DEI-GISHym 84450. Holotype Pachynematus calcicola UNITED KINGDOM – England • ♂; Yorkshire, Pen-y-Ghent; 54.16 ° N, 2.25 ° W; F. W. Edwards and W. H. T. Tams leg.; May 1933; BMNH, B. M. TYPEHYM. 1.698. Holotype Pachynematus angustatus FINLAND – Inari Lapland • ♀; Utsjoki, Outakoski; 69.61 ° N, 25.98 ° E; 22 Jun. 1947; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 3427. Holotype Pachynematus virginalis UNITED KINGDOM – Scotland • ♂; Edinburgh, Duddingston Loch; 55.94 ° N, 3.15 ° W; 2 Jun. 1979; A. Liston leg.; RSME.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF83D84E95ACFEEDFE05F893.taxon	biology_ecology	Host plants Various genera of Poaceae have been recorded as host plants, as well as unspecified species of Juncus and Carex, but it is currently impossible to decide whether these records refer to E. fallax, or the unresolved complex of species around E. clitellata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF83D84E95ACFEEDFE05F893.taxon	description	Genetics COI Based on 38 specimens, maximum within-species distance is 6.08 % and the nearest neighbour, diverging by a minimum of 6.08 %, is Euura clitellata. Nuclear Based on 24 specimens, maximum within-species distance is 1.08 % (0.71 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 1.38 %, is Euura moerens.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF83D84E95ACFEEDFE05F893.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, France, Germany, Portugal, Russia, Sweden, and the United Kingdom.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF84D84F9729F8A7FE02F9FC.taxon	description	Figs 143, 380	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF84D84F9729F8A7FE02F9FC.taxon	diagnosis	Diagnosis Females are most similar to E. moerens. Metatarsomere 1 and metafemur are usually completely or nearly completely black in E. lichtwardti, but usually extensively pale (basal third of metatarsomere 1) in E. moerens. In males, tergum 8 has a distinct apical projection that distinguishes it clearly from E. moerens (absent or indistinct). The penis valves are also distinct from those in E. moerens and the other Euura. In males, sometimes terga 5 – 8 laterally and laterodorsally pale.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF84D84F9729F8A7FE02F9FC.taxon	materials_examined	Type material examined Lectotype Nematus apicalis GERMANY [according to the title of Hartig 1837] • ♀; ZSM, GBIF-GISHym 3196. Lectotype Pachynematus lichtwardti, here designated CZECH REPUBLIC – Sudeten • ♀; Altvater; 50.08 ° N, 17.21 ° E; 12 Jun. 1900; B. Lichtwardt leg.; SDEI, GBIF-GISHym 3872. Lectotype Pachynematus kubesi, here designated CZECH REPUBLIC – Central Bohemia • ♀; Kolin; 50.03 ° N, 15.20 ° E; A. Kubes leg.; SDEI, GBIFGISHym 3873.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF84D84F9729F8A7FE02F9FC.taxon	biology_ecology	Host plants Elytrigia repens (L.) Gould. (Kontuniemi 1965), Calamagrostis spp. (Kangas 1985; Macek et al. 2020).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF84D84F9729F8A7FE02F9FC.taxon	description	Genetics COI Based on 4 specimens, maximum within-species distance is 4.06 % and the nearest neighbour, diverging by a minimum of 4.26 %, is Euura moerens. Nuclear Based on 2 specimens, maximum within-species distance is 0.06 % (0.03 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 1.47 %, is Euura clitellata cluster 5. Based on 3 specimens of NaK (1654 bp), maximum within-species distance is 0.12 % (also 0.12 % when considering haplotypes of ZMUO. 032405).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF84D84F9729F8A7FE02F9FC.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Czech Republic, Finland, Germany, Norway, Sweden, and the United Kingdom.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF85D84C9756F97AFEBDF804.taxon	description	Figs 144, 381	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF85D84C9756F97AFEBDF804.taxon	diagnosis	Diagnosis Females are most similar to E. lichtwardti. Metatarsomere 1 and metafemur are usually extensively pale in E. moerens, but usually completely or nearly completely black E. lichtwardti. In males, the apical projection of tergum 8 is absent or indistinct unlike most other Euura (thus more like most Pristiphora). Penis valves reliably separate E. moerens from the other species.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF85D84C9756F97AFEBDF804.taxon	materials_examined	Type material examined Lectotype Nematus moerens, here designated GERMANY – Nordrhein-Westfalen • ♀; Aachen area; 50.77 ° N, 6.09 ° E; ZSM, DEI-GISHym 88919. Notes According to Taeger & Blank (1998) the lectotype was designated by Haris (1997), but no such designation was made. Lectotype Nematus pygostolus GERMANY – Nordrhein-Westfalen • ♂; Aachen area; 50.77 ° N, 6.09 ° E; ZSM, DEI-GISHym 12488. Lectotype Nematus pleuralis, here designated SWEDEN • ♀; Stockholm; 59.31 ° N, 18.04 ° E; C. H. Boheman leg.; NHRS, NHRS-HEVA 000006326. Lectotype Pachynematus pullus, here designated FRANCE – Champagne-Ardenne • ♀; Charleville-Mézières; 49.76 ° N, 4.72 ° E; 11 May 1895; SDEI, GBIF-GISHym 3882. Holotype Pachynematus torridonensis UNITED KINGDOM – Scotland • Wester Ross, Coire MhicNobuil, near Allt Toll a’Mhaidaich; 57.57 ° N, 5.56 ° W; 150 m a. s. l.; 16 May 1978; A. D. Liston leg.; RSME.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF85D84C9756F97AFEBDF804.taxon	biology_ecology	Host plants Calamagrostis arundinacea (L.) Roth (Kangas 1985), Poa sp. and Festuca sp. (Macek et al. 2020).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF85D84C9756F97AFEBDF804.taxon	description	Genetics COI Based on 8 specimens, maximum within-species distance is 6.75 % and the nearest neighbour, diverging by a minimum of 0.97 %, is Euura clitellata. Nuclear Based on 7 specimens, maximum within-species distance is 0.23 % (0.35 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 1.38 %, is Euura fallax.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF85D84C9756F97AFEBDF804.taxon	distribution	Distribution and material examined Holarctic. Specimens studied are from Finland, France, Germany, Norway, Sweden, and the United Kingdom.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF87D84D975FFEEEFB0AF893.taxon	description	Figs 145, 382	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF87D84D975FFEEEFB0AF893.taxon	diagnosis	Diagnosis The female is most similar to E. vaga, from which it differs by its apically or extensively black-marked metafemur (nearly always completely pale in E. vaga), more elongate valvula 3 in dorsal view, and more or less straight basal part of lamnium (curved outward in E. vaga). Also, the pterostigma is black in E. obducta, but pale in European specimens of E. vaga. Males, which are extremely rare, are best recognised by penis valves. The tergum 8 is deeply invaginated in the middle and the prominent apical projection is distinctly constricted at base, which enables identification of males also externally.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF87D84D975FFEEEFB0AF893.taxon	materials_examined	Type material examined Lectotype Nematus obductus, here designated GERMANY [according to the title of Hartig 1837] • ♀; ZMHB, GBIF-GISHym 2785. Lectotype Nematus conductus, here designated ICELAND • ♀; 1856; Staudinger leg.; ZMHB, dbcac 8 / ZMHB, GBIF-GISHym 2829.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF87D84D975FFEEEFB0AF893.taxon	biology_ecology	Host plants Various genera of Poaceae, such as Poa L., Elymus L., Phleum L. and Dactylis L. (Kangas 1985; own data), and Carex (Macek et al. 2020).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF87D84D975FFEEEFB0AF893.taxon	description	Genetics COI Based on 9 specimens, maximum within-species distance is 2.89 % and the nearest neighbour, diverging by a minimum of 7.26 %, is Euura clitellata. Nuclear Only one sequence available, a female with haplotypes diverging by 0.1 %. The nearest neighbour, diverging by a minimum of 2.89 %, is Euura fallax.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF87D84D975FFEEEFB0AF893.taxon	distribution	Distribution and material examined Holarctic. Specimens studied are from Austria, Canada, Estonia, Finland, France, Germany, Greenland (only genetics), Iceland, Portugal, Sweden, Switzerland, and the United Kingdom.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF87D872974DF8A7FC3AFBB5.taxon	description	Fig. 374 A single male (ZMUO. 035580) from Utsjoki (Finland) is clearly a different species from the others in the group, based on nuclear DNA. The penis valve is not clearly distinguishable from E. clitellata, but externally (colouration and the projection of tergite 8) it is most similar to E. fallax. Of the North American species treated by Ross (1945), ZMUO. 035580 is perhaps most similar (based on the penis valve and the projection of tergite 8) to Euura aurata (Marlatt 1896 a: 91 – 93, 99 – 100) (Pachynematus auratus Marlatt, 1896), but the characters do not seem to fit perfectly. The dominant COI variant belongs to BOLD: ACF 0333 (most European E. clitellata specimens), the second to BOLD: ACM 0632 (North America) and the third is closest (2.4 %) to BOLD: ABX 5515 (North America and some secondary variants of several Finnish specimens of E. clitellata).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF87D872974DF8A7FC3AFBB5.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF87D872974DF8A7FC3AFBB5.taxon	description	Genetics COI Only one sequence available. The nearest neighbour, diverging by a minimum of 0.15 %, is Euura clitellata (nuclear clusters 3 and 5). When secondary intraindividual COI variants of ZMUO. 035580 are also included, maximum within species distance is 2.89 % and the nearest neighbour, diverging by a minimum of 0.15 %, is Euura clitellata (E. clitellata s. str. and nuclear clusters 3 – 5). Nuclear Only one sequence available. The nearest neighbour, diverging by a minimum of 1.43 %, is Euura moerens.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF87D872974DF8A7FC3AFBB5.taxon	distribution	Distribution and material examined Palaearctic. The studied specimen is from northernmost Finland.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB8D8739750FB45FB82FD0B.taxon	description	Figs 147 – 148	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB8D8739750FB45FB82FD0B.taxon	diagnosis	Diagnosis The colouration and the lancet of E. epilosa are most similar to those of E. nigricornis and E. miliaris, but its antenna is distinctly shorter.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB8D8739750FB45FB82FD0B.taxon	materials_examined	Type material examined Holotype Pteronidea epilosa RUSSIA – Irkutskaja oblast • ♀; Irkutsk, Oljhonsk, Popovo; 52.741 ° N, 106.309 ° E; 22 May 1967; B. N. Verzhutskii leg.; collected from Spiraea media; MZH, http: // id. luomus. fi / GL. 5142. Notes Recently discovered in Europe. A single female was collected in Bulgaria in 2022 by E. Heibo close to Spiraea sp. and several larvae on Spiraea media F. Schmidt in Slovakia by A. Lendel (Ladislav Roller, pers com.). Male unknown. The Euura epilosa group includes also E. brachycera (Lindqvist, 1975) (known from Irkutsk oblast and Primorsky Kray, Russia) and possibly Nematus mandshuricus Zhelochovtsev & Zinovjev, 1994 and Euura vastidens (Lindqvist, 1975). Euura epilosa, E. brachycera and N. mandshuricus have been reared from Spiraea, but E. vastidens from Dasiphora fruticosa.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB8D8739750FB45FB82FD0B.taxon	biology_ecology	Host plants Spiraea media (Verzhutskii 1981). One generation per year.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB8D8739750FB45FB82FD0B.taxon	description	Genetics COI Based on 3 specimens, maximum within-species distance is 1.37 % and the nearest neighbour, diverging by a minimum of 6.79 %, is Euura brevivalvis. Nuclear Based on 2 specimens, maximum within-species distance is 0.73 % (0.05 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 3.45 %, is Euura brachycera.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB8D8739750FB45FB82FD0B.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Bulgaria, Russia, and Slovakia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB9D8739792FD4FFE6AFCEE.taxon	description	Includes two species in Europe: E. fahraei (pale) and E. tenuiserra (dark). Euura bicolor (Jakowlew, 1891) from the East Palaearctic also belongs to the group. The species is similar to E. tenuiserra, but the abdomen is ventrally black and the mesepisternum matt (abdomen ventrally pale and mesepisternum smooth in E. tenuiserra).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB9D8709751FC6AFE02FE7D.taxon	description	Figs 149, 383	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB9D8709751FC6AFE02FE7D.taxon	diagnosis	Diagnosis Its almost completely yellowish body and the structure of the lancet (apical sutures concave and overall inclined in basal direction, serrulae flat, setae present) enable identification of the females. Ventrally extensively pale body and shape of the penis valves enable reliable identification also of males.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB9D8709751FC6AFE02FE7D.taxon	materials_examined	Type material examined Lectotype Nematus fåhraei, here designated SWEDEN – Skåne • ♀; Ringsjön; 55.88 ° N, 13.51 ° E; C. G. Thomson leg.; MZLU, MZLU 2017305. Holotype Pteronidea brunnea FINLAND – Uusimaa • ♀; Espoo, Vantaa; 60.25 ° N, 24.90 ° E; 27 May 1967; V. J. Karvonen leg.; MZH, http: // id. luomus. fi / GL. 3466.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB9D8709751FC6AFE02FE7D.taxon	biology_ecology	Host plants Populus tremula.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB9D8709751FC6AFE02FE7D.taxon	description	Genetics COI Based on 5 specimens, maximum within-species distance is 0.61 % and the nearest neighbour, diverging by a minimum of 6.72 %, is Euura bicolor (not known in the West Palaearctic). Nuclear Based on 2 specimens, maximum within-species distance is 0.05 %. The nearest neighbour, diverging by a minimum of 1.46 %, is Euura bicolor.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB9D8709751FC6AFE02FE7D.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Bulgaria, Estonia, Finland, Germany, Russia, Sweden, and the United Kingdom.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBAD8719763F8B8FCD2FDB1.taxon	description	Externally, most species in the group can be confused with members of the E. bipartita group. Females can be difficult to distinguish from members of the E. bipartita group even based on lancets. Based on penis valves, males are easier to distinguish from the E. bipartita group, but penis valves can be similar to members of the melanocephalus, miliaris, vittata, toeniata, and variator groups. Males are not clearly distinguishable from each other based on penis valves and often also not externally. Males of E. flavescens are often ventrally almost completely pale, whereas those of E. dorsata, E. latibasis, E. seriepunctata, and E. serela Prous & Mutanen sp. nov. are (usually?) ventrally darker, but may not always be distinguishable from E. flavescens. Males of E. lienterica (sometimes ventrally rather pale), E. pravus, E. reticulata, and E. squamicauda are usually nearly completely or mostly black, but those of E. pravus tend to be larger (6 – 7 mm, the other species less than 6 mm). Males of E. elongatula, E. pallidinervis, E. pallidior, and E. renei are not known.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBAD870973CFDFDFC7FF8B0.taxon	description	Figs 150, 384	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBAD870973CFDFDFC7FF8B0.taxon	diagnosis	Diagnosis Mostly black head and thorax, dorsally black and ventrally pale abdomen, and lancet (similar to E. fahraei, but possibly ventrally somewhat more concave) enable identification of the females. Penis valves are similar to those of E. fahraei, but externally the males of E. tenuiserra are much darker (mostly black). Females are superficially similar to those of E. humeralis, but their lancets are clearly different.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBAD870973CFDFDFC7FF8B0.taxon	materials_examined	Type material examined Holotype Amauronematus tenuiserra RUSSIA – Karelia • ♀; Vaaseni [Vaziny]; 60.96 ° N, 34.01 ° E; 8 Jun. 1942; V. Karvonen leg.; MZH, http: // id. luomus. fi / GL. 2772. Holotype Pteronidea semipunctata SWEDEN • ♀; Uppland; R. Malaise leg.; NHRS, NHRS-HEVA 000004009.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBAD870973CFDFDFC7FF8B0.taxon	biology_ecology	Host plants Salix pentandra.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBAD870973CFDFDFC7FF8B0.taxon	description	Genetics COI Based on 5 specimens, maximum within-species distance is 3.34 % and the nearest neighbour, diverging by a minimum of 6.08 %, is Euura bicolor (not known in the West Palaearctic). The two sequenced Finnish specimens are identical (minimum of 3.04 % different to the other specimens from Primorsky Kray, Russia), but in one of the specimens two additional secondary COI variants were detected with maximum distance of 1.98 % to the primary variant. Nuclear Based on 4 specimens, maximum within-species distance is 1.2 % (0.1 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 1.17 %, is Euura bicolor.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBAD870973CFDFDFC7FF8B0.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Russia, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBBD8719750FDB9FC10F9BB.taxon	description	Figs 151, 385	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBBD8719750FDB9FC10F9BB.taxon	diagnosis	Diagnosis Nearly completely pale, and thus resembling most specimens of E. flavescens, at least some E. latibasis, and E. seriepunctata. Serrulae of the lancet of E. dorsata are more protruding than in E. flavescens and E. seriepunctata. Euura latibasis might have a shorter lamnium compared to radix (lamnium 1.8 – 1.9 times as long as radix in E. latibasis, about 2.0 – 2.4 times as long in E. dorsata). Euura fuscarima of the E. bipartita group is also similar externally and has a similar lancet. The middle and apical sutures of the lancet of E. fuscarima are perhaps straighter than in E. dorsata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBBD8719750FDB9FC10F9BB.taxon	biology_ecology	Host plants Betula pubescens including ssp. czerepanovii (N. I. Orlova) Hämet-Ahti.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBBD8719750FDB9FC10F9BB.taxon	description	Genetics COI Based on 2 specimens, maximum within-species distance is 0.31 % and the nearest neighbour, diverging by a minimum of 1.67 %, is Euura latibasis. Nuclear Based on 2 specimens, maximum within-species distance is 0 % (0.03 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 2.4 %, is Euura reticulata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBBD8719750FDB9FC10F9BB.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBBD8769724F9BEFD7BFC1A.taxon	diagnosis	Diagnosis Only the holotype is known, which is most similar to Pteronidea boreophila Lindqvist, 1971 (= E. flavescens), but even darker. The serrulae seem to be similar to E. flavescens, but the saw has not been dissected, which would be required to see the characteristic details. Since the specimen is also unusually dark for E. flavescens, we have provisionally treated the species as valid.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBBD8769724F9BEFD7BFC1A.taxon	materials_examined	Type material examined Holotype Alpinematus elongatulus FRANCE – Hautes-Alpes • ♀; Saint-Véran, La Chapelle-de-Clousis [Chapelle Notre Dame de Bon Secours de Clausis]; 44.67 ° N, 6.92 ° E; 2450 m a. s. l.; 12 Jul. 1975; J. Lacourt leg.; CTN, DEIGISHym 20819.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBBD8769724F9BEFD7BFC1A.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBBD8769724F9BEFD7BFC1A.taxon	description	Genetics COI No data. Nuclear No data.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBBD8769724F9BEFD7BFC1A.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from France.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBCD8779720FC5DFD39F882.taxon	description	Figs 166, 386	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBCD8779720FC5DFD39F882.taxon	diagnosis	Diagnosis Females are usually nearly completely pale yellowish like E. dorsata, and at least some E. latibasis and E. seriepunctata, but some specimens of E. flavescens are extensively black. Externally very similar is also E. fuscarima of the E. bipartita group. The best way to identify the species is by examining the lancet. On the dorsobasal part (next to the suture) of the basalmost annulus is a dorsally widening pale area (absent in the other similar species). At least some of the darker specimens (abdomen dorsally mostly black; as in ZMUO. 040671, ZMUO. 041892, ZMUO. 046542, ZMUO. 058829, etc.) may belong to a different species, based on nuclear genes. An available name for such specimens might be Pteronidea boreophila. However, based on individual haplotypes of different nuclear genes, the haplotypes from the same specimen tend to group either with E. lienterica or E. flavescens, suggesting an alternative explanation, that these specimens may be of hybrid origin. A similar pattern has been shown for example in Occidozyga Kuhl & Hasselt, 1822 frogs where extensive gene flow can lead to inflated estimates of species numbers (Chan et al. 2021). In such cases standard distance and phylogenetic methods based on concatenated genes mask the reticulate pattern and misleadingly indicate additional distinct lineages (Chan et al. 2021). Based on the lancet structure, we have identified these specimens (as well as the holotype of boreophila) as E. flavescens.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBCD8779720FC5DFD39F882.taxon	materials_examined	Type material examined Lectotype Nematus flavescens, here designated UNITED KINGDOM – England • ♀; London area; 51 ° N, 0 ° W; BMNH, B. M. TYPE HYM. 1.631. Lectotype Nematus testaceus SCANDINAVIA • ♀; MZLU, MZLU 2017331. Holotype Pteronidea fulvescens RUSSIA – Karelia • ♀; Kenjärvi; 62.126 ° N, 34.011 ° E; 4 Jul. 1942; E. Kangas leg.; MZH, http: // id. luomus. fi / GL. 3500. Notes ~ 8 mm. Best morphological match: DEI-GISHym 21140 (~ 7.0 mm). Holotype Pteronidea variegata FINLAND – Uusimaa • ♀; Helsinki, Munksnäs [Munkkiniemi]; 60.22 ° N, 24.89 ° E; 23 Jun. 1932; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 3559. Holotype Pteronidea boreophila FINLAND – Lapin Lääni • ♀; Kilpisjärvi; 69.04 ° N, 20.81 ° E; 8 Jul. 1966; Karvonen leg.; MZH, http: // id. luomus. fi / GL. 3457. Notes Best morphological match: ZMUO. 030845 (somewhat paler and slightly larger).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBCD8779720FC5DFD39F882.taxon	biology_ecology	Host plants Several different Salix spp., such as S. caprea L., S. phylicifolia, S. myrsinifolia Salisb. (Kangas 1985) and S. viminalis (Weiffenbach 1985).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBCD8779720FC5DFD39F882.taxon	description	Genetics COI Based on 27 specimens, maximum within-species distance is 1.82 % and the nearest neighbour, diverging by a minimum of 0 %, is Euura lienterica. Nuclear Based on 15 specimens, maximum within-species distance is 0.87 % (0.63 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.27 %, is Euura lienterica.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBCD8779720FC5DFD39F882.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Austria, Belgium, Bulgaria, Estonia, Finland, France, Norway, Russia, Sweden, and the United Kingdom.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBDD8749728F8D4FD75FA18.taxon	description	Figs 152, 387	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBDD8749728F8D4FD75FA18.taxon	diagnosis	Diagnosis Females are from nearly completely pale to mostly black dorsally, and pale ventrally. Externally and based on the lancet, most similar to E. dorsata and E. fuscarima (E. bipartita group). Lamnium is 1.8 – 1.9 times as long as radix in E. latibasis (n = 1), but about 2.0 – 2.4 times as long in E. dorsata (n = 2) and 2.3 – 2.8 times as long in E. fuscarima (n = 2), but the difference might not hold for E. latibasis and E. dorsata. The middle and apical sutures of the lancet of E. fuscarima might also be more straight than in E. latibasis. Euura seriepunctata and E. serela sp. nov. have also quite a similar lancet, but the serrulae seem to be less protruding and the lamnium is 2.3 – 2.4 (n = 1) times as long as the radix in E. seriepunctata (the proportions could be similar in E. serela based on one basally damaged lancet).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBDD8749728F8D4FD75FA18.taxon	materials_examined	Type material examined Holotype Pteronidea latibasis FINLAND – Varsinais-Suomi • ♀; Pargas (Parainen); 60.305 ° N, 22.301 ° E; leg. E. Reuter leg,; MZH, http: // id. luomus. fi / GL. 3505. Notes Best morphological fit: ZMUO. 035649.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBDD8749728F8D4FD75FA18.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBDD8749728F8D4FD75FA18.taxon	description	Genetics COI Based on 3 specimens, maximum within-species distance is 0.15 % and the nearest neighbour, diverging by a minimum of 1.67 %, is Euura dorsata. Nuclear Based on 2 specimens, maximum within-species distance is 0 % (0.02 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.33 %, is Euura lienterica.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBDD8749728F8D4FD75FA18.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBED87B973EFA50FBE8FED8.taxon	description	Figs 160 – 162, 164 – 165, 388	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBED87B973EFA50FBE8FED8.taxon	diagnosis	Diagnosis Most similar to E. reticulata. The head of E. lienterica is usually more square-shaped in dorsal view and longer in lateral view, the pterostigma (usually?) paler, and the mesepisternum is smooth, whereas in E. reticulata the head is more rectangular in dorsal view or shorter in lateral view, the pterostigma darker, and the mesepisternum is usually slightly matt. Based on extensive sequencing data, the colouration (mostly black to mostly pale) and size (4.5 – 6.5 mm) varies remarkably in E. lienterica females. Lancets are also rather variable (Figs 160 – 162, 164 – 165). Female 4.5 – 6.5 mm. Head extensively pale around eyes to nearly black; labrum, clypeus, and supraclypeal area pale; flagellum black to nearly completely pale; thorax nearly completely pale to black; pronotum and tegula completely pale to partly pale; pterostigma pale yellowish; metafemur completely pale to nearly completely black; metatibia and - tarsi nearly completely pale to extensively dark brown; abdomen dorsally mostly black, ventrally completely pale to nearly completely black. Mesepisternum (usually?) smooth. Middle annuli of lancet usually somewhat S-shaped, basalmost annulus straight. Male 4.5 – 5.5 (6.0?) mm. Body mostly black. Head partly brown around eyes to completely black; labrum, clypeus, and supraclypeal area mostly black to mostly pale; flagellum black to slightly pale ventrally; thorax black; pronotum and tegula extensively pale to completely black; pterostigma yellowish or brownish; metafemur extensively pale to nearly completely black; metatibia and - tarsi nearly completely pale to extensively dark brown; abdomen dorsally black, ventrally black to mostly pale; sternum 9 completely pale to nearly completely black. Pteronidea vaccinii is morphologically not distinguishable from E. lienterica, but the collecting locality is unusually far South (southern Finland) whereas all other specimens have been collected above or close to the treeline in the North. A specimen of E. lienterica (PR. 603 VV, not sequenced) has been reared from Betula nana, and Vaccinium has been reported for E. reticulata (Kontuniemi 1960), a similar species living in the same habitats as E. lienterica. Our own observations suggest that E. lienterica could feed on Vaccinium (see below) and that E. reticulata could feed on Salix, Betula, and Vaccinium (see discussion under that species). Whether E. lienterica can feed both on Betula and Vaccinium (and perhaps also on Salix), needs further investigation.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBED87B973EFA50FBE8FED8.taxon	materials_examined	Type material examined Lectotype Nematus lientericus, here designated RUSSIA – Novaja Zemlya • ♀; Matotschkin Scharr [Matochkin Strait]; 73.3 ° N, 55.6 ° E; 1875; NHRS, NHRS-HEVA 000006473. Notes Best morphological fit: DEI-GISHym 21408. Lectotype Nematus parvulus, here designated RUSSIA – Nenets Autonomous Okrug • ♀; Vaygach Island; 69.970 ° N, 59.674 ° E; 1875; NHRS, NHRS-HEVA 000006479. Paralectotype Nematus parvulus RUSSIA – Nenets Autonomous Okrug • 1 ♀; same data as for lectotype; NHRS, NHRS-HEVA 000006478. Notes Head of NHRS-HEVA 000006478 is extensively brown around eyes; thorax, abdomen and metafemora black; short antenna. NHRS-HEVA 000006479 is somewhat paler. Best morphological matches: PR. 603 VV and DEI-GISHym 12558. Lectotype Pontania tenuitarsis, here designated NORWAY – Troms • ♀; Tysfjorden; 68.204 ° N, 16.080 ° E; E. Strand leg.; SDEI, GBIF-GISHym 3867. Notes 18 – 19 serrulae. Holotype Amauronematus alberich NORWAY – Bear Island (Bjørnøya) • ♀; Nordhama; 74.441 ° N, 19.040 ° E; 28 Jul. 1932; G. C. L. Bertram and D. Lack leg.; BMNH, B. M. TYPEHYM. 1.419. Holotype Pteronidea vaccinii FINLAND – Häme • ♀; Pälkäne; 61.335 ° N, 24.272 ° E; 7 Jun. 1963; J. Kangas leg.; MZH, http: // id. luomus. fi / GL. 3597. Notes 18 serrulae, 5 mm. Head shape most similar to DEI-GISHym 21408. Holotype Pteronidea facialis FINLAND – Inari Lapland • ♀; Inari; 68.911 ° N, 27.031 ° E; 2 Jul. 1965; V. J. Karvonen leg.; MZH, http: // id. luomus. fi / GL. 3564. Notes 6.5 mm. Holotype Pteronidea carinata FINLAND – Lapin Lääni • ♀; Kilpisjärvi; 69.04 ° N, 20.81 ° E; 5 Jul. 1950; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 3568. Notes 5.5 mm.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBED87B973EFA50FBE8FED8.taxon	biology_ecology	Host plants Vaccinium uliginosum L. based on reared type specimens of Pteronidea vaccinii, which we treat as E. lienterica. One larva (ZMUO. 064842) was reared ex ovo from V. myrtillus L., but it died in the second or third instar although V. uliginosum was also offered, indicating a suboptimal host or unsuitable rearing conditions. We have identified a specimen (PR. 603 VV, mostly black, lancet most similar to sequenced DEI-GISHym 12555) reared from Betula nana also as E. lienterica. At this point it remains unclear which is the preferred host, or whether multiple host plants are accepted (which could be similar to E. reticulata), or if more than one species of sawfly is involved. Although adults can be very common in arctic habitats, we have not collected any larvae in the field, which probably indicates that the host plants are low-growing Vaccinium, Betula, and / or dwarf Salix, which are much more difficult to collect from than taller plants.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBED87B973EFA50FBE8FED8.taxon	description	Genetics COI Based on 31 specimens, maximum within-species distance is 1.82 % and the nearest neighbour, diverging by a minimum of 0 %, is Euura flavescens. Nuclear Based on 27 specimens, maximum within-species distance is 1.2 % (0.86 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.27 %, is Euura flavescens.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFBED87B973EFA50FBE8FED8.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Norway, Russia, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB1D87B9720FE9FFD75F9DE.taxon	description	Fig. 156	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB1D87B9720FE9FFD75F9DE.taxon	diagnosis	Diagnosis Its large size (9 – 10 mm), short antenna and mostly black body distinguish this species from the others in the E. flavescens group. The lancet is not distinguishable from E. renei and E. serela sp. nov., but these species are smaller (5.5 – 6.8 mm) and much paler. Male unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB1D87B9720FE9FFD75F9DE.taxon	materials_examined	Type material examined Syntype Pteronidea pallidinervis RUSSIA – Karelia • ♀; Kestenga, Mäntytunturi; 66.323 ° N, 30.067 ° E; 28 Jun. 1935; G. J. Kerrich leg.; MZH, http: // id. luomus. fi / GL. 3516. Notes Largely destroyed: parts of thorax and abdomen, two hind wings, one mid leg, and parts of both hind legs remain. Interpretation of the species is largely based on the possible syntype ♀ from Utsjoki (below). Possible syntype Pteronidea pallidinervis FINLAND – Inari Lapland • ♀; Utsjoki; 69.91 ° N, 27.03 ° E; W. Hellén leg.; MZH, http: // id. luomus. fi / GP. 110177.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB1D87B9720FE9FFD75F9DE.taxon	biology_ecology	Host plants Unknown. One of the type specimens was collected from Betula nana (Hellén 1951 b).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB1D87B9720FE9FFD75F9DE.taxon	description	Genetics COI No data. Nuclear No data.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB1D87B9720FE9FFD75F9DE.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB1D8789758F999FD75FCE6.taxon	description	Fig. 153	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB1D8789758F999FD75FCE6.taxon	diagnosis	Diagnosis Nearly completely pale like E. dorsata, most E. flavescens, at least some E. latibasis, E. seriepunctata, and E. fuscarima (E. bipartita group). The lancet does not seem to be distinguishable from E. latibasis (ZMUO. 035649) and is similar also to E. fuscarima, but the mesepisternum is slightly matt and head shape is similar to E. reticulata (antero-posteriorly contracted) in E. pallidior. Male unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB1D8789758F999FD75FCE6.taxon	materials_examined	Type material examined Holotype Amauronematus pallidior RUSSIA – Karelia • ♀; Paanajärvi; 66.3 ° N, 30.1 ° E; 200 m a. s. l.; 16 Jun. 1917; R. Frey leg.; MZH, http: // id. luomus. fi / GL. 2752.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB1D8789758F999FD75FCE6.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB1D8789758F999FD75FCE6.taxon	description	Genetics COI No data. Nuclear No data.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB1D8789758F999FD75FCE6.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB2D8799741FC71FAFDFCF3.taxon	description	Figs 154, 389	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB2D8799741FC71FAFDFCF3.taxon	diagnosis	Diagnosis A rather large species (females 6.5 – 8.0 mm, males 6.0 – 7.0 mm) whose females are usually extensively pale. The serrulae of the lancet are most similar to E. flavescens, but a pale area on the dorsobasal part (next to the suture) of the basalmost annulus is missing in E. pravus. Externally rather similar to E. renei, but the median mesoscutal lobe has a large triangular black fleck (pale in E. renei) and antennae are black in E. pravus (ventrally pale in E. renei). Female 6.5 – 8.0 mm. Head extensively to mostly pale; labrum, clypeus and supraclypeal area pale; flagellum black; thorax dorsally black to extensively pale, ventrally extensively or nearly completely pale; pterostigma uniformly pale or with dark margins; abdomen dorsally mostly black, ventrally mostly black to completely pale; metafemur and metatibia pale; hind tarsus black or brown; mesepisternum distinctly or slightly matt; claws bifid; valvula 3 rather truncate in lateral view (as in E. brevivalvis). Male 6.0 – 7.0 mm. Head extensively pale around eyes to nearly completely black; labrum pale; clypeus slightly or extensively pale; supraclypeal area black or pale; thorax black; pronotum and tegula black to extensively pale; pterostigma pale with dark margins; metafemur extensively black to completely pale; metatibia pale; hind tarsus black or brown; abdomen dorsally nearly completely black, ventrally black or slightly pale; sternum 9 pale; mesepisternum distinctly or slightly matt; claws bifid; apical projection of tergum 8 small, about as broad as long or broader than long.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB2D8799741FC71FAFDFCF3.taxon	materials_examined	Type material examined Lectotype Amauronematus pravus ESTONIA • ♀; Dorpat [Tartu]; 58.372 ° N, 26.721 ° E; SDEI, GBIF-GISHym 3866. Lectotype Amauronematus torneensis, here designated SWEDEN – Torne Lappmark • ♀; Torneträsk; 68.22 ° N, 19.74 ° E; 400 m a. s. l.; R. Malaise leg.; NHRS, NHRS-HEVA 000003944.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB2D8799741FC71FAFDFCF3.taxon	biology_ecology	Host plants Betula pubescens (Tenow 1963), B. nana (Vikberg 1982).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB2D8799741FC71FAFDFCF3.taxon	description	Genetics COI Based on 7 specimens, maximum within-species distance is 0.16 % and the nearest neighbour, diverging by a minimum of 1.67 %, is Euura flavescens. Nuclear Based on 5 specimens, maximum within-species distance is 0.12 % (0.08 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 1.06 %, is Euura lienterica.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB2D8799741FC71FAFDFCF3.taxon	distribution	Distribution and material examined Holarctic. Specimens studied are from Canada (only genetics), Estonia, Finland, Norway, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB3D879975DFC47FD59F86F.taxon	description	Fig. 157	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB3D879975DFC47FD59F86F.taxon	diagnosis	Diagnosis Most similar to E. lienterica, E. pravus, E. reticulata, and E. serela sp. nov. Sutures of the lancet tend to be somewhat S-shaped in E. lienterica, but are more or less straight in E. renei. Median mesoscutal lobe has a large triangular black fleck in E. pravus and E. serela, but is completely or nearly completely pale in E. renei. Black antennae in E. pravus can further help to distinguish it from E. renei (ventrally pale). Euura reticulata is usually darker and smaller than E. renei, but can be of similar size and colouration, in which case the head shape (antero-posteriorly contracted E. reticulata) could help to separate the species. 6.0 – 6.8 mm; antennae as long as costa or shorter; lamnium 2.8 – 2.9 times as long as radix.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB3D879975DFC47FD59F86F.taxon	biology_ecology	Host plants Perhaps Salix lapponum, if the reared specimen PR. 607 VV is conspecific with DEI-GISHym 12067.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB3D879975DFC47FD59F86F.taxon	description	Genetics COI Only one sequence available. The nearest neighbour, diverging by a minimum of 0.15 %, is Euura flavescens. Nuclear Only one sequence available, a female with haplotypes diverging by 0.27 %. The nearest neighbour, diverging by a minimum of 0.75 %, is Euura seriepunctata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB3D879975DFC47FD59F86F.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland (if the specimen PR. 607 VV reared from Salix lapponum is correctly identified), Norway, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB4D87C973FFEEEFAE8FC98.taxon	description	Figs 159, 390	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB4D87C973FFEEEFAE8FC98.taxon	diagnosis	Diagnosis Females vary from mostly black to mostly pale and 4.5 – 6.5 mm. See discussion under the similar species E. lienterica and E. renei for distinguishing characters. Female 4.5 – 6.5 mm. Head extensively pale around eyes to nearly black; labrum, clypeus, and supraclypeal area pale; flagellum black to partly pale; thorax nearly completely pale to mostly black; pronotum and tegula completely pale to partly pale; pterostigma brown; metafemur completely pale to mostly brown; metatibia and - tarsi nearly completely pale to extensively brown; abdomen dorsally mostly black, ventrally completely pale to nearly completely black. Mesepisternum usually slightly matt. Middle annuli of saw straight. Lamnium 2.4 – 2.8 times as long as radix. A small (4.5 mm) and very dark female specimen which has been sequenced is for example ZMUO. 041895. Male 4.5 – 5.5 (6.0?) mm. Body (usually?) nearly completely black. Labrum pale to black; pterostigma brown or dark brown; metafemur nearly completely black; metatibia and - tarsi nearly pale brown to dark brown; sternum 9 extensively pale to black.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB4D87C973FFEEEFAE8FC98.taxon	materials_examined	Type material examined Lectotype Nematus arcticus, here designated SWEDEN • ♀; Dalarna alpina; C. H. Boheman leg.; MZLU, MZLU 2017307. Lectotype Nematus reticulatus, here designated	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB4D87C973FFEEEFAE8FC98.taxon	materials_examined	RUSSIA – Novaja Zemlya • ♀; Matotschkin Scharr [Matochkin Strait]; 73.3 ° N, 55.6 ° E; 1875; NHRS, NHRS-HEVA 000006452. Paralectotypes Nematus reticulatus RUSSIA – Novaja Zemlya • 3 ♀♀; Matotschkin Scharr [Matochkin Strait]; 73.3 ° N, 55.6 ° E; 1875; NHRS, NHRS-HEVA 000006448 to NHRS-HEVA 000006450. Notes Heads of the lectotype and paralectotype HEVA 000006450 look more like E. lienterica, but the mesepisternum appears slightly matt. The heads of the other two syntypes are missing. Setae of the lancet of the type specimens seem to be somewhat different (particularly: fewer setae on the basalmost annular suture) from sequenced specimens. Lectotype Nematus morionellus, here designated RUSSIA – Novaja Zemlya • ♀; Matotschkin Scharr [Matochkin Strait]; 73.3 ° N, 55.6 ° E; 1875; NHRS, NHRS-HEVA 000006451. Notes This is a very dark specimen of E. reticulata (lancet; identified as such) or E. lienterica (head) (antenna missing). Lectotype Nematus mysticus, here designated RUSSIA – Novaja Zemlya • ♀; Besimannija bay [Bezimyannaya Bay]; 72.86 ° N, 53.59 ° E; 1875; NHRS, NHRS-HEVA 000006471 Lectotype Nematus anceps, here designated RUSSIA • ♀; Novaja Zemlya; 1875; NHRS, NHRS-HEVA 000006467. Notes Rather dark (e. g., mesepisternum). Lancet looks more like E. reticulata and mesepisternum seems matt, but the head looks more like E. lienterica. Lectotype Nematus occipitalis, here designated RUSSIA • ♀; Novaja Zemlya; 1875; NHRS, NHRS-HEVA 000006453. Notes It is not clear whether this specimen belongs to E. reticulata or E. lienterica. Holotype Pontania forsiusi FINLAND – Fjell-Lappland • ♀; Kittilä; 67.7 ° N, 25.0 ° E; R. Krogerus leg.; ZSM, GBIF-GISHym 3284. Holotype Amauronematus alsius UNITED KINGDOM – Scotland • Cairngorm Mts, Lairig Ghru; 57.09 ° N, 3.69 ° W; above 610 m a. s. l.; 10 Jun. 1934; R. B. and J. E. Benson leg.; BMNH, B. M. TYPEHYM. 1.640.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB4D87C973FFEEEFAE8FC98.taxon	biology_ecology	Host plants We reared and sequenced three larvae, one each on Salix sp., Vaccinium uliginosum, and Betula nana. The larvae are likely offspring of a female (ZMUO. 067423) for which these plants were simultaneously offered, although we did not observe the female ovipositing and the larvae were discovered 16 days later. The larvae are probably sisters, because they are genetically almost identical. The three larvae developed slowly, the last one was preserved in alcohol 1.5 months after it was found, but appeared to be still in the feeding stage. Another female (PR. 604 VV, not sequenced) oviposited in S. herbacea and S. polaris Wahlenb.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB4D87C973FFEEEFAE8FC98.taxon	description	Genetics COI Based on 20 specimens, maximum within-species distance is 3.8 % and the nearest neighbour, diverging by a minimum of 0.61 %, is Euura seriepunctata. Nuclear Based on 16 specimens, maximum within-species distance is 0.48 % (0.39 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.88 %, is Euura renei.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB4D87C973FFEEEFAE8FC98.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Norway, Russia, Sweden, and the United Kingdom.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB6D87C9732FCDFFC10F859.taxon	description	Figs 155, 391	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB6D87C9732FCDFFC10F859.taxon	diagnosis	Diagnosis Female Are (usually?) nearly completely pale, see differences discussed under similar species (E. dorsata, E. flavescens, E. latibasis, and E. serela sp. nov.). Lamnium 2.3 – 2.4 (n = 1) times as long as radix. Male. Head extensively pale around eyes; flagellum black or ventrally pale; thorax dorsally black or slightly pale, ventrally nearly completely pale to black; abdomen dorsally black, ventrally extensively pale; legs mostly pale, hind tarsi black.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB6D87C9732FCDFFC10F859.taxon	materials_examined	Type material examined Lectotype Pteronidea seriepunctata, here designated SWEDEN – Torne Lappmark • ♀; Torneträsk; 68.22 ° N, 19.74 ° E; 400 m a. s. l.; R. Malaise; NHRS, NHRS-HEVA 000003963.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB6D87C9732FCDFFC10F859.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB6D87C9732FCDFFC10F859.taxon	description	Genetics COI Based on 6 specimens, maximum within-species distance is 0.31 % and the nearest neighbours, diverging by a minimum of 0.61 %, are Euura flavescens and E. renei. Nuclear Based on 5 specimens, maximum within-species distance is 0.08 % (0 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.7 %, is Euura serela sp. nov.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB6D87C9732FCDFFC10F859.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB7D87D9735FEEFFB8DFAF6.taxon	description	Figs 167, 392	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB7D87D9735FEEFFB8DFAF6.taxon	diagnosis	Diagnosis Females (5.5 – 6.5 mm) are externally very similar to darker specimens of E. lienterica and many species in the bipartita group, but valvula 3 is orientated distinctly dorsally. Separation of males from darker specimens of the other flavescens group species is not clear. Contrary to the original description, the pterostigma is hardly bicolored.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB7D87D9735FEEFFB8DFAF6.taxon	materials_examined	Type material examined Holotype Pteronidea caudalis SWEDEN – Torne Lappmark • ♀; Torneträsk; 68.22 ° N, 19.74 ° E; 400 m a. s. l.; R. Malaise leg.; NHRS, NHRS-HEVA 000003965.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB7D87D9735FEEFFB8DFAF6.taxon	biology_ecology	Host plants Salix lanata L. based on three females (two of them sequenced) ovipositing in the male catkins. A sequenced larva (ZMUO. 042092) was collected from Salix sp. where S. lanata was present.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB7D87D9735FEEFFB8DFAF6.taxon	description	Genetics COI Based on 5 specimens, maximum within-species distance is 0.15 % and the nearest neighbour, diverging by a minimum of 5.47 %, is Euura dorsata. Nuclear Based on 5 specimens, maximum within-species distance is 0.13 % (0.2 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 1.65 %, is Euura reticulata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB7D87D9735FEEFFB8DFAF6.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Norway, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB7D8609704FA41FD75F93D.taxon	description	urn: lsid: zoobank. org: act: B 19 DC 2 EB- 4225 - 4287 - B 14 D-E 71 F 41 C 0 A 562 Figs 81 – 82, 158, 393	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB7D8609704FA41FD75F93D.taxon	diagnosis	Diagnosis Most similar to E. latibasis, E. renei, and E. seriepunctata. Serrulae in E. latibasis may be more protruding than in serela sp. nov. Lamnium of E. serela (although base of the lancet is damaged in the only available specimen) may be similar to those of E. renei and E. seriepunctata (more than 2.3 times as long as radix), while lamnium is 1.8 – 1.9 times as long as radix in E. latibasis. Black hind tarsi in E. latibasis and E. renei might help to separate them from E. serela (pale hind tarsi). Euura renei has a pale median mesoscutal lobe and extensively black abdomen dorsally, whereas the median mesoscutal lobe of E. serela has a large triangular black fleck and the abdomen is more extensively pale. Euura seriepunctata may be overall paler (nearly completely pale, except for dorsal black dots or line on the abdomen) than E. serela. However, as only one female of E. serela and a few (E. latibasis, E. renei) or small numbers (E. seriepunctata) of specimens of the other species are known, the mentioned differences between the species might be even weaker.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB7D8609704FA41FD75F93D.taxon	etymology	Etymology The species name, a noun in apposition, is a combination of the first letters of the names of the most similar species (se riepunctata, re nei, la tibasis).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB7D8609704FA41FD75F93D.taxon	materials_examined	Type material Holotype FINLAND – Inari Lapland • ♀; Utsjoki, Ailegas; 69.877 ° N, 27.065 ° E; 6 Jul. 2018; M. Mutanen, N. Mutanen and A. Mutanen leg.; ZMUO, ZMUO. 035752. Paratype FINLAND – Lapin Lääni • 1 ♂; Pöyrisjärvi; 68.673 ° N, 23.859 ° E; 17 Jul. 2015; M. Mutanen leg.; ZMUO, ZMUO. 028330.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB7D8609704FA41FD75F93D.taxon	description	Description Female holotype (ZMUO. 035752) Body 5.5 mm. Colour mostly pale. Mandibles reddish-brown at apex; antennomeres 1 – 2 somewhat darkened; maxilla (except palps), dorsal dentorial maculae and area around and between ocelli brown or black; eyes black; propleuron, prosternum, anterior triangle on median mesoscutal lobe, lateral mesoscutal lobe anteriorly and posteriorly, mesoscutellar appendage centrally, and mesepisternum ventrally brown or black; mesepimeron somewhat darkened; metapleuron partly black; metanotum (except anterolateral corners) black; coxae basally slightly black; abdominal terga 1 – 7 centrally brown or black and with brown or black dots laterally. Clypeus deeply emarginate; frontal area between antennae raised, angulate; postocellar area about 2.5 times as broad as long; antenna somewhat longer than costa; mesepisternum smooth; claws bifid; valvula 3 in dorsal view not or only slightly tapering, slightly longer than broad, without posterior invagination. Lancet with 18 serrulae; lamnium distinctly longer than radix; serrulae triangular with numerous microdenticles, not strongly protruding, and with indistinct cypsellae; hair-like setae mostly (except on basalmost and some apical annuli) longer than half of annulus length, absent on apical 3 annuli. Male paratype (ZMUO. 028330) Body 5 mm. Colour mostly black. Labrum pale; labial and maxillary palps brown; mandibles reddish-brown at apex, basally pale; clypeus mostly pale; supraclypeal area slightly pale; orbits ventrally and dorsally pale; pronotum posteriorly extensively pale; tegula pale; all tibiae and tarsomere 1 or tarsomeres 1 – 3 of fore and middle legs pale; hind tarsus brown or slightly pale; apical half to two-thirds of femora pale; trochanters and trochantelli slightly to extensively pale; coxae apically pale; pterostigma and costa brown; sternum 9 and tergum 8 posteriorly (except projection in middle) pale. Clypeus distinctly emarginate; frontal area between antennae raised, angulate; postocellar area about 2.5 times as broad as long; antenna about as long as costa and pterostigma combined; mesepisternum smooth; claws bifid; projection of tergum 8 distinct, about as long as broad and with truncate apex.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB7D8609704FA41FD75F93D.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB7D8609704FA41FD75F93D.taxon	description	Genetics COI Specimens belong to BOLD: ADD 3400. Based on 2 specimens, maximum within-species distance is 0.15 % and the nearest neighbours, diverging by a minimum of 2.89 %, are Euura flavescens, E. pravus, and E. reticulata. Nuclear Only one sequence available, a female with haplotypes diverging by 0.06 %. The nearest neighbour, diverging by a minimum of 0.7 %, is Euura seriepunctata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFB7D8609704FA41FD75F93D.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFAAD860976DF93DFD43F856.taxon	description	The group is defined based on its characteristic claw shape (the part between the apical and subapical tooth forming a semicircle) and genetic data. We do not recognize the European and Nearctic species as separate (see below under Euura gregaria). Euura evenensis (Zhelochovtsev, 1981) from Magadan oblast may belong to this group (Zhelochovtsev & Zinovjev 1981), but this requires confirmation. Euura evenensis was described based only on males and it does not seem to be conspecific with E. gregaria (males 3.0 – 4.5 mm) as it is larger (5 – 7 mm).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFABD8669754FEEEFC2BFDB2.taxon	description	Figs 188, 417	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFABD8669754FEEEFC2BFDB2.taxon	diagnosis	Diagnosis Its colouration (at least labrum, clypeus, tegula, legs, and abdomen ventrally pale), size (female 4.5 – 5.5 mm, male 3.0 – 4.5 mm), and characteristic shape of the subapical tooth of claws (far removed from apical tooth, about as long as apical tooth, and area between the teeth forming a semicircle) help in identifying the species. In the male, the combination of black pronotum (posteriorly pale in female) and pale tegula further helps in recognizing the species. Size (1 mm) and shape of the penis valve is most similar to that in the E. dolichura group (0.7 – 0.8 mm) and E. microphyes (0.8 mm), but its claws and colouration should enable separation of E. gregaria from these taxa. We do not consider the small differences between gregarius and dentatus listed by Wong (1967) to be significant and treat them as synonymous. While COI divergence between one North American (USA) specimen and Finnish specimens is 3.3 – 4.4 % (810 bp) or 2.1 – 5.2 % (420 – 423 bp of overlapping barcoding region), the nuclear divergence is only 0.2 % (based on 1774 bp of NaK and EF 1 a F 2), corresponding to an average haplotype divergence for Euura female individuals. Female 4.5 – 5.5 mm. Head black or extensively brown around eyes, antenna black, labrum and clypeus pale; thorax black, pronotum black, tegula pale; pterostigma pale; abdomen dorsally black, ventrally pale, valvula 3 black; legs nearly entirely pale, except brown hind tarsi and apex of hind tibia. Claws with large subapical tooth, forming almost a semicircle with curved apical tooth; valvula 3 in dorsal view short and gradually tapering. Male 3.0 – 4.5 mm. Differences from female: similar to female, but sometimes also the mesepisternum is pale and partly the abdomen dorsally.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFABD8669754FEEEFC2BFDB2.taxon	materials_examined	Type material examined Lectotype Pachynematus dentatus, here designated FINLAND – Uusimaa • ♀; Helsinki, Munksnäs [Munkkiniemi]; 60.22 ° N, 24.89 ° E; 28 Jul. 1937; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 2443.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFABD8669754FEEEFC2BFDB2.taxon	biology_ecology	Host plants Salix phylicifolia (Lindqvist 1937), S. myrsinifolia, S. pentandra.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFABD8669754FEEEFC2BFDB2.taxon	description	Genetics COI Based on 5 specimens, maximum within-species distance is 4.41 % and the nearest neighbour, diverging by a minimum of 6.28 %, is Euura salicis. When secondary intraindividual COI variants are also included, maximum within-species distance is 5.32 % and the nearest neighbour, diverging by a minimum of 6.08 %, is E. salicis. A specimen from North America (E 4) is 2.1 – 5.2 % different from the European specimens (based on 420 – 423 bp of overlapping barcoding region). Nuclear Based on 2 specimens, maximum within-species distance is 0.03 % (0.02 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 2.49 %, is Euura jugicola.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFABD8669754FEEEFC2BFDB2.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, and the USA.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFACD866975CFD86FCCCFBD4.taxon	description	The group is mostly defined based on genetics, because the species are very similar in morphology. The penis valves are not clearly distinguishable from those of the miliaris group, or E. anthracina and E. hyperborea. Although males of not all species in the miliaris group are known for certain, their antennae seem to be longer than the costa and pterostigma, while the antennae are about as long as the costa and pterostigma in the melanocephalus group. Euura hyperborea males are darker (black pronotum, tegula, and sterna) and have longer hair on the head and thorax than in the melanocephalus group. Males of E. anthracina might not be distinguishable from those of the melanocephalus group species with a pale pterostigma (E. cadderensis, E. ferruginea, E. kangasi). Based on the lancets and valvula 3, females are most similar to those of E. anthracina, E. hyperborea, and E. distinguenda, but can be distinguished from these species by paler colouration (extensively pale yellowish abdomen and often extensively pale thorax). We recognize five species in the group, two of which have a black pterostigma (E. bohemani and E. melanocephalus), although the males of E. cadderensis, E. ferruginea and E. kangasi can also have a rather dark pterostigma.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFACD867973EFB64FBD4FB12.taxon	description	Figs 189, 418	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFACD867973EFB64FBD4FB12.taxon	diagnosis	Diagnosis Black pterostigma, lancet (radix shorter than lamnium, 19 – 20 serrulae), and colouration of the abdomen (mostly yellowish or reddish with narrowing medio-dorsal black line) distinguish the females from the other Euura. Similar is also Nematus umbratus, which has fewer serrulae (13 – 16 (17? )) and a different colour pattern of the abdomen. Males might not always be distinguishable from those of E. melanocephalus if colouration of mesepisternum is not stable (black in E. bohemani, dorsally pale in E. melanocephalus). It might not always be possible either to distinguish the males from those of E. cadderensis, E. ferruginea and E. kangasi, which can have a rather dark pterostigma.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFACD867973EFB64FBD4FB12.taxon	materials_examined	Type material examined Lectotype Nematus bohemani, here designated SWEDEN • ♀; Lapponia Media [central Lapland]; C. H. Boheman leg.; MZLU, MZLU 2017315. Lectotype Pteronidea pseudonotabilis, here designated FINLAND – Uusimaa • ♀; Karislojo [Karjalohja]; 60.243 ° N, 23.723 ° E; R. Forsius leg.; ZSM, GBIFGISHym 3389. Lectotype Pteronidea pseudonotabilis var. t-magnum, here designated RUSSIA • ♀; Kamchatka oblast; R. Malaise leg.; NHRS, NHRS-HEVA 000003996. Holotype Pteronidea fuscinervis FINLAND – Häme • ♀; Pälkäne; 61.335 ° N, 24.272 ° E; 15 Jun. 1958; J. Kangas leg.; MZH, http: // id. luomus. fi / GL. 3429.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFACD867973EFB64FBD4FB12.taxon	biology_ecology	Hosts plants Salix spp., including S. caprea, S. fragilis, S. pentandra, S. phylicifolia L. (Kangas 1985), S. myrsinifolia (Kontuniemi 1960).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFACD867973EFB64FBD4FB12.taxon	description	Genetics COI Based on four specimens, maximum within-species distance is 0.3 % and the nearest neighbour, diverging by a minimum of 1.82 %, is Euura ferruginea. Nuclear Only one sequence is available. The nearest neighbour, diverging by a minimum of 0.83 %, is Euura ferruginea.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFACD867973EFB64FBD4FB12.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Estonia, Finland, Russia, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFADD8649737FB24FC2EF9A8.taxon	description	Figs 190, 419	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFADD8649737FB24FC2EF9A8.taxon	diagnosis	Diagnosis Possibly not morphologically distinguishable from E. ferruginea. Serrulae may be more protruding in E. cadderensis than in E. ferruginea, although variability at least within E. ferruginea can make the difference weak to non-existent. Euura kangasi is also very similar, but may have black hind tarsi which seem to be paler in E. cadderensis and E. ferruginea. Euura ferruginea can be rather dark (abdomen dorsally and thorax completely or nearly completely black) which might not be the case for E. cadderensis females. Based on the host (Betula) and nuclear data, we keep E. cadderensis as a distinct species. The lectotype of Pteronidea macroserrata is also the lectotype of Amauronematus moricei. Lindqvist (1943) examined this specimen as well as a second syntype of A. moricei and determined the second syntype (not located by us), as Pteronidea ferruginea, with which Amauronematus moricei has previously mostly been synonymised.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFADD8649737FB24FC2EF9A8.taxon	materials_examined	Type material examined Lectotype Amauronematus moricei, here designated GERMANY – Brandenburg • ♀; Finkenkrug; 52.56 ° N, 13.03 ° E; 30 m a. s. l.; SDEI, GBIF-GISHym 4745. Lectotype Pteronidea macroserrata, here designated GERMANY – Brandenburg • ♀; Finkenkrug; 52.56 ° N, 13.03 ° E; 30 m a. s. l.; SDEI, GBIF-GISHym 4745. Notes The lectotype of Amauronematus moricei and Pteronidea macroserrata is the same specimen, making these names objective synonyms. Two paralectotypes of Pteronidea macroserrata (Finland, Nurmes, MZH?), were not examined. They were reared from larvae on Betula (Lindqvist 1943). Holotype Pteronidea nuortevai FINLAND – Häme • ♀; Vuohiniemi; 60.95 ° N, 24.13 ° E; 29 Jul. 1948; P. Nuorteva leg.; MZH, http: // id. luomus. fi / GL. 3440. Notes Completely pale and with prominent serrulae.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFADD8649737FB24FC2EF9A8.taxon	biology_ecology	Host plants Betula pubescens. According to some specialists only Betula spp., but others state that Salix spp. are host plants (e. g., Kontuniemi 1960; Kangas 1985).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFADD8649737FB24FC2EF9A8.taxon	description	Genetics COI Based on 5 specimens, maximum within-species distance is 0.46 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura ferruginea and E. kangasi. Nuclear Based on 5 specimens, maximum within-species distance is 0.26 % (0.44 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.27 %, is Euura ferruginea.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFADD8649737FB24FC2EF9A8.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, and Germany.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFAED865972BF9AFFE40F9F7.taxon	description	Figs 191, 420	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFAED865972BF9AFFE40F9F7.taxon	diagnosis	Diagnosis Possibly not morphologically distinguishable from E. cadderensis: see details under that species.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFAED865972BF9AFFE40F9F7.taxon	materials_examined	Type material examined Lectotype Nematus ferrugineus, here designated BELGIUM • ♀; Liège; 50.6 ° N, 5.6 ° E; ZSM, GBIF-GISHym 3276. Holotype Amauronematus morawitzi RUSSIA – Leningradskaya oblast • ♀; St Petersburg; 59.9 ° N, 30.4 ° E; F. Morawitz leg.; ZIN, DEIGISHym 30175. Lectotype Pteronidea ferruginea var. plagiata, here designated FINLAND – Uusimaa • ♀; Karislojo [Karjalohja]; 60.243 ° N, 23.723 ° E; R. Forsius leg.; ZSM, GBIFGISHym 3379. Holotype Pteronidea maculifrons FINLAND – Central Finland • ♀; Pihtipudas; 63.36 ° N, 25.55 ° E; 8 – 9 Jun. 1946; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 3432. Paratype Nematus majusculus FRANCE – Hautes-Alpes • 1 ♀; Saint-Véran, La Chapelle-de-Clousis [Chapelle Notre Dame de Bon Secours de Clausis]; 44.67 ° N, 6.92 ° E; 2450 m a. s. l.; 12 Jul. 1975; J. Lacourt leg.; CTN, DEIGISHym 12673.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFAED865972BF9AFFE40F9F7.taxon	biology_ecology	Host plants Salix spp., including S. lapponum according to an ex larva rearing by TN.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFAED865972BF9AFFE40F9F7.taxon	description	Genetics COI Based on 9 specimens, maximum within-species distance is 3.65 % and the nearest neighbour, diverging by a minimum of 0 %, is Euura cadderensis. Nuclear Based on 5 specimens, maximum within-species distance is 0.6 % (0.53 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.27 %, is Euura cadderensis.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFAED865972BF9AFFE40F9F7.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Belgium, Estonia, Finland, France, Germany, Norway, Russia, Slovakia, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFAFD86A972DF942FD75FB83.taxon	description	Figs 192, 421	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFAFD86A972DF942FD75FB83.taxon	diagnosis	Diagnosis Very similar to E. cadderensis and E. ferruginea, which seem to have paler hind tarsi (black in E. kangasi). Females of E. kangasi apparently have a completely pale thorax but distinctly blackened basal abdominal terga, while E. cadderensis and E. ferruginea can be from completely pale to much darker, but the thorax and abdomen are black to a similar degree.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFAFD86A972DF942FD75FB83.taxon	materials_examined	Type material examined Holotype Pteronidea kangasi FINLAND – Häme • ♀; Pälkäne; 61.335 ° N, 24.272 ° E; 15 Jul. 1962; J. Kangas leg.; reared ex larva on Salix pentandra; MZH, http: // id. luomus. fi / GL. 3439.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFAFD86A972DF942FD75FB83.taxon	biology_ecology	Host plants Salix pentandra (Lindqvist 1964), S. fragilis, S. myrsinifolia, S. phylicifolia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFAFD86A972DF942FD75FB83.taxon	description	Genetics COI Based on 3 specimens, maximum within-species distance is 0 % and the nearest neighbour, diverging by a minimum of 0 %, is Euura cadderensis. Nuclear Based on 3 specimens, maximum within-species distance is 0.23 % (0 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.5 %, is Euura ferruginea.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFAFD86A972DF942FD75FB83.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA0D86B970AFBD6FBF6FA08.taxon	description	Figs 193, 422	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA0D86B970AFBD6FBF6FA08.taxon	diagnosis	Diagnosis Black pterostigma, pale costa, lancet (radix shorter than lamnium, 19 – 20 serrulae), and colouration of the abdomen (completely yellow) distinguish female E. melanocephalus from the other Euura. Similar is also Nematus umbratus, but it has fewer serrulae (13 – 16 (17? )). If stable, the extensively pale mesepisternum of E. melanocephalus males might distinguish them from the other species in the group. Mostly pale, pterostigma black, claws bifid, valvula 3 rather broad, hardly tapered, and with small invagination posteriorly.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA0D86B970AFBD6FBF6FA08.taxon	materials_examined	Type material examined Lectotype Nematus perspicillaris, here designated GERMANY • ♀; northern Germany [according to Hartig 1840: 22]; ZSM, DEI-GISHym 3377. Lectotype Pteronus xanthostomus, here designated NETHERLANDS – Noord-Brabant • ♀; Gemert; 51.56 ° N, 5.70 ° E; USNM, USNMENT 00779592, http: // n 2 t. net / ark: / 65665 / 3 eaf 2 ca 2 a-e 822 - 48 ff-ad 47 - f 5 aefe 11 b 4 f 9. Notes Liston et al. (2006) incorrectly wrote that USNMENT 00779592 is the holotype. According to archive sources at the USNM, several other sawfly specimens were reared from the same batch of cocoons, but only this single specimen was preserved. However, the information in Rohwer (1915) only allows the assumption that the original description was based on syntypes.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA0D86B970AFBD6FBF6FA08.taxon	biology_ecology	Host plants Salix fragilis (Urban 1999), Corylus avellana L., Ulmus sp. (based on ex larva reared specimens). Populus and Betula have also been recorded (reviewed in Urban 1999). Larvae reared ex ovo from Salix fragilis did accept Ulmus L., Corylus L. and Populus in the presence of Salix fragilis (although with clearly lower preference), but Betula was accepted only when no other food was available (Urban 1999). Two generations per year in central Europe (Urban 1999).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA0D86B970AFBD6FBF6FA08.taxon	description	Genetics COI Based on 2 specimens, the maximum within-species distance is 0 % and the nearest neighbour, diverging by a minimum of 2.13 %, is Euura ferruginea. Nuclear Based on 1774 bp of NaK and EF 1 a F 2, only one specimen available. The nearest neighbour, diverging by a minimum of 0.39 %, is Euura kangasi.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA0D86B970AFBD6FBF6FA08.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Austria, Belgium, Finland, and Germany.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA1D86B9790FA4FFEBFF93D.taxon	description	Valvula 3 (short and broad in dorsal view), lancet (basalmost suture strongly bending apically, setae almost absent to present in most annuli), and bifid claws enable separation of the females from the other Euura. Penis valves of E. miliaris are not clearly different from the melanocephalus group and E. anthracina, but antenna might be longer than costa and pterostigma, while antennae are about as long as costa and pterostigma in melanocephalus group and E. anthracina. Three species are recognized in the group.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA1D8689748F93CFD0AFB9D.taxon	description	Figs 194, 545	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA1D8689748F93CFD0AFB9D.taxon	diagnosis	Diagnosis Usually almost completely pale and very similar to E. miliaris. First metatarsomere is about 4 times as long as broad and darker in E. fagi (about 3 times as long as broad and paler in E. miliaris). A male from Czech Republic (DEI-GISHym 13853) is confirmed to be E. fagi based on COI. The male has a penis valve (Fig. 545) similar to E. viridis, but malar space is about as long as diameter of front ocellus, like in E. miliaris (the malar space is longer in E. viridis, at least usually).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA1D8689748F93CFD0AFB9D.taxon	biology_ecology	Host plants Fagus sylvatica L.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA1D8689748F93CFD0AFB9D.taxon	description	Genetics COI Based on 5 specimens, maximum within-species distance is 1.98 % and the nearest neighbour, diverging by a minimum of 3.20 %, is Euura miliaris. Nuclear Only one sequence available, a female with haplotypes diverging by 0 %. The nearest neighbour, diverging by a minimum of 1.18 %, is Euura miliaris.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA1D8689748F93CFD0AFB9D.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Czech Republic, Finland, Germany, Slovenia, Sweden, Switzerland, and the United Kingdom.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA2D869975CFBDCFDA5FAB5.taxon	description	Figs 195, 423	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA2D869975CFBDCFDA5FAB5.taxon	diagnosis	Diagnosis Pale specimens are very similar to E. fagi: see differences mentioned under that species. Abdomen of live females can be green. In northern Fennoscandia, females can be dorsally extensively black, like Pteronus magus from North America (see Smith 2004). Larvae from Canada belonging to BIN cluster BOLD: AAN 8145 fit perfectly with E. miliaris, but not with E. fagi or E. nigricornis.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA2D869975CFBDCFDA5FAB5.taxon	materials_examined	Type material examined Holotype Nematus fulvus GERMANY – Niedersachsen • ♀; Harz; 51.8 ° N, 10.3 ° E; W. Saxesen leg.; ZSM, GBIF-GISHym 3286. Lectotype Nematus purus, here designated GERMANY – Niedersachsen • ♀; Hannover; ZSM, GBIF-GISHym 3396. Paralectotype Nematus purus GERMANY • ♀; ZSM, GBIF-GISHym 3397. Notes Pteronus magus. Based on Smith (2004), a very good morphological match is DEI-GISHym 31136.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA2D869975CFBDCFDA5FAB5.taxon	biology_ecology	Host plants A wide spectrum of Salix spp. (Taeger et al. 1998).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA2D869975CFBDCFDA5FAB5.taxon	description	Genetics COI Based on 6 specimens, maximum within-species distance is 2.45 % and the nearest neighbour, diverging by a minimum of 3.20 %, is Euura fagi. Nuclear Based on 3 specimens, maximum within-species distance is 0.07 % (0.13 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 1.18 %, is Euura fagi.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA2D869975CFBDCFDA5FAB5.taxon	distribution	Distribution and material examined Holarctic. Specimens studied are from Austria, Canada, China (only genetics), Denmark, Finland, France, Germany, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA3D86E9722FA84FE39FB85.taxon	description	Figs 196, 424	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA3D86E9722FA84FE39FB85.taxon	diagnosis	Diagnosis Black antennae and mesepisternum distinguish the females from the darker specimens of E. miliaris. Male not known for certain.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA3D86E9722FA84FE39FB85.taxon	materials_examined	Type material examined Lectotype Nematus miniatus, here designated GERMANY – Niedersachsen • ♀; Harz; 51.8 ° N, 10.3 ° E; W. Saxesen leg.; NFVG, GBIF-GISHym 4677. Holotype Nematus sibiricus RUSSIA – Irkutskaja oblast • ♀; Irkutsk; 52.29 ° N, 104.24 ° E; ZIN, DEI-GISHym 30174.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA3D86E9722FA84FE39FB85.taxon	biology_ecology	Host plants Populus tremula. Records from Salix (Georgiev et al. 2002) and Betula (Boevé 1990) need confirmation.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA3D86E9722FA84FE39FB85.taxon	description	Genetics COI Based on 6 specimens, maximum within-species distance is 2.28 % and the nearest neighbour, diverging by a minimum of 3.65 %, is Euura miliaris. Nuclear Only one sequence available, a female with haplotypes diverging by 0.01 %. The nearest neighbour, diverging by a minimum of 1.7 %, is Euura miliaris.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA3D86E9722FA84FE39FB85.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Belgium, Czech Republic (uncertain male), Finland, Germany, Russia, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA4D86E9764FBD4FC17FA2A.taxon	description	Valvula 3 (narrow and acute at apex in dorsal view) and lancet (18 – 24 serrulae, ventrally concave, short spine-like setae, apical sutures slightly or distinctly inclined basally, middle part of basal sutures strongly bent apically) enable separation of the females from those of the other Euura. Males in the group have two types of penis valves. Most of the species (E. miltonota, E. sagmarius, E. nimbus) have rather characteristic penis valves compared to the other Euura: valvura distinctly longer than ventral margin of paravalva, invagination between valvispina and paravalva broad, ventroapical margin of paravalva broad and round, valvar strut distinctly removed from ventral margin of paravalva along its entire length. Euura halo Prous, Liston & Mutanen sp. nov. penis valve is more similar to that of some other species outside the group (see details under that species).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA4D86F9726FA2DFB53FBA5.taxon	description	Figs 197, 425	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA4D86F9726FA2DFB53FBA5.taxon	diagnosis	Diagnosis Females are almost completely yellowish (abdomen can be green while alive). Females of E. sagmarius can be almost as pale, but they are more reddish or brownish in colour and abdomen is still mostly black dorsally (possibly always mostly pale in E. miltonota). Because they use different willow hosts, with different habitat requirements, it is also unlikely that these species occur in the same localities. Its extensively pale head around eyes and abdomen ventrally pale should enable separation of E. miltonota males from the others in the group (mostly black).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA4D86F9726FA2DFB53FBA5.taxon	materials_examined	Type material examined Holotype Amauronematus jaroslawensis RUSSIA – Yaroslavl oblast • ♀; Yaroslavskiy Rayon; ZIN, DEI-GISHym 30176.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA4D86F9726FA2DFB53FBA5.taxon	biology_ecology	Host plants Salix viminalis (Miles 1935; Roller et al. 2022).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA4D86F9726FA2DFB53FBA5.taxon	description	Genetics COI Based on 5 specimens, maximum within-species distance is 1.82 % and the nearest neighbours, diverging by a minimum of 1.06 %, are Euura nimbus and E. sagmarius. Nuclear Based on 4 specimens, maximum within-species distance is 1.05 % (0.25 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.95 %, is Euura nimbus.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA4D86F9726FA2DFB53FBA5.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Czech Republic, Germany, Russia, and Slovakia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA5D86C975BFBB3FB16FBD6.taxon	description	Figs 198, 426	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA5D86C975BFBB3FB16FBD6.taxon	diagnosis	Diagnosis Mostly black colouration, centrally pale brown pterostigma, and 20 – 23 serrulae of the lancet should usually enable identification of the females. Some specimens of E. sagmarius are almost as dark, but at least usually still seem to have partly pale or brownish mesepisternum (black in E. nimbus). Males might not be clearly distinguishable from E. sagmarius. Based on nuclear genes there are two clusters of E. nimbus, but no clear morphological differences between them.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA5D86C975BFBB3FB16FBD6.taxon	materials_examined	Type material examined Holotype Amauronematus nimbus SWITZERLAND – Valais • ♀; near Verbier; 46.10 ° N, 7.23 ° E; 2440 – 2590 m a. s. l.; 27 Jun. 1959; J. E. and R. B. Benson leg.; BMNH, B. M. TYPEHYM. 1.767. Notes Head more like DEI-GISHym 19984, sawsheath in lateral view more like ZMUO. 030875. Lectotype Amauronematus lanceatus, here designated FINLAND – Lapin Lääni • ♀; Kilpisjärvi; 69.04 ° N, 20.81 ° E; 23 Jun. 1963; O. Ranin leg.; MZH, http: // id. luomus. fi / GL. 3400. Paralectotypes Amauronematus lanceatus FINLAND – Inari Lapland • 1 ♀; Utsjoki; 69.91 ° N, 27.03 ° E; 20 Jun. 1960; O. Ranin leg.; MZH, http: // id. luomus. fi / GL. 3401. – Kittilä Lapland • 1 ♀; Muonio, Pallastunturi; 68.100 ° N, 23.999 ° E; 1 Aug. 1951; J. Kaisila leg.; MZH, http: // id. luomus. fi / GL. 3402. Notes Best matches: DEI-GISHym 19983, ZMUO. 030875. A COI sequence (325 bp) of the lectotype (http: // id. luomus. fi / GL. 3400) is identical to, e. g., DEI-GISHym 84692 (E. sagmarius) and ZMUO. 030875 (E. nimbus).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA5D86C975BFBB3FB16FBD6.taxon	biology_ecology	Host plants Salix lanata and other grey willows.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA5D86C975BFBB3FB16FBD6.taxon	description	Genetics COI Based on 19 specimens, maximum within-species distance is 2.45 % and the nearest neighbour, diverging by a minimum of 0 %, is Euura sagmarius. Nuclear Based on 16 specimens, maximum within-species distance is 1.31 % (0.96 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.45 %, is Euura sagmarius.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA5D86C975BFBB3FB16FBD6.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Norway, Sweden, and Switzerland.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA6D86D972BFB62FBE8FC5D.taxon	description	Figs 199, 427	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA6D86D972BFB62FBE8FC5D.taxon	diagnosis	Diagnosis The palest females have a nearly completely reddish head and thorax (except antenna), while the abdomen is still dorsally mostly black, separating them from E. miltonota (mostly yellowish, including the abdomen dorsally). The darkest specimens might not be reliably distinguishable from E. nimbus if the mesepisternum becomes completely black (usually at least slightly brownish or reddish). Males might not be clearly distinguishable from E. nimbus. Female ZMUO. 064651 with almost completely black mesepisternum (slightly brown line in the middle), labrum, clypeus and malar space pale, head behind and above eyes slightly brownish, abdomen ventroapically mostly pale.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA6D86D972BFB62FBE8FC5D.taxon	materials_examined	Type material examined Lectotype Amauronematus sagmarius RUSSIA – Volgograd oblast • ♀; Sarepta [Volgograd]; 48.69 ° N, 44.53 ° E; SDEI, GBIF-GISHym 4100. Lectotype Amauronematus viduatinus, here designated RUSSIA – Kamchatka oblast • ♀; Nischne-Kamtchatsk, Lake Azhabachye; 56.166 ° N, 161.893 ° E; R. Malaise leg.; NHRS, NHRS-HEVA 000006398. Paralectotype Amauronematus viduatinus RUSSIA – Kamchatka oblast • 1 ♀; same data as for lectotype; NHRS, NHRS-HEVA 000006394. Lectotype Amauronematus viduatinus var. apiciscerra, here designated RUSSIA – Kamchatka oblast • ♀; Klutchi [Klyuchi]; 56.32 ° N, 160.85 ° E; R. Malaise leg.; NHRS, NHRS-HEVA 000006404.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA6D86D972BFB62FBE8FC5D.taxon	biology_ecology	Host plants Salix phylicifolia and possibly some other Salix spp.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA6D86D972BFB62FBE8FC5D.taxon	description	Genetics COI Based on 21 specimens, maximum within-species distance is 2.74 % and the nearest neighbour, diverging by a minimum of 0 %, is Euura nimbus. Nuclear Based on 20 specimens, maximum within-species distance is 1.34 % (0.88 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.45 %, is Euura nimbus.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA6D86D972BFB62FBE8FC5D.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Norway, Russia, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA7D89094E0FC1DFD75FD18.taxon	description	urn: lsid: zoobank. org: act: E 9 A 11 B 4 C-D 445 - 48 E 4 - 82 DC- 92247 F 381 EEF Figs 83 – 84, 200, 428	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA7D89094E0FC1DFD75FD18.taxon	diagnosis	Diagnosis Their mostly black colouration, narrow pale band at the base of dark brown pterostigma, and particularly the lancet (18 – 19 serrulae; short spine like setae, apical sutures slightly or distinctly inclined basally, middle part of basal sutures strongly bent apically) distinguish the females from the other Euura. However, the superficial resemblance to some gall-making Euura is close. Male penis valve (large and basally broad valvispina, indistinct invagination between valvispina and ventroapical lobe of paravalva) is most similar to E. uda, E. freyja, and E. myosotidis. Besides external characters, penis valves of E. uda (1.3 mm; claws with small subapical tooth) and E. myosotidis (1.2 – 1.4 mm; broad yellowish pterostigma) are distinctly larger than in E. halo sp. nov. (1.0 mm; bifid claws and dark brown pterostigma with whitish line at base). Euura freyja penis valves are smaller (0.8 – 0.9 mm) and the species does not have a distinct whitish line at the base of pterostigma.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA7D89094E0FC1DFD75FD18.taxon	etymology	Etymology The species name, a noun in apposition, refers to an optical phenomenon (produced by light interacting with ice crystals in the atmosphere) observed by AL, MM, and MP in Utsjoki in 2023 when some of the specimens of the species were collected.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA7D89094E0FC1DFD75FD18.taxon	materials_examined	Type material Holotype FINLAND – Inari Lapland • ♀; Utsjoki, Allasuolu; 69.768 ° N, 26.184 ° E; 4 Jul. 2018; M. Mutanen, N. Mutanen and A. Mutanen leg.; rearing code 118 / 2018, ex larva Salix sp.; ZMUO, ZMUO. 038878. Paratypes FINLAND – Inari Lapland • 1 ♀; same locality as for holotype; 17 Jun. 2023; A. Liston leg.; SDEI, DEI-GISHym 81435 • 1 ♂; same locality as for holotype; 20 Jun. 2023; A. Liston, M. Mutanen and M. Prous leg.; ZMUO, ZMUO. 067421. – Northern Ostrobothnia • 1 ♂; Kiiminki; 65.1478 ° N, 25.8383 ° E; 14 May 2023; M. Mutanen leg.; ZMUO, ZMUO. 077412.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA7D89094E0FC1DFD75FD18.taxon	description	Description Female Body 4.3 – 4.4 mm. Colour mostly black. Labrum pale; labial and maxillary palps brown; mandibles reddish-brown at apex, pale at base; clypeus ventrally pale; supraclypeal area black or pale; temples and orbits ventrally, dorsally and posteriorly somewhat brown; legs more or less brown or pale, except coxae basally and tarsi apically black; femora pale to largely black; pronotum posteriorly or posteriorly and centrally extensively pale; tegula pale; pterostigma and costa dark brown with whitish line at base of pterostigma; hypopygium, valvifer 2, and terga 9 – 10 pale; all sterna and terga laterally more or less pale or pale colour increasing gradually from sternum 5 and tergum 5 laterally; cerci pale. Clypeus shallowly emarginate; frontal area between antennae rather flat, not distinctly angulate (approaching “ Amauronematus - type ”); postocellar area about 1.8 – 2.5 times as broad as long; antenna slightly shorter than costa; mesepisternum smooth; claws bifid, subapical tooth shorter than apical; valvula 3 in dorsal view slightly tapering, narrow, without invagination posteriorly. Lancet with 18 – 19 serrulae; serrulae triangular with sparse microdenticles, not strongly protruding, and with cypsellae; spine-like setae minute. Male Body 3.7 mm. Colour mostly black, darker than female. Labrum brown; labial and maxillary palps brown; mandibles reddish-brown at apex, brown or dark brown at base; clypeus ventrally slightly brown; hind coxa apically extensively pale; fore and middle trochanters and trochantelli slightly pale; hind trochanters and trochantelli extensively pale; all femora apically slightly pale; all tibiae pale; fore and middle tarsi basally pale; pterostigma and costa dark brown with whitish line at base of pterostigma; sternum 9 pale. Clypeus indistinctly emarginate, more or less truncate; frontal area between antennae rather flat, not distinctly angulate (approaching “ Amauronematus - type ”); postocellar area about 2.5 – 3.0 times as broad as long; antenna slightly shorter than costa and pterostigma combined; mesepisternum smooth; claws bifid, subapical tooth shorter than apical; projection of tergum 8 distinct, about as long as broad and with truncate apex. Penis valve 1.0 mm, valvispina large and broad at base, about as broad as ventroapical lobe of paravalva, invagination between ventroapical lobe and valvispina indistinct, paravalva with slight invagination ventrally, valviceps apically broader than basally.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA7D89094E0FC1DFD75FD18.taxon	biology_ecology	Host plants Salix sp.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA7D89094E0FC1DFD75FD18.taxon	description	Genetics COI Based on 4 specimens, maximum within-species distance is 0 % and the nearest neighbours, diverging by a minimum of 8.05 %, are Euura erecta and E. viduata. Nuclear Based on 4 specimens, maximum within-species distance is 0 % (0.16 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 1.64 %, is Euura nimbus.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FFA7D89094E0FC1DFD75FD18.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5AD8909761FD5EFB3CFC2A.taxon	description	The group is mostly defined based on genetic data. The species in the group tend to have a broad pterostigma, which can be somewhat useful in identifying some of the species, but cannot be unambiguously used to define the group. Most of the species can be identified rather well based on morphological characters, but females of E. platystigma and E. semiopaca can be difficult to distinguish from some members of the bipartita group. Seven species are recognized in the group.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5AD8919753FC2DFC17FE51.taxon	description	Figs 201, 429	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5AD8919753FC2DFC17FE51.taxon	diagnosis	Diagnosis Most similar to E. platystigma and E. semiopaca. Strong subapical tooth (as long as or longer than apical tooth) of claws should distinguish the species from E. platystigma and sometimes also from E. semiopaca. Extensively pale head and dorsally pale mesepisternum should distinguish the females from E. semiopaca (mostly black head and thorax). Penis valves are similar to E. semiopaca, but the subapical tooth of claws is perhaps larger in E. dissimilis than in E. semiopaca. In addition, at least some of the males of E. semiopaca have a black mesepisternum (dorsal half pale in E. dissimilis). Females and males: antenna black, head extensively pale around eyes, dorsal half of mesepisternum pale, claws with large subapical tooth or bifid, abdomen ventrally pale, terga dorsally partly pale.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5AD8919753FC2DFC17FE51.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5AD8919753FC2DFC17FE51.taxon	description	Genetics COI Based on 5 specimens, maximum within-species distance is 0.46 % and the nearest neighbour, diverging by a minimum of 4.26 %, is Euura sordidiapex. Nuclear Based on 2 specimens, maximum within-species distance is 0.39 %. The nearest neighbour, diverging by a minimum of 1.05 %, is Euura myosotidis.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5AD8919753FC2DFC17FE51.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from France, and Germany.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5BD8919723FE18FEDAF857.taxon	description	Figs 206, 430	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5BD8919723FE18FEDAF857.taxon	diagnosis	Diagnosis Females are most similar to E. jugicola. Mesepisternum is (usually?) extensively pale and black colour on abdominal terga decreases gradually from base to apex in E. hypoxantha, while mesepisternum is (usually?) black, and black colour on terga decreases abruptly from base to apex in E. jugicola. Also, the abdomen can be green in living E. hypoxantha females, but pink in E. jugicola. Details of the lancet (setae long and hair-like, all visible sutures in dorsal part inclined basally) and colouration (pale and round pterostigma, pale mesepisternum) should distinguish the species from the other Euura which have a lancet with the radix longer or about as long as lamnium. Males are extensively pale and have distinctive penis valves, with a large valvispina and a distinct hump dorsobasally.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5BD8919723FE18FEDAF857.taxon	materials_examined	Type material examined Lectotype Nematus hypoxanthus, here designated GERMANY – Nordrhein-Westfalen • ♂; Aachen area; 50.77 ° N, 6.09 ° E; ZSM, DEI-GISHym 3301. Lectotype Nematus palliatus, here designated SWEDEN – Skåne • ♀; Lund; 55.71 ° N, 13.19 ° E; MZLU, MZLU 2017322.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5BD8919723FE18FEDAF857.taxon	biology_ecology	Host plants Many different Salix spp. (Taeger et al. 1998), less frequently Populus spp. (Chambers 1952).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5BD8919723FE18FEDAF857.taxon	description	Genetics COI Based on 7 specimens, maximum within-species distance is 2.43 % and the nearest neighbour, diverging by a minimum of 4.26 %, is Euura poppii. Nuclear Based on 6 specimens, maximum within-species distance is 0.53 % (0.19 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 1 %, is Euura jugicola.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5BD8919723FE18FEDAF857.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Austria, Belgium, Estonia, Finland, Germany, Norway, Russia, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5CD896972AFEEFFB2AF901.taxon	description	Figs 207, 431 – 432	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5CD896972AFEEFFB2AF901.taxon	diagnosis	Diagnosis Females are most similar to E. hypoxantha: see details under that species. The abdomen of living specimens can be extensively pink, and the mesepisternum is usually (always?) slightly matt. In North America, at least males can have a black pterostigma (yellow to brown in Europe). Penis valves are most similar to E. fuscodorsata and E. parvilabris (E. bipartita group). Legs and abdomen ventrally are extensively pale in E. jugicola but in E. parvilabris mostly black. Euura fuscodorsata is paler (e. g., mesepisternum pale, whereas black in E. jugicola) and the males seem to have a smaller subapical tooth of claws than in E. jugicola. In males, hind tarsi and tip of hind tibia from black to pale, in female (always?) largely pale.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5CD896972AFEEFFB2AF901.taxon	materials_examined	Type material examined Lectotype Nematus jugicola, here designated SWEDEN – Dalarna • ♀; Dalecarlia alpibus [mountainous part of Dalarna province]; C. H. Boheman leg.; NHRS, NHRS-HEVA 000003972. Holotype Pteronidea karvoneni FINLAND – Lapin Lääni • ♀; Kilpisjärvi; 69.04 ° N, 20.81 ° E; 2 Jul. 1964; V. J. Karvonen leg.; MZH, http: // id. luomus. fi / GL. 3504.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5CD896972AFEEFFB2AF901.taxon	biology_ecology	Host plants Salix spp., including S. glabra Scop. (Weiffenbach 1975), S. aurita L., S. myrsinifolia, and S. phylicifolia (Kangas 1985).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5CD896972AFEEFFB2AF901.taxon	description	Genetics COI Based on 10 specimens, maximum within-species distance is 4.1 % and the nearest neighbours, diverging by a minimum of 5.32 %, are Euura connecta and E. semiopaca. Nuclear Based on 7 specimens, maximum within-species distance is 0.3 % (0.44 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.98 %, is Euura myosotidis.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5CD896972AFEEFFB2AF901.taxon	distribution	Distribution and material examined Holarctic. Specimens studied are from Canada, Finland, Italy, Sweden, and the USA.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5CD894973CF948FED5FA34.taxon	description	Figs 202, 433 – 434	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5CD894973CF948FED5FA34.taxon	diagnosis	Diagnosis Broad and yellowish pterostigma, colouration of the body (typically yellowish legs and abdomen ventrally, otherwise mostly black), bifid claws, in dorsal view narrow and pointed valvula 3, lancets (somewhat papilliform serrulae, with broad and round ventrobasal tip) and penis valves (valvispina large, distinctly expanded basally, ventroapical margin of paravalva broad and perpendicular to valvispina or inclined apically) enable reliable identification of the species. Sometimes, the abdomen can be mostly or nearly completely pale and also the thorax and head can be more extensively pale. In females, the abdomen of living specimens is sometimes green (“ Nematus incompletus ” form) rather than yellow, but there does not appear to be a correlation between this colour pattern and genetic data. The species is genetically diverse (as indicated also by the level of heterozygosity in females), but there is no clear indication of the existence of more than one species.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5CD894973CF948FED5FA34.taxon	materials_examined	Type material examined Lectotype Nematus segmentarius, here designated GERMANY – Nordrhein-Westfalen • ♀; Aachen area; 50.77 ° N, 6.09 ° E; ZSM, DEI-GISHym 3418. Lectotype Pteronus myosotidis var. fallaciosus, here designated SPAIN – Galicia • ♀; Coruna; 43.34 ° N, 8.42 ° E; SDEI, GBIF-GISHym 3860. Syntype Nematus incompletus GERMANY – Nordrhein-Westfalen • ♀; Aachen area; 50.77 ° N, 6.09 ° E; ZSM, DEI-GISHym 3302. Notes Specimen almost completely destroyed: only left forewing remaining. Lectotype Pteronidea segmentaria var. signata, here designated GERMANY – Thüringen • ♂; Erfurt, Steiger; 50.94 ° N, 11.03 ° E; 6 Jul. 1890; ZSM, GBIF-GISHym 3424. Lectotype Pteronidea segmentaria var. tessinensis, here designated SWITZERLAND – Ticino • ♀; Valle Maggia; 46.24 ° N, 8.71 ° E; ZSM, GBIF-GISHym 3447. Holotype Pteronidea transversalis RUSSIA – Krasnoyarskiy Kray • ♀; Tjunojar; 11 Jul. 1973; B. N. Verzhutskij leg.; MZH, http: // id. luomus. fi / GL. 5143.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5CD894973CF948FED5FA34.taxon	biology_ecology	Host plants A wide range of herbaceous Fabaceae Lindl.: Lathyrus spp. (Kontuniemi 1960; Macek et al. 2020; rearings by VV), Lotus corniculatus L. (Perkins 1929 a), Trifolium spp. (Macek et al. 2020; rearings by VV and mm), and Vicia spp. (Kangas 1985; Macek et al. 2020).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5CD894973CF948FED5FA34.taxon	description	Genetics COI Based on 58 specimens, maximum within-species distance is 4.71 % and the nearest neighbour, diverging by a minimum of 5.47 %, is Euura hypoxantha. We excluded a COI sequence of ZMUO. 040362 from the calculation, because it has an unusual three nucleotide deletion (but not frame shifting) and is a minimum of 6.98 % different from the other E. myosotidis. A similar (0.94 % different) secondary variant with the deletion was detected in ZMUO. 035000. The variant with the deletion may be a NUMT that is occasionally co-amplified. Nuclear Based on 16 specimens, maximum within-species distance is 0.94 % (0.87 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.98 %, is Euura jugicola.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5CD894973CF948FED5FA34.taxon	distribution	Distribution and material examined Holarctic. Specimens studied are from Belgium, Bulgaria, Canada (only genetics), Estonia, Finland, France, Germany, Greece, Iran, Italy, Portugal, Russia, Spain, Sweden, Switzerland, United Kingdom, and the USA.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5ED8959737FA04FB8DFC25.taxon	description	Figs 203, 435	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5ED8959737FA04FB8DFC25.taxon	diagnosis	Diagnosis Females are most similar to E. semiopaca, which tends to be darker. In E. platystigma, pale are the head extensively around eyes, antennae ventrally, the abdominal sterna, and downturned parts of terga (mostly black or usually darker in E. semiopaca). Subapical tooth might also usually be smaller than in E. semiopaca. Males of E. platystigma also tend to be paler than those of E. semiopaca, but the differences in penis valves are much clearer (invagination between valvispina and ventroapical margin of paravalva absent or indistinct and shorter valvispina in E. platystigma; in E. semiopaca the invagination between valvispina and ventroapical margin of paravalva is distinct and the valvispina is longer). See also differences discussed under E. dissimilis, which is not known in Fennoscandia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5ED8959737FA04FB8DFC25.taxon	materials_examined	Type material examined Holotype Pteronidea platystigma FINLAND – Inari Lapland • ♀; Utsjoki, Outakoski; 69.61 ° N, 25.98 ° E; 25 Jun. 1947; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 3540.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5ED8959737FA04FB8DFC25.taxon	biology_ecology	Host plants Astragalus alpinus L. (Vikberg 1978).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5ED8959737FA04FB8DFC25.taxon	description	Genetics COI Based on 11 specimens, maximum within-species distance is 0.61 % and the nearest neighbour, diverging by a minimum of 4.26 %, is Euura semiopaca. Nuclear Based on 5 specimens, maximum within-species distance is 0.2 % (0.23 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 1.03 %, is Euura myosotidis.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5ED8959737FA04FB8DFC25.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Norway, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5FD89A973AFC34FC10FD0E.taxon	description	Figs 204, 436 – 437	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5FD89A973AFC34FC10FD0E.taxon	diagnosis	Diagnosis Most similar to E. platystigma and E. dissimilis: see discussion under those species.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5FD89A973AFC34FC10FD0E.taxon	materials_examined	Type material examined Holotype Pteronidea semiopaca FINLAND – Inari Lapland • ♀; Utsjoki, Outakoski; 69.61 ° N, 25.98 ° E; 25 Jun. 1947; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 3519. Notes Mesepisternum of holotype very slightly matt; pronotum colouration darker than in E. platystigma; claws with rather large subapical tooth. A paratype (http: // id. luomus. fi / GL. 3518) seems to be E. sagmarius. Holotype Pachynematus tenuiserra FINLAND – Lapin Lääni • ♀; Saana; 69.05 ° N, 20.85 ° E; A. Nordman leg.; MZH, http: // id. luomus. fi / GL. 3594.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5FD89A973AFC34FC10FD0E.taxon	biology_ecology	Host plants Astragalus frigidus (L.) A. Gray.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5FD89A973AFC34FC10FD0E.taxon	description	Genetics COI Only one sequence is available. The nearest neighbour, diverging by a minimum of 4.26 %, is Euura platystigma. Nuclear Only one sequence available. The nearest neighbour, diverging by a minimum of 1.19 %, is Euura myosotidis.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF5FD89A973AFC34FC10FD0E.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF50D89B9754FD4AFABCFD02.taxon	description	Figs 205, 438	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF50D89B9754FD4AFABCFD02.taxon	diagnosis	Diagnosis Bifid claws, valvula 3 (narrow and pointed in dorsal view), penis valves, and colour pattern enable reliable identification of the species. The body is dorsally at least partly black, laterally and ventrally completely or nearly completely pale and antenna, metatibia, and metatarsus are black. Males are extremely rare.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF50D89B9754FD4AFABCFD02.taxon	materials_examined	Type material examined Lectotype Nematus hortensis, here designated GERMANY • ♀; ZSM, GBIF-GISHym 3292. Lectotype Nematus xanthobaptus, here designated GERMANY – Nordrhein-Westfalen • ♀; Köln; 50.95 ° N, 6.95 ° E; ZSM, GBIF-GISHym 3458.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF50D89B9754FD4AFABCFD02.taxon	biology_ecology	Host plants Trees of the Fabaceae. In the West Palaearctic, Robinia pseudoacacia L. is the usual host plant, but other species of Robinia L. (Liston 2011) and Sophora japonica L. (Schedl 2010) are occasionally used, and in North America Gleditsia triacanthos L. (Raizenne 1957).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF50D89B9754FD4AFABCFD02.taxon	description	Genetics COI Based on 5 specimens, maximum within-species distance is 1.07 % and the nearest neighbours, diverging by a minimum of 7.49 %, are Euura connecta, E. leptostigma, and E. leucopyga. Nuclear Only one sequence available, a female with haplotypes diverging by 0.17 %. The nearest neighbour, diverging by a minimum of 1.41 %, is Euura myosotidis.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF50D89B9754FD4AFABCFD02.taxon	distribution	Distribution and material examined Holarctic. Specimens studied are from Belgium, Bulgaria, Estonia, Germany, Italy, and Romania.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF51D89B9764FD55FE44FB67.taxon	description	The species group was revised by Prous et al. (2021): see there for details of type material, synonymy, host plants, distribution, and identification characters. Females of the group are extremely similar to those of E. bergmanni, E. respondens, and E. sylvestris of the E. bergmanni group. These E. bergmanni group species tend to have a basal extension at the base of tangium (forming a concavity at the base of tangium), which seems to be absent in the oligospila group (this was overlooked by Prous et al. 2021). There may be some small additional differences between the lancets of the E. oligospila group and E. bergmanni and E. respondens (see Prous et al. 2021). Euura sylvestris seems to have a longer malar space (more than 1.4 times as long as diameter of front ocellus), usually less deeply emarginate clypeus, and more rectangular head in dorsal view than oligospila group (malar space usually less than 1.4 times as long as diameter of front ocellus). Penis valves enable more reliable separation of the oligospila group from the bergmanni group and the other Euura. The valviceps in the oligospila group is basally about as broad as apically, has a weak or distinct constriction in the middle, and the invagination between valvispina and paravalva is indistinct (Prous et al. 2021). Two species are recognised.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF51D89B972EFA9FFB2EF8B5.taxon	description	Figs 221, 440	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF51D89B972EFA9FFB2EF8B5.taxon	materials_examined	Type material examined Holotype Pteronidea angustiserra FINLAND – South Ostrobothnia • ♀; Mustasaari; 63.11 ° N, 21.68 ° E; 24 Jul. 1963; J. Perkiömäki leg.; MZH, http: // id. luomus. fi / GL. 3443. Notes Pteronidea angustiserra was incorrectly synonymised with E. sylvestris by Prous et al. (2021). A COI sequence (658 bp) of the holotype is identical to ZMUO. 029674 and ZMUO. 028386.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF52D898972AFE37FBF2F99A.taxon	description	Figs 210, 441	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF52D898972AFE37FBF2F99A.taxon	diagnosis	Diagnosis Mostly pale mesepisternum, black mesepimeron, and dorsally extensively black hind tibia and often hind femur usually enable separation of the species from the others in the group. The more or less straight basalmost suture of the lancet may distinguish the females from E. pallescens (basalmost suture distinctly inclined apically), but not from E. styx. The broad valvispina reliably distinguishes the males from the two other species (narrow valvispina). Abdomen and thorax dorsally from nearly completely black to mostly pale.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF52D898972AFE37FBF2F99A.taxon	biology_ecology	Host plants Picea abies (L.) H. Karst. and probably at least some other species of Picea (Enston & Williams 2024). One generation per year.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF52D898972AFE37FBF2F99A.taxon	description	Genetics COI Based on 6 specimens, maximum within-species distance is 0.78 % and the nearest neighbour, diverging by a minimum of 0 %, is Euura pallescens. Nuclear Based on 6 specimens, maximum within-species distance is 0.18 % (0.12 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.64 %, is Euura pallescens.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF52D898972AFE37FBF2F99A.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, France, Germany, and Slovakia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF52D8989760FEEEFAF9FE20.taxon	description	The small subapical tooth of the claws, lancet (radix longer than lamnium, tangium distinctly curved), valvula 3 (short, in lateral view about as long as broad if not disrupted), distinctive penis valves, and at least ventrally pale abdomen separate the group from the other Euura. Three species are recognised.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF52D8999751F9DDFB9AFA9C.taxon	description	Figs 211, 442	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF52D8999751F9DDFB9AFA9C.taxon	diagnosis	Diagnosis Females are typically nearly completely pale, males dorsally extensively black. Pale mesepisternum, mesepimeron, hind tibia and femur should enable separation of the species from the others in the group. The distinctly apically inclined basalmost suture of the lancet also distinguishes the females from the other two species (basalmost suture more or less straight). Penis valves are most similar to E. styx. Ventroapical lobe of paravalva is more or less symmetrical in E. pallescens, but asymmetrical (dorsally straight and ventrally convex) in E. styx.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF52D8999751F9DDFB9AFA9C.taxon	materials_examined	Type material examined Lectotype Nematus pallescens, here designated GERMANY – Niedersachsen • ♀; Harz; 51.8 ° N, 10.3 ° E; W. Saxesen leg.; ZSM, GBIF-GISHym 3373. Lectotype Nematus olivaceus, here designated SWEDEN – Skåne • ♀; Wittsjö [Vittsjö]; 56.35 ° N, 13.66 ° E; in coniferous forest; MZLU, MZLU 2017280.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF52D8999751F9DDFB9AFA9C.taxon	biology_ecology	Host plants Picea abies. One generation per year.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF52D8999751F9DDFB9AFA9C.taxon	description	Genetics COI Based on 5 specimens, maximum within-species distance is 1.37 % and the nearest neighbour, diverging by a minimum of 0 %, is Euura montana. Nuclear Based on 5 specimens, maximum within-species distance is 0.36 % (0.12 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.6 %, is Euura pallescens group specimen DEI-GISHym 80693 (looks like E. montana, lancet Fig. 213) from Primorsky Krai, Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF52D8999751F9DDFB9AFA9C.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Germany, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF53D89E9771FADCFC29FD76.taxon	description	Figs 212, 443 – 444	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF53D89E9771FADCFC29FD76.taxon	diagnosis	Diagnosis The mostly black mesepisternum seems to distinguish E. styx from the others in the group. Most of the studied specimens from Finland have a dark brown pterostigma with a small pale area at the base, but the holotype of styx Benson and a specimen from Oulu (ZMUO. 033769) have a uniformly yellowish pterostigma like the other species of the group. The specimen of E. styx with a yellowish pterostigma is not genetically different from those with a dark pterostigma. Based on the specimen NG. 1551 (432 bp of COI is identical to all the other sequenced specimens of styx and clearly different from the other species) and a paratype of styx, the penis valve is most similar to E. pallescens. Ventroapical lobe of paravalva is asymmetrical (dorsal margin straight and ventrally convex) in E. styx, but more or less symmetrical in E. pallescens.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF53D89E9771FADCFC29FD76.taxon	materials_examined	Type material examined Holotype Pachynematus styx GERMANY – Niedersachsen • ♀; Sieber; 51.70 ° N, 10.43 ° E; 600 m a. s. l.; 1955; W. Thalenhorst leg.; reared ex larva from Picea abies; BMNH, B. M. TYPEHYM. 1.791.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF53D89E9771FADCFC29FD76.taxon	biology_ecology	Host plants Picea abies (Benson 1958 b). One generation per year.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF53D89E9771FADCFC29FD76.taxon	description	Genetics COI Based on 4 specimens, maximum within-species distance is 0.15 % and the nearest neighbour, diverging by a minimum of 1.98 %, is Euura pallescens group specimen DEI-GISHym 80693 from Primorsky Krai. Nuclear Based on 4 specimens, maximum within-species distance is 0.06 % (0.18 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.71 %, is Euura montana.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF53D89E9771FADCFC29FD76.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland and Germany.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF54D89E9768FCC1FB8DFAC5.taxon	description	Bifid claws, short and narrow valvula 3 in dorsal view, pale elongate pterostigma, extensively pale body and structure of lancet (radix about as long as lamnium, setae long, basalmost annulus roughly 0.5 times as long as broad, basal sutures in dorsal part inclined basally and apical sutures apically) distinguish the females from those of the other Euura. Males are also extensively pale. Penis valves can be distinguished from the other Euura. Penis valve length 1.1 – 1.3 mm, paravalva broader apically than basally, ventral and anterior margins of paravalva distinctly angled, straight and rather narrow and long valvispina, symmetrically narrowing and round pseudoceps at apex, ventroapical margin of paravalva broad, inclined basally and without distinct invagination between paravalva and valvispina, basal third of valvar strut merging with ventral margin of paravalva. Euura papillosa group females lay eggs on the underside (abaxial) surface of leaves (Urban 2001), in contrast to most other Euura that lay eggs inside the leaf or petiole tissue. This habit of egg laying is shared with E. spiraeae (Robbins 1927; Hara et al. 2022) and the ribesii group (Viitasaari 1980) with a similar type of lancet. Euura hypoxantha and E. jugicola (myosotidis group) also have a similar type of lancet, but egg laying habits of these species have not been described to our knowledge. Two species are recognised.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF54D89F9750FA94FEAAF93D.taxon	description	Figs 208, 445	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF54D89F9750FA94FEAAF93D.taxon	diagnosis	Diagnosis Dorsally mostly black colouration distinguishes the females from closely related E. pavida (dorsally extensively pale). The pale parts of the abdomen of living E. papillosa females are also usually (always?) green, rather than yellow in E. pavida. Males might not be clearly distinguishable from E. pavida. A mitochondrial genome in GenBank (MZ 726800, named as Euura bridgmanii, voucher ZYT- 202105 - 02) that was published as Pontania dolichura (Sun et al. 2022) belongs to E. papillosa. This was confirmed based on the nuclear sequences extracted from the raw Illumina data of the voucher ZYT- 202105 - 02 (NCBI Sequence Read Archive accession SRR 15883156).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF54D89F9750FA94FEAAF93D.taxon	materials_examined	Type material examined Lectotype Nematus melanaspis, here designated GERMANY • ♀; northern Germany [according to Hartig 1840: 22]; ZSM, GBIF-GISHym 3345. Lectotype Nematus lacteus, here designated SWEDEN – Skåne • ♀; Lund; 55.71 ° N, 13.19 ° E; MZLU, MZLU 2017317. Holotype Pteronidea sveae FINLAND – Uusimaa • ♀; Helsinki, Munksnäs [Munkkiniemi]; 60.22 ° N, 24.89 ° E; 5 Aug. 1956; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 3508.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF54D89F9750FA94FEAAF93D.taxon	biology_ecology	Host plants A wide spectrum of species of Salix, Populus tremula (Pschorn-Walcher & Altenhofer 2000), P. nigra L. and hybrid poplar cultivars (Chambers 1952; Chevin & Savina 2016).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF54D89F9750FA94FEAAF93D.taxon	description	Genetics COI Based on 29 specimens, maximum within-species distance is 4.92 % and the nearest neighbour, diverging by a minimum of 2.74 %, is Euura pavida. Nuclear Based on 4 specimens, maximum within-species distance is 0.57 % (0.12 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.62 %, is Euura pavida.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF54D89F9750FA94FEAAF93D.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Austria, China (only genetics), Finland, Germany, Japan, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF55D89C975FF93CFEDBF88F.taxon	description	Figs 209, 446 – 447	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF55D89C975FF93CFEDBF88F.taxon	diagnosis	Diagnosis Closest to E. papillosa, see differences discussed under that species.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF55D89C975FF93CFEDBF88F.taxon	materials_examined	Type material examined Lectotype Nematus cylindricus, here designated GERMANY • ♀; northern Germany [according to Hartig 1840: 22]; ZSM, GBIF-GISHym 3248. Notes Most paralectotypes are also E. pavida, but apparently include also E. gracilidentata (GBIFGISHym 3249, 3250, and maybe 3256) and E. similator (GBIF-GISHym 3255). Lectotype Pteronidea pavida var. notanda, here designated FRANCE – Basse-Normandie • ♀; Lisieux; A. Loiselle leg.; ZSM, GBIF-GISHym 3364.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF55D89C975FF93CFEDBF88F.taxon	biology_ecology	Host plants A wide spectrum of species of Salix, but S. caprea is a preferred host; occasionally on Populus tremula, whereas mentions of Alnus spp. are probably the result of misidentification (Pschorn-Walcher & Altenhofer 2000).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF55D89C975FF93CFEDBF88F.taxon	description	Genetics COI Based on 12 specimens, maximum within-species distance is 0.61 % and the nearest neighbour, diverging by a minimum of 2.74 %, is Euura papillosa. Nuclear Based on 4 specimens, maximum within-species distance is 0.15 % (0.03 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.62 %, is Euura papillosa.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF55D89C975FF93CFEDBF88F.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Austria, Belgium, Bulgaria, Finland, France, Germany, Norway, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF56D89D9767F8CAFA9FFE39.taxon	description	This clade comprises most of the former Amauronematus, including the former Pontopristia (amentorum group), but not Brachycoluma (viduata group), and is mainly defined based on genetic data (Fig. 3 A). Members tend to have a characteristic “ Amauronematus ” - type head (e. g., Fig. 86), i. e., medial surface of head near antennal sockets is not distinctly elevated or angular below medial pit. Various other species have sometimes been included in Amauronematus because of a similar type of head (e. g., E. anthracina, E. fahraei, various members of E. bipartita and flavescens groups), but these are genetically more distant. The following groups are included: aegra, amentorum, histrio, humeralis, longiserra, opacipleuris, punicea s. str., toeniata, tunicata, variator, vittata, and Euura brunnea not assigned to a group.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF57D89D979CFE30FC57FBCA.taxon	description	Four species are recognized. Most specimens are more or less black, but females of E. aegra and E. lindqvisti can have an extensively reddish mesepisternum and the abdomen ventrally and apically extensively pale. Euura aegra and E. hebes have a “ Pristiphora - type ” valvula 3 (i. e., with a distinct and deep invagination posteriorly), which by itself distinguishes these species from most other Euura. In addition, their “ Amauronematus - type ” head, bifid claws, matt mesepisternum, and structure of the saws help to distinguish these two species from the few other Euura with a similar, but less deeply invaginate valvula 3, and from Pristiphora. The valvula 3 of Euura lindqvisti is similar to most other Euura, so that the species could most easily be confused with E. nimbus and darker specimens of E. sagmarius, but again the “ Amauronematus - type ” head, bifid claws, matt mesepisternum, and its saw structure should enable its separation from the other species. Euura sempersolis is the darkest of the four species and has valvula 3 “ intermediate ” between E. aegra-hebes and E. lindqvisti (i. e., without distinct invagination and not as long and pointed as in E. lindqvisti), but the saw is rather similar to E. aegra and E. hebes. Males within the group are also mostly black and very similar to each other or even to some other groups that are closely related (former Amauronematus). We have not attempted here to distinguish the males morphologically, although this might be possible after examination of greater numbers of specimens, instead, we have used nuclear genes to associate them with females.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF57D8829746FB8DFBF7FD1A.taxon	description	Figs 230, 454	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF57D8829746FB8DFBF7FD1A.taxon	diagnosis	Diagnosis Mostly black, brown or pale pterostigma, “ Amauronematus - type ” head, bifid claws, square-shaped valvula 3 with distinct invagination. Most similar species is E. hebes (character states in parentheses), from which it differs by having smoother mesepisternum (usually strongly matt) and paler pronotum (completely black or nearly so). Males possibly not clearly distinguishable from other aegra group species. Females sometimes with extensively brown mesepisternum and head (e. g., ZMUO. 031774, ZMUO. 031807).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF57D8829746FB8DFBF7FD1A.taxon	materials_examined	Type material examined Lectotype Amauronematus aeger GERMANY • ♀; Thüringen; SDEI, GBIF-GISHym 4086. Holotype Amauronematus dalecarlicus SWEDEN – Dalarna • ♀; Säter; 60.312 ° N, 15.524 ° E; E. Klefbeck leg.; NHRS, NHRS-HEVA 000003833.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF57D8829746FB8DFBF7FD1A.taxon	biology_ecology	Host plants Betula pubescens. According to Kangas (1985) also B. pendula.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF57D8829746FB8DFBF7FD1A.taxon	description	Genetics COI Based on 6 specimens, maximum within-species distance is 3.5 % and the nearest neighbour, diverging by a minimum of 0 %, is Euura lindqvisti. Nuclear Based on 6 specimens, maximum within-species distance is 0.14 % (0.29 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.2 %, is Euura lindqvisti.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF57D8829746FB8DFBF7FD1A.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Germany, Norway, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF48D8839746FD5CFC7FFB6C.taxon	description	Figs 230, 454	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF48D8839746FD5CFC7FFB6C.taxon	diagnosis	Diagnosis Mostly black, brown or pale pterostigma, “ Amauronematus - type ” head, bifid claws, square-shaped valvula 3 with distinct invagination. Most similar species is E. aegra (character states in parentheses), from which it differs by having more matt mesepisternum (usually weakly matt) and darker pronotum (usually extensively pale). Males possibly not clearly distinguishable from other aegra group species. Although pribaicalicus, pristiphoroides, and albomarginata have colouration (pronotum and clypeus usually at least partly pale, valvula 3 completely or mostly black) and mesepisternum sculpture (slightly matt) more similar to aegra than hebes (pronotum and clypeus completely or nearly completely black, valvula 3 extensively pale; mesepisternum strongly matt) we consider these nominal taxa as synonyms of hebes based on the saw, host plant, and genetics. Based on the description provided by Zinovjev & Schmidt (1994), colouration of harpicola (reared from Salix) seems overall more similar to pribaicalicus than hebes, but colouration of the sawsheath (valvula 3) fits with typical hebes. Saws of the above-mentioned nominal taxa do not seem to be different. The species is not monophyletic based on current sampling of nuclear genes, but this is the case even for individual females when haplotypes of nuclear genes are separated, indicating incomplete lineage sorting and not necessarily the presence of additional species.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF48D8839746FD5CFC7FFB6C.taxon	materials_examined	Type material examined Lectotype Amauronematus hebes SWEDEN • ♀; Northern Lapland; SDEI, GBIF-GISHym 4093. Holotype Amauronematus pristiphorinus SWEDEN – Torne Lappmark • ♀; Torneträsk; 68.22 ° N, 19.74 ° E; 400 m a. s. l.; R. Malaise leg.; NHRS, NHRS-HEVA 000003841. Holotype Amauronematus pribaicalicus RUSSIA – Irkutskaja oblast • ♀; Irkutsk, Oljhonsk, Popovo; 52.741 ° N, 106.309 ° E; 10 Apr. 1968; B. N. Verzhutskij leg.; MZH, http: // id. luomus. fi / GL. 5128. Holotype Amauronematus pristiphoroides RUSSIA – Kamchatka oblast • ♀; Nischne-Kamtchatsk, Lake Azhabachye; 56.166 ° N, 161.893 ° E; R. Malaise leg.; NHRS, NHRS-HEVA 000006425. Holotype Pristiphora albomarginata FINLAND – Kittilä Lapland • 1 ♀; Muonio, Pallastunturi; 68.100 ° N, 23.999 ° E; 13 Jun. 1967; O. Ranin leg.; MZH, http: // id. luomus. fi / GL. 3403. Notes A COI sequence (658 bp) of the holotype is most similar to DEI-GISHym 19918 (E. hebes).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF48D8839746FD5CFC7FFB6C.taxon	biology_ecology	Host plants Salix sp. or spp. (Kontuniemi 1960): at least grey-leaved species are hosts.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF48D8839746FD5CFC7FFB6C.taxon	description	Genetics COI Based on 19 specimens, maximum within-species distance is 4.1 % and the nearest neighbour, diverging by a minimum of 0.15 %, is Euura lindqvisti. Nuclear Based on 13 specimens, maximum within-species distance is 0.73 % (0.65 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.18 %, is Euura lindqvisti.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF48D8839746FD5CFC7FFB6C.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Russia, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF49D8809754FAECFC7FFB39.taxon	description	Figs 233, 457	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF49D8809754FAECFC7FFB39.taxon	diagnosis	Diagnosis From mostly black to extensively pale (black or extensively pale mesepisternum), brown pterostigma with some pale basally, centrally or anteriorly, “ Amauronematus - type ” head, bifid claws, elongate gradually narrowing valvula 3 without invagination, malar space about 1.4 – 1.5 times as long as diameter of front ocellus (females). Externally, the most similar species are viduata group, opacipleuris group, darker species of miltonota group, E. berolinensis, and E. nigriventris. Length of malar space and structure of the lancet (with 17 – 20 serrulae, practically without microdenticles, long setae) distinguish it from the similar species. Males possibly not clearly distinguishable from other aegra group species. Lectotype of lindqvisti GP. 110166: mesepisternum upper half reddish, tegula pale (like holotype edenticulatus from Salix), not reared. A specimen of edenticulatus (non-type) from Irkutsk reared from Betula (GP. 110176) has pale tegula but black mesepisternum. Specimen from Finland reared from Betula (GP. 110168) has black tegula and black mesepisternum. Among the type series of lindqvisti most specimens have black mesepisternum, but tegula varies continuously from black to pale. All specimens with slightly or extensively pale mesepisternum have pale tegula. Unless two similar species are involved, E. lindqvisti may feed both on Salix and Betula (Tenow 1963).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF49D8809754FAECFC7FFB39.taxon	materials_examined	Type material examined Lectotype Amauronematus lindqvisti, here designated FINLAND – Inari Lapland • ♀; Utsjoki, Outakoski; 69.61 ° N, 25.98 ° E; 14 Jun. 1947; W. Hellén leg.; MZH, http: // id. luomus. fi / GP. 110166. Holotype Amauronematus edenticulatus RUSSIA – Irkutskaja oblast • ♀; Irkutsk, Oljhonsk, Popovo; 52.741 ° N, 106.309 ° E; 13 Apr. 1968; B. N. Verzhutskij leg.; MZH, http: // id. luomus. fi / GL. 5129.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF49D8809754FAECFC7FFB39.taxon	biology_ecology	Host plants Mainly Betula spp., including B. nana and B. pubescens, but apparently also Salix spp. (Tenow 1963; holotype of edenticulatus).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF49D8809754FAECFC7FFB39.taxon	description	Genetics COI Based on 7 specimens, maximum within-species distance is 2.13 % and the nearest neighbour, diverging by a minimum of 0 %, is Euura aegra. Nuclear Based on 5 specimens, maximum within-species distance is 0.29 % (0.41 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.18 %, is Euura hebes.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF49D8809754FAECFC7FFB39.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Russia, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4AD886972CFB30FA8DFE5D.taxon	description	Figs 232, 456	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4AD886972CFB30FA8DFE5D.taxon	diagnosis	Diagnosis Nearly completely black, brown or pale pterostigma, “ Amauronematus - type ” head, bifid claws, valvula 3 short and somewhat triangular. Most similar species are dark specimens of the tillbergi group and E. hebes, from which it can be distinguished by the structure of the saw (serrulae basally with small but distinct protrusion and with large space between serrulae). Additionally, valvula 3 does not have a distinct invagination (present in E. hebes). Males possibly not clearly distinguishable from other aegra group species.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4AD886972CFB30FA8DFE5D.taxon	materials_examined	Type material examined Lectotype Amauronematus sempersolis, here designated NORWAY – Finnmark • ♀; Sør-Varanger, Strand; 69.524 ° N, 29.978 ° E; Jun. 1892; S. Schneider leg.; MZH, http: // id. luomus. fi / GL. 5237. Holotype Amauronematus tristis FINLAND – Kittilä Lapland • ♀; Muonio, Pallastunturi; 68.100 ° N, 23.999 ° E; 22 Jun. 1942; W. Hellén leg.; MZH, http: // id. luomus. fi / GL. 2759. Notes Kiaer (1898) wrote that he described Amauronematus sempersolis from a syntype series of four individuals of both sexes collected by Sparre Schneider in Sydvaranger, northern Norway, in June 1892. Lindqvist (1959 d) discussed five (!) presumed syntype specimens (4 females, 1 male) of A. sempersolis borrowed from Tromsø Museum. He wrote that they belonged to four different taxa and that none of them agreed with Kiaer’s description, except possibly the male, which he identified as belonging to the Euura histrio species group, and that therefore the females could not be syntypes. He did not designate a lectotype, and concluded by stating that he was unable to identify Kiaer’s species from the description. All these specimens had apparently been previously examined by O. Conde in 1939, according to corresponding determination labels (Lindqvist 1959 d). Lindqvist (1973) again discussed the potential syntypes of A. sempersolis, but this time in the light of an additional female specimen which at that time was in the collection of W. Hellén. This is almost certainly the specimen currently in the FMNH collection, designated above as lectotype, because both Hellén (1970) and Lindqvist (1973) cite different parts of the determination label (http: // id. luomus. fi / GL. 5237) written by O. Conde in 1939. Hellén also mentioned that the specimen is labelled “ Strand 1892 ”. Note that “ Strand ” certainly refers to the collection locality, not to Embrik Strand, the well-known Norwegian naturalist. Although the specimen now designated as lectotype was already labelled as such by an unknown person, there is no unequivocally valid previously published designation. Hellén (1970), referred to this specimen as [translated from German] “ the female specimen (Strand 1892) marked as ‘ type’ by Conde ”, but did not make clear whether the male syntype had also been labelled by Conde as a type. Lindqvist (1973) ended his text on A. sempersolis with the commentary [translated]: “ As regards the type selected by Conde, which in his opinion should be identical to hebes, one must emphasise that this specimen does not represent the true hebes, but A. tristis described by me (1959 d: 9). The sawsheath of this species [tristis] and the matt mesopleura agree with Kiaer’s description, whereas the labrum and the tegulae are always completely black, which differs from the sempersolis description. The type selected by Conde and identified as hebes can accordingly not be accepted as [belonging to the syntype series of] sempersolis ”. Thus, Lindqvist’s comments cannot be regarded as a lectotype designation. It seems that Conde and Lindqvist were correct in regarding the type series of A. sempersolis as consisting of more than one species, but we disagree with the opinion of Lindqvist (1973), that the female now designated as lectotype significantly differs from Kiaer’s description in two colour characters, and is therefore not part of the syntype series. Firstly, the labrum of the A. sempersolis lectotype is indeed markedly paler than the rest of the head, but the labrum of A. tristis is not “ always black ” as claimed by Lindqvist (1973). We have examined many specimens with a more or less pale labrum, and Lindqvist (1959 d) himself even noted such colouration in his description of A. tristis [translated from German]: “ Labrum [..] occasionally blackened ”. Secondly, Kiaer (1898) wrote [translated from Latin]: “ [..] variably orbits of eyes, tegulae, angles of pronotum [..] more or less testaceous ”. Because of his use of the words “ variably ” and “ more or less testaceous ”, this description does not preclude the existence of syntype specimens with at least extensively black tegulae. Admittedly, the sempersolis lectotype has completely black tegulae, but because all other characters in Kiaer’s description fit, we find it unreasonable to reject its original status as a syntype merely because of this trivial discrepancy. Furthermore, it is possible that Kiaer mistook the large and pale humeral plates of the lectotype for the tegulae.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4AD886972CFB30FA8DFE5D.taxon	biology_ecology	Host plants Probably monophagous on Betula nana.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4AD886972CFB30FA8DFE5D.taxon	description	Genetics COI Based on 11 specimens, maximum within-species distance is 2.44 % and the nearest neighbour, diverging by a minimum of 0.76 %, is Euura hebes. Nuclear Based on 8 specimens, maximum within-species distance is 0.18 % (0.15 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.2 %, is Euura lindqvisti.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4AD886972CFB30FA8DFE5D.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Norway, Sweden, and the United Kingdom.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4CD8869778FE1CFDD1FC97.taxon	description	The species group was revised by Liston et al. (2023): see there for details of type material, synonymy, host plants, distribution, and identification characters. Based on the penis valves drawn by Lindqvist (1961 a), fig. 22 refers to a species in the bipartita group (possibly, e. g., E. leucopyga), figs 23 – 24, and possibly 20 refer to species in the flavescens group (most likely E. lienterica or E. reticulata). Lindqvist (1961 a: figs 18 – 19, 21) refer to the amentorum group, and possibly to the correct species.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4CD8869725FCA3FEF2FB98.taxon	description	Figs 222, 448 Notes The COI sequence (563 bp) of a male (http: // id. luomus. fi / GP. 110189) is closest to the female ZMUO. 038756.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4CD8879799F907FB2AFE65.taxon	description	We recognize 16 species of the histrio group in the West Palaearctic, only one of which (E. elbrus, if it is a valid species) may be absent in Fennoscandia. Based on our sequencing data, there could be one or two additional species in the West Palaearctic, but also one or two additional synonyms. The few potentially additional species cannot be morphologically clearly distinguished from E. striata, E. tenuis and / or E. septentrionalis. Neither are they genetically so distinct that separate species status is unambiguously indicated. If the one or two additional lineages are not distinct species, it is unclear under which species these should be classified. One of the lineages is perhaps not E. septentrionalis (which is on Betula), because many of the specimens have been reared from Salix. Euura amicula, E. hartigi, E. histrio, E. nigrina, E. nuorbinjargi, E. propinquator, E. rufa, E. schlueteri, E. stenogaster, and E. histriato Prous, Liston & Mutanen sp. nov. can be relatively well defined based on colouration, valvula 3 and / or lancets. These species are also well supported or at least not contradicted by nuclear data (no genetic data for E. nigrina) and often also based on host plants. Males of most species are more difficult to recognize than females, and we have largely relied on nuclear data to associate them.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4DD887972EFDF5FC10F9FB.taxon	description	Figs 234, 458	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4DD887972EFDF5FC10F9FB.taxon	diagnosis	Diagnosis Extensively pale species (can be pink in life), but darker (median mesoscutal lobe and mesoscutellar appendage at least partly black) than E. rufa (median mesoscutal lobe and mesoscutellar appendage pale). Some specimens of E. striata are similarly pale, but have lamnium 1.6 – 1.7 times as long as radix (2.0 – 2.2 times as long in E. amicula, n = 2).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4DD887972EFDF5FC10F9FB.taxon	materials_examined	Type material examined Holotype Amauronematus amicula FINLAND – Inari Lapland • ♀; Utsjoki, Outakoski; 69.61 ° N, 25.98 ° E; 19 Jun. 1947; A. Saarinen leg.; MZH, http: // id. luomus. fi / GL. 3586.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4DD887972EFDF5FC10F9FB.taxon	biology_ecology	Host plants Salix phylicifolia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4DD887972EFDF5FC10F9FB.taxon	description	Genetics COI Based on 21 specimens, maximum within-species distance is 2.74 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura nuorbinjargi, E. striata, E. tenuis, E. tota, E. betulae (DEIGISHym 80673 from Primorsky Krai), E. histrio, E. rufa, and E. septentrionalis. Nuclear Based on 19 specimens, maximum within-species distance is 0.97 % (0.91 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.15 %, is Euura striata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4DD887972EFDF5FC10F9FB.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4DD8849757F97DFC03FB1E.taxon	description	Fig. 235	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4DD8849757F97DFC03FB1E.taxon	diagnosis	Diagnosis The holotype is externally very similar to E. septentrionalis, but the lamnium is 1.5 – 1.6 times as long as the radix (holotype; DEI-GISHym 80673) compared to 1.8 – 1.9 (based on Schmidt 1997) or 2.0 – 2.2 (taiganus holotype, ZMUO. 037302) in E. septentrionalis. We have associated only one other specimen (DEI-GISHym 80673 from Primorsky Krai, Russia) with the holotype, based on the lancet and similar colouration. No males have been associated with the female.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4DD8849757F97DFC03FB1E.taxon	materials_examined	Type material examined Holotype Amauronematus betulae FINLAND – Kuusamo • ♀; Juuma; 66.27 ° N, 29.38 ° E; 16 Jun. 1985; M. Ahola leg.; MZH, http: // id. luomus. fi / GL. 2501.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4DD8849757F97DFC03FB1E.taxon	biology_ecology	Host plants Since the holotype (collected on 16 Jun. 1985 by M. Ahola) is not a reared specimen, the host is not known for certain. Schmidt (1997: 280) mentioned that in his oviposition experiments a female or females (number of specimens not given) laid eggs on Betula nana and B. pubescens, but rejected willows. We have not examined any such specimens.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4DD8849757F97DFC03FB1E.taxon	description	Genetics COI Only one sequence available. The nearest neighbours, diverging by a minimum of 0 %, are Euura amicula, E. histrio, E. nuorbinjargi, E. rufa, E. septentrionalis, E. striata, and E. tenuis. Nuclear Only one sequence available, a female with haplotypes diverging by 0.7 %. The nearest neighbour, diverging by a minimum of 0.07 %, is Euura histrio.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4DD8849757F97DFC03FB1E.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, and Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4ED885975CFB58FD79FDC5.taxon	description	Fig. 236	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4ED885975CFB58FD79FDC5.taxon	diagnosis	Diagnosis The saw is most similar to E. propinquator, although colouration of the abdomen (hind margins of dorsal parts of terga not as extensively pale as in E. propinquator) and the likely host plant might indicate a different species. Lamnium 1.4 (?) times as long as radix.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4ED885975CFB58FD79FDC5.taxon	materials_examined	Type material examined Holotype Nematus nivalis RUSSIA – Elbrus Region • ♀; Itkol; 43.25 ° N, 42.54 ° E; 2800 m a. s. l.; 9 Jul. 1971; ZMHB, dbcac 7 / GBIF-GISHym 2827.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4ED885975CFB58FD79FDC5.taxon	biology_ecology	Host plants Unknown, but probably not Salix repens L. (the host of E. propinquator), because the type specimens were collected above the tree line.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4ED885975CFB58FD79FDC5.taxon	description	Genetics COI No data. Nuclear No data.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4ED885975CFB58FD79FDC5.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4FD8859756FD93FB8FF835.taxon	description	Fig. 238	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4FD8859756FD93FB8FF835.taxon	diagnosis	Diagnosis Pale colouration and lancet (ventral margin apically distinctly convex) enable identification of the species. No males have been associated.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4FD8859756FD93FB8FF835.taxon	materials_examined	Type material examined Holotype Amauronematus hartigi GERMANY – Niedersachsen • ♀; Harz, Lautenthal; 51.867 ° N, 10.300 ° E; 29 May 1837; W. Saxesen leg.; ZSM, GBIF-GISHym 3677. Holotype Amauronematus glacialis FINLAND – Inari Lapland • ♀; Utsjoki, Outakoski; 69.61 ° N, 25.98 ° E; 9 Jun. 1947; A. Saarinen leg.; MZH, http: // id. luomus. fi / GL. 2495.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4FD8859756FD93FB8FF835.taxon	biology_ecology	Host plants Salix aurita (Schmidt 1997) and possibly some other species of Salix, because S. aurita is not present in Utsjoki (type locality of Amauronematus glacialis).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4FD8859756FD93FB8FF835.taxon	description	Genetics COI Based on 2 specimens, maximum within-species distance is 0.46 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura histrio, E. rufa, and E. schlueteri. Nuclear Based on 2 specimens, maximum within-species distance is 0.27 % (0.42 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.27 %, is Euura betulae (DEIGISHym 80673).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF4FD8859756FD93FB8FF835.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, France, and Germany.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF40D88B975FFEEEFEBCFC5F.taxon	description	Figs 239, 459	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF40D88B975FFEEEFEBCFC5F.taxon	diagnosis	Diagnosis Colouration and structure of valvula 3 enable identification of the species. Usually, the black first tergite (rarely extensively pale laterally), completely pale terga 3 – 5, and at least partly black terga 2 and 6 – 10 are enough to recognize the species. Black or dark brown pterostigma, usually completely or nearly completely black hind femur and tibia (sometimes anteriorly and posteriorly pale or brown), completely black or slightly pale (at base) cerci, black or laterobasally somewhat pale valvula 3, in lateral view more or less symmetrical (ventrally and dorsally curved to similar degree) valvula 3 help further to identify the females. Euura tota can sometimes also have abdomen with a red band (otherwise mostly black species), but pale tegula and usually at least slightly pale mesepisternum in E. histrio females can be used to distinguish them from E. tota. Males of E. tota with a red band might not be distinguishable from E. histrio.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF40D88B975FFEEEFEBCFC5F.taxon	description	Female 6.0 – 9.5 mm (rounded to nearest 0.5 mm from Schmidt 1997). Pterostigma black or dark brown; hind femur and tibia usually completely or nearly completely black, sometimes anteriorly and posteriorly pale or brown; first tergite black, rarely extensively pale laterally; middle terga (usually 3 – 5) completely pale, usually at least some of terga 2 and 6 – 10 partly black; sterna 2 – 6 pale; hypopygium pale or partly black; valvifer 2 black to pale; cerci completely black or slightly pale at base; valvula 3 black or basally somewhat pale in lateral view; valvula 3 more or less symmetrical in lateral view, ventrally and dorsally curved to similar degree. Male 5.5 – 8.0 mm (this study; Schmidt 1997). Pterostigma black, dark brown or centrally paler than externally; hind femur and tibia usually completely or nearly completely black, sometimes hind femur anteriorly and posteriorly pale and hind tibia basally pale or brown; first tergite black; middle terga (3 – 5) completely pale, terga 2 and 6 – 8 usually mostly black; sternum 9 black, other sterna pale.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF40D88B975FFEEEFEBCFC5F.taxon	materials_examined	Type material examined Lectotype Nematus rufescens GERMANY • ♀; Berlin area; 52 ° N, 13 ° E; ZSM, GBIF-GISHym 3049. Lectotype Amauronematus histrio var. nigrescens, here designated GERMANY – Bayern • ♀; Erlangen; 49.58 ° N, 10.98 ° E; 13 Apr. 1914; E. Enslin leg.; ZSM, GBIFGISHym 3689. Holotype Amauronematus histrio var. fallaciosus GERMANY – Bayern • ♀; Ebenhausen; 50.131 ° N, 10.138 ° E; 8 Apr. 1912; ZSM, GBIF-GISHym 3688.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF40D88B975FFEEEFEBCFC5F.taxon	biology_ecology	Host plants Salix caprea, S. aurita, S. cinerea L. (Schmidt 1997).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF40D88B975FFEEEFEBCFC5F.taxon	description	Genetics COI Based on 12 specimens, maximum within-species distance is 1.06 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura stenogaster, E. tota, E. amicula, E. betulae, E. nuorbinjargi, E. rufa, E. septentrionalis, E. striata, E. tenuis, E. hartigi, and E. schlueteri. Nuclear Based on 11 specimens, maximum within-species distance is 1.03 % (0.82 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.07 %, is Euura betulae (DEIGISHym 80673).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF40D88B975FFEEEFEBCFC5F.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Bulgaria, Estonia, Finland, France, Germany, and the United Kingdom.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF41D88B9754FC1AFD76F803.taxon	description	Fig. 240	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF41D88B9754FC1AFD76F803.taxon	diagnosis	Diagnosis Long valvula 3, structure of the lancet (straight and slightly convex ventral margin), and rather dark colouration distinguishes the species from the others in the histrio group. Males unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF41D88B9754FC1AFD76F803.taxon	materials_examined	Type material examined Holotype Amauronematus nigrinus NORWAY – Finnmark • ♀; Tana Bru; 70.20 ° N, 28.17 ° E; 6 Jun. 1991; S. Schmidt leg.; MZH, http: // id. luomus. fi / GL. 2494.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF41D88B9754FC1AFD76F803.taxon	biology_ecology	Host plants Salix lanata (Schmidt 1997).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF41D88B9754FC1AFD76F803.taxon	description	Genetics COI No data. Nuclear No data.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF41D88B9754FC1AFD76F803.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Norway.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF42D8889733FEEEFC10F89F.taxon	description	Figs 241, 460	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF42D8889733FEEEFC10F89F.taxon	diagnosis	Diagnosis Females can be identified based on the colour pattern. Median mesoscutal lobe and mesoscutellar appendage are at least partly black, the first tergite is usually completely black and subsequent tergites with sharply decreasing black area (if the first tergite is mostly pale, then subsequent tergites are completely pale). Males have similar colouration, but might not always be distinguishable from, for example, the males of E. rufa. Female 6.8 – 8.8 mm (Schmidt 1997). Pterostigma usually pale, brown or centrally paler than externally; hind femur extensively pale, usually only dorsally black; hind tibia black or anteriorly and posteriorly pale or brown; usually first tergite completely black and subsequent terga with black flecks decreasing in size, sometimes abdomen nearly completely pale; sterna, hypopygium, and valvifer 2 pale; cerci extensively pale at least basally; valvula 3 extensively pale or brown; valvula 3 asymmetrical in lateral view, ventrally more distinctly curved than dorsally. Male 5.5 – 7.0 mm (this study; Schmidt 1997). Pterostigma centrally paler than externally; hind femur and tibia usually extensively pale (only dorsally black), sometimes nearly completely black; first tergite completely black and subsequent terga with black transverse lines decreasing in size; all sterna pale.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF42D8889733FEEEFC10F89F.taxon	materials_examined	Type material examined Holotype Amauronematus nuorbinjargi FINLAND – Inari Lapland • ♀; Utsjoki, Nuorbinjarg; 69.60 ° N, 25.97 ° E; 23 Jun. 1947; A. Saarinen leg.; MZH, http: // id. luomus. fi / GL. 2588.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF42D8889733FEEEFC10F89F.taxon	biology_ecology	Host plants Salix hastata L.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF42D8889733FEEEFC10F89F.taxon	description	Genetics COI Based on 8 specimens, maximum within-species distance is 0.61 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura amicula, E. betulae, E. histrio, E. rufa, E. septentrionalis, E. striata, E. tenuis, and E. tota. Nuclear Based on 8 specimens, maximum within-species distance is 0.5 % (0.43 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.5 %, is Euura histrio.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF42D8889733FEEEFC10F89F.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF42D889973DF8DAFD75FA97.taxon	description	Fig. 237	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF42D889973DF8DAFD75FA97.taxon	diagnosis	Diagnosis Ventrally concave lancet and lamnium 1.3 times as long as radix (n = 2) distinguishes E. propinquator from the others in the histrio group.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF42D889973DF8DAFD75FA97.taxon	materials_examined	Type material examined Holotype Amauronematus propinquus FINLAND – Häme • ♀; Loppi; 60.72 ° N, 24.44 ° E; 1 Jun. 1941; A. Saarinen leg.; MZH, http: // id. luomus. fi / GL. 2514. Notes Best morphological match: DEI-GISHym 84201.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF42D889973DF8DAFD75FA97.taxon	biology_ecology	Host plants Salix repens rosmarinifolia (L.) Hartman Fil. (Schmidt 1997).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF42D889973DF8DAFD75FA97.taxon	description	Genetics COI Only one sequence available. The nearest neighbour, diverging by a minimum of 0.61 %, is an unidentified Euura specimen from Oregon, USA (DEI-GISHym 12539). Nuclear Only one sequence available, a female with haplotypes diverging by 0.85 %. The nearest neighbour, diverging by a minimum of 0.05 %, is Euura striata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF42D889973DF8DAFD75FA97.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF43D88E974EFAA2FC03F9EB.taxon	description	Figs 242, 461 – 462	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF43D88E974EFAA2FC03F9EB.taxon	diagnosis	Diagnosis Females are usually almost completely pale reddish-yellow. Some specimens of E. amicula and E. striata can be almost as pale, but differ in having the median mesoscutal lobe and mesoscutellar appendage at least partly black (pale in E. rufa). An additional difference from E. striata is that the lamnium is 1.9 – 2.3 times as long as radix (usually 1.6 – 1.7 in E. striata). Males are extensively pale ventrally and most similar to E. nuorbinjargi, but the abdomen of E. rufa is usually distinctly darker (usually nearly completely black) dorsally. Female 7.5 – 9.5 mm (this study; Schmidt 1997). Head, except flagellum, completely pale; pterostigma pale; hind femur completely pale or somewhat brown dorsally and ventrally; hind tibia pale with dorsal brown or black margin; thorax completely pale or with some black markings; abdomen nearly completely pale or terga with dorsal black flecks decreasing in size from base to apex; valvula 3 pale with brown or black external margin; cerci basally pale; valvula 3 asymmetrical in lateral view, ventrally distinctly more curved than dorsally. Lamnium 1.9 – 2.3 times as long as radix (DEI-GISHym 80679, ZMUO. 037286). Male 6.5 – 7.5 mm.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF43D88E974EFAA2FC03F9EB.taxon	materials_examined	Type material examined Lectotype Amauronematus rufus RUSSIA – Irkutskaja oblast • ♀; Irkutsk; 52.29 ° N, 104.24 ° E; B. E. Jakowleff leg.; SDEI, DEIGISHym 12529. Lectotype Nematus exoletus, here designated RUSSIA • ♀; in promontoriis Uralensibus [in the foothills of the Ural]; ZMHB, GBIF-GISHym 2770.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF43D88E974EFAA2FC03F9EB.taxon	biology_ecology	Host plants Salix pentandra.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF43D88E974EFAA2FC03F9EB.taxon	description	Genetics COI Based on 6 specimens, maximum within-species distance is 1.37 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura hartigi, E. histrio, E. schlueteri, E. amicula, E. betulae, E. nuorbinjargi, E. septentrionalis, E. striata, E. tenuis, and E. stordalensis. Nuclear Based on 6 specimens, maximum within-species distance is 1.22 % (0.6 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.17 %, is Euura striata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF43D88E974EFAA2FC03F9EB.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, and Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF44D88F9753F96EFC10F9F6.taxon	description	Figs 243, 463	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF44D88F9753F96EFC10F9F6.taxon	diagnosis	Diagnosis Its characteristically short valvula 3 is the best morphological character for recognizing E. schlueteri, but this distinction is not always clear with respect to the other species with similar colouration (particularly E. striata). The unusual host (Vaccinium) for the Euura histrio group and nuclear data additionally support the distinctness of the species. Males might not be clearly distinguishable from most of the other species.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF44D88F9753F96EFC10F9F6.taxon	materials_examined	Type material examined Lectotype Amauronematus schlueteri SWEDEN – Lule Lappmark • ♀; Njunjes; 66.96 ° N, 17.45 ° E; 30 Jun. 1914; Schlüter leg.; ZSM, GBIF-GISHym 3056. Lectotype Amauronematus lundbohmi, here designated SWEDEN – Torne Lappmark • ♀; Torneträsk; 68.22 ° N, 19.74 ° E; 400 m a. s. l.; R. Malaise leg.; NHRS, NHRS-HEVA 000003924. Notes Sawsheath about 0.9 – 1.0 times as long as hind femur with trochantellus in the lectotype. Lectotype Amauronematus uliginosae, here designated SWEDEN – Uppland • ♀; Resarö; 59.42 ° N, 18.35 ° E; R. Malaise leg.; NHRS, NHRS-HEVA 000003929. Notes Sawsheath of lectotype about 0.8 – 0.9 times as long as hind femur with trochantellus.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF44D88F9753F96EFC10F9F6.taxon	biology_ecology	Host plants Vaccinium myrtillus, V. uliginosum (Schmidt 1997).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF44D88F9753F96EFC10F9F6.taxon	description	Genetics COI Based on 10 specimens, maximum within-species distance is 0.76 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura rufa, E. striata, E. stordalensis, E. hartigi, and E. histrio. Nuclear Based on 8 specimens, maximum within-species distance is 0.28 % (0.3 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.37 %, is Euura striata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF44D88F9753F96EFC10F9F6.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF45D88C9706F941FBE8F900.taxon	description	Figs 249, 464	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF45D88C9706F941FBE8F900.taxon	diagnosis	Diagnosis Morphologically very similar to E. striata and E. tenuis. Lamnium 1.9 – 2.2 times as long as radix seems to distinguish the females from those of E. striata (usually 1.6 – 1.7 times as long). Euura tenuis seems to be usually somewhat smaller (5.5 – 8.0 (8.8) mm; this study; Schmidt 1997) and have a darker pterostigma (dark brown or grey) than E. septentrionalis (( 7.1) 8.0 – 9.7 mm, pterostigma centrally pale brown; this study; Schmidt 1997) but otherwise morphological differences between the species are unclear. Nuclear data and the different host plants support separation of E. septentrionalis (Betula) from E. tenuis (Salix). Since the species is morphologically poorly defined, it is uncertain whether the holotype of septentrionalis is conspecific. The lancet of the holotype of Euura betulae (not reared; lamnium 1.5 – 1.6 times as long as radix) does not seem to fit with that of E. septentrionalis. Valvula 3 rather narrow in dorsal view, asymmetrical in lateral view. Dorsal setae of annuli 3 – 4 shorter than half length of corresponding annulus. Lamnium 1.8 – 1.9 times as long as radix (based on Schmidt 1997), 2 (taiganus holotype), 2.1 – 2.2 (ZMUO. 037302).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF45D88C9706F941FBE8F900.taxon	materials_examined	Type material examined Holotype Amauronematus septentrionalis FINLAND – Inari Lapland • ♀; Utsjoki, Outakoski; 69.61 ° N, 25.98 ° E; 10 Jun. 1947; A. Saarinen leg.; MZH, http: // id. luomus. fi / GL. 2776. Holotype Nematus taiganus RUSSIA – Magadan oblast • ♀; Magadan; 59.56 ° N, 150.82 ° E; 16 Jun. 1963; A. Zhelochovtsev leg.; ZIN, DEI-GISHym 89536. Notes The holotype of taiganus resembles the holotype of septentrionalis very closely.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF45D88C9706F941FBE8F900.taxon	biology_ecology	Host plants Betula nana.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF45D88C9706F941FBE8F900.taxon	description	Genetics COI Based on 10 specimens, maximum within-species distance is 1.98 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura tota, E. amicula, E. betulae, E. histrio, E. nuorbinjargi, E. rufa, E. striata, and E. tenuis. Nuclear Based on 10 specimens, maximum within-species distance is 0.24 % (0.49 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.36 %, is Euura histrio group specimen ZMUO. 045035 (perhaps E. striata).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF45D88C9706F941FBE8F900.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Norway, Russia, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF46D88D9727F948FE3DF940.taxon	description	Figs 244, 465	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF46D88D9727F948FE3DF940.taxon	diagnosis	Diagnosis Its usually mostly black body and structure of its lancet (middle part ventrally concave and slightly convex apically, lamnium 1.2 – 1.6 times as long as radix) enables identification of the species. Female 7.0 – 8.9 mm (this study; Schmidt 1997). Pterostigma pale; tegula mostly pale; hind femur black; hind tibia black or partly pale; mesepisternum black or with weak pale markings; abdomen dorsally black, laterally and sometimes ventrally pale; valvula 3 black and narrow in dorsal view, usually asymmetrical in lateral view; lamnium 1.2 – 1.6 times as long as radix (neotype, DEI-GISHym 4855, ZMUO. 030855).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF46D88D9727F948FE3DF940.taxon	materials_examined	Type material examined Neotype Nematus stenogaster GERMANY • ♀; Berlin area; 52 ° N, 13 ° E; C. Schirmer leg.; ZSM, GBIF-GISHym 3057. Lectotype Amauronematus analis RUSSIA – Irkutskaja oblast • ♂; Irkutsk; 52.29 ° N, 104.24 ° E; SDEI, GBIF-GISHym 4091. Holotype Amauronematus festivus FINLAND – Häme • ♀; Loppi; 60.72 ° N, 24.44 ° E; 22 May 1943; A. Saarinen leg.; MZH, http: // id. luomus. fi / GL. 3367.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF46D88D9727F948FE3DF940.taxon	biology_ecology	Host plants Salix repens, S. aurita.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF46D88D9727F948FE3DF940.taxon	description	Genetics COI Based on 6 specimens, maximum within-species distance is 1.52 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura histrio and E. tota. Nuclear Based on 5 specimens, maximum within-species distance is 0.66 % (0.31 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.35 %, is Euura histrio.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF46D88D9727F948FE3DF940.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Germany, and Russia. The records from North America require confirmation.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF47D8B39746F917FBF9FAB3.taxon	description	Figs 246 – 247, 466 – 468	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF47D8B39746F917FBF9FAB3.taxon	diagnosis	Diagnosis This common species is very variable in colouration (from mostly black to extensively pale), and we have mainly delimited it using nuclear data. Although also genetically variable and not monophyletic, there is little doubt that most of the specimens we have identified as E. striata share the same gene pool, as indicated by the existence of highly heterozygous females. The genetic distances between the heterozygous females are small (0 – 0.88 %, average 0.38 %), while distances to the other species are larger (average distance 1.1 %, minimum 0.15 %), except to E. propinquator (minimum distance 0.05 %) and E. tenuis (minimum distance 0 %). The genetic distances between the haploid males (9, one of them a haploid larva) are large (average distance 1 %), but these divergent gene variants co-exist in diploid females. The genetic variability is so large that a few conserved nuclear genes are enough to identify (nearly) every specimen. In colouration, E. striata can be similar to E. amicula, E. betulae, E. hartigi, E. propinquator, E. septentrionalis, E. stenogaster, E. tenuis, E. tota, and E. histriato sp. nov. Its lancet (ventrally concave, lamnium usually 1.6 – 1.7 times as long as radix) and valvula 3 (in dorsal view gradually narrowing and usually rather acute) can be used to separate E. striata from most of these species (see the relevant characters under E. amicula, E. hartigi, E. propinquator, E. stenogaster, E. tota, and E. histriato). Morphological differences from E. betulae, E. septentrionalis, and E. tenuis are less clear. The lamnium of Euura septentrionalis is 1.9 – 2.2 times as long as the radix, it feeds on Betula, and is also supported by differences in nuclear gene sequences. The lancet of E. betulae may be slightly different (ventrally slightly concave in middle part and slightly convex apically, lamnium 1.5 – 1.6 times as long as radix), but a clearer difference is evident in nuclear genes if the specimen DEI-GISHym 80673 is correctly associated with the holotype of betulae. Euura tenuis may also have a slightly different lancet (lamnium 1.9 times as long as radix), usually darker pterostigma (dark brown or grey), and might have different host preferences (Salix glauca, S. lapponum and maybe S. lanata), but is genetically not clearly different. However, some specimens, partly reared from grey willows, are genetically somewhat more distant to E. striata and E. tenuis (lancets Figs 250 – 251, penis valve Fig. 471). They have lancets more similar to E. tenuis (lamnium 1.8 times as long as radix, e. g., in ZMUO. 046519), but a pale brown pterostigma as in E. striata. Lamnium 1.4 times as long as radix (straight or slightly ventrally convex; ZMUO. 035392),? 1.4 – 1.5 (GBIF-GISHym 3058), 1.5 – 1.6 (DEI-GISHym 21340), 1.6 (DEI-GISHym 12566, DEI-GISHym 84235, GL. 3827), 1.6 – 1.7 (DEI-GISHym 84211, DEI-GISHym 12022).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF47D8B39746F917FBF9FAB3.taxon	materials_examined	Type material examined Lectotype Nematus striatus GERMANY • ♀; Berlin area; 52 ° N, 13 ° E; ZSM, GBIF-GISHym 3058. Holotype Amauronematus subnitens FINLAND – Inari Lapland • ♀; Utsjoki, Outakoski; 69.61 ° N, 25.98 ° E; 21 Jun. 1947; A. Saarinen leg.; MZH, http: // id. luomus. fi / GL. 3369. Notes Lancet most similar to E. amicula (lamnium 2 times as long as radix based on Schmidt 1997), otherwise most similar to E. striata (DEI-GISHym 84235, ZMUO. 035556). Holotype Amauronematus mimus FINLAND – Häme • ♀; Pälkäne; 61.335 ° N, 24.272 ° E; 22 May 1965; J. Kangas leg.; MZH, http: // id. luomus. fi / GL. 2513. Notes Lancet most similar to E. subfusca. Lamnium 1.7 (based on Schmidt 1997) or 1.8 – 1.9 (holotype) times as long as radix. Holotype most similar to ZMUO. 046523, ZMUO. 063032. Holotype Amauronematus subfuscus FINLAND – Central Finland • ♀; Toivakka [688: 45]; 62.098 ° N, 26.082 ° E; 6 Jun. 1973; E. Tiihonen leg.; MZH, http: // id. luomus. fi / GL. 3732. Notes Serrulae like in E. elbrus, E. septentrionalis, E. striata. Lamnium 1.7 – 1.8 times as long as radix (holotype). Most similar to ZMUO. 045409.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF47D8B39746F917FBF9FAB3.taxon	biology_ecology	Host plants Salix aurita (Schmidt 1997), S. caprea, S. myrsinifolia, S. phylicifolia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF47D8B39746F917FBF9FAB3.taxon	description	Genetics COI Based on 30 specimens, maximum within-species distance is 2.43 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura rufa, E. schlueteri, E. stordalensis, E. amicula, E. nuorbinjargi, E. tenuis, E. tota, E. betulae, E. histrio, and E. septentrionalis. Nuclear Based on 30 specimens, maximum within-species distance is 1.37 % (1.41 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0 %, is Euura tenuis. 0 % distance is based on a pair of heterozygous females ZMUO. 046518 (E. tenuis) and DEI-GISHym 31412 (E. striata) that have only NaK and POL 2 available. The heterozygous positions are not identical though. There is one fixed and several almost fixed differences between the species in the HSP 90 h 1 gene.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF47D8B39746F917FBF9FAB3.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Germany, Russia, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF79D8B0975FFA86FC10FD5F.taxon	description	Figs 248, 469	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF79D8B0975FFA86FC10FD5F.taxon	diagnosis	Diagnosis Most similar to E. striata and E. septentrionalis. Its usually dark brown or dark grey pterostigma and usually small size (5.5 – 8.0 (8.8) mm) helps to recognize the species. Euura tenuis is genetically very close to E. striata and considering the similarly weak morphological differences between them, conspecificity cannot be excluded. Lamnium 1.8 – 1.9 times as long as radix (ZMUO. 046512, holotype).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF79D8B0975FFA86FC10FD5F.taxon	materials_examined	Type material examined Holotype Amauronematus tenuis FINLAND – Inari Lapland • ♀; Kevo; 69.76 ° N, 27.01 ° E; 7 Jul. 1989; S. Schmidt leg.; MZH, http: // id. luomus. fi / GL. 3370.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF79D8B0975FFA86FC10FD5F.taxon	biology_ecology	Host plants Salix glauca, S. lapponum, and possibly S. lanata (Schmidt 1997).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF79D8B0975FFA86FC10FD5F.taxon	description	Genetics COI Based on 9 specimens, maximum within-species distance is 0.91 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura amicula, E. betulae, E. histrio, E. nuorbinjargi, E. rufa, E. septentrionalis, E. striata, and E. tota. Nuclear Based on 9 specimens, maximum within-species distance is 0.48 % (1.19 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0 %, is Euura striata (DEIGISHym 31412). See notes under Euura striata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF79D8B0975FFA86FC10FD5F.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, and Norway.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7AD8B09748FD1AFC10F816.taxon	description	Figs 245, 470	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7AD8B09748FD1AFC10F816.taxon	diagnosis	Diagnosis Mostly black body (usually?) and lancet (ventrally concave in middle part and slightly convex apically, short setae, lamnium 1.6 – 1.8 times as long as radix [http: // id. luomus. fi / GP. 110201, DEI-GISHym 84215, ZMUO. 078382]) distinguishes the species from the others in the histrio group. Both males and females can have a reddish band on the abdomen like E. histrio, but females of E. tota have black tegula and mesepisternum unlike females of E. histrio (pale tegula and usually pale mesepisternum). Males with a red band might not be distinguishable from those of E. histrio. The blunt valvula 3 in lateral view and pointed and smooth scutellum are shared with and typical for histrio (Lindqvist 1941 a: 67). There is an empty place with a label “ totus ” and no pin holes in the MZAT collection (Anssi Teräs pers. com.).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7AD8B09748FD1AFC10F816.taxon	biology_ecology	Host plants Salix lapponum.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7AD8B09748FD1AFC10F816.taxon	description	Genetics COI Based on 5 specimens, maximum within-species distance is 1.38 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura histrio, E. stenogaster, E. septentrionalis, E. amicula, E. nuorbinjargi, E. striata, and E. tenuis. Nuclear Based on 4 specimens, maximum within-species distance is 0.76 % (0.51 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.5 %, is Euura histrio.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7AD8B09748FD1AFC10F816.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7BD8B794C8FEEEFC13FD0D.taxon	description	urn: lsid: zoobank. org: act: DF 55 C 684 - 1 E 05 - 4 B 81 - 9 BBF- 4 C 9 B 3893 E 1 F 1 Figs 85, 252	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7BD8B794C8FEEEFC13FD0D.taxon	diagnosis	Diagnosis Colour pattern (head extensively pale, mesepisternum dorsally pale, abdomen ventrally and apically pale), valvula 3 (broad in dorsal view) and lancet (ventrally concave, lamnium 2.2 times as long as radix [DEI-GISHym 12305]) distinguishes the species from the others in the histrio group.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7BD8B794C8FEEEFC13FD0D.taxon	etymology	Etymology The species name, a noun in apposition, is formed from a combination of the first letters of the names of hi strio and E. striat a, related species which can be found on the same host plant (Salix caprea). The final letter ‘ o’ is chosen to provide a distinctive and euphonious name, although its correct use in Latin is normally restricted to second declension nouns in the dative.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7BD8B794C8FEEEFC13FD0D.taxon	materials_examined	Type material Holotype BULGARIA – Rila Mts • ♀; 2 km SW of Borovets; 42.257 ° N, 23.586 ° E; 1500 m a. s. l.; 15 May 2022; A. Liston and M. Prous leg.; SDEI, DEI-GISHym 12305. Paratypes BULGARIA – Rila Mts • 1 ♀; same data as for holotype; SDEI, DEI-GISHym 12309. FINLAND – Regio aboensis • 2 ♀♀; Rymättylä, Aaslaluoto; 60.3114 ° N, 21.9766 ° E; 14 Jul. 2017 [larvae]; M. Mutanen leg.; ex larvae Salix caprea; ZMUO, ZMUO. 033823, ZMUO. 033826. A female specimen from Norway (bf-sym- 00517 in BOLD) that has an identical barcode sequence might also belong to this species.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7BD8B794C8FEEEFC13FD0D.taxon	description	Description Female Body 8.1 – 9.0 mm. Colour black with extensive pale markings. Whitish are base of mandibles, labrum, clypeus, malar space, supraclypeal area, tegula and most of pronotum; labial and maxillary palps brown; apex of mandibles dark reddish; reddish brown are inner and outer orbits, temples, postocellar area, frontal area in part, dorsal half of mesepisternum, median mesoscutal lobe laterally and posteriorly, lateral mesoscutal lobes medially and posterolaterally, and most or middle part of mesoscutellum; most of metapleuron yellowish; fore- and middle femora, tibiae, and tarsi mostly yellowish or dorsally black; hind tibia and tarsus completely black or hind tibia anteriorly and posteriorly slightly yellowish; hind femur anteriorly and posteriorly yellowish; trochanters and trochantelli extensively or mostly yellowish; coxae apically extensively or slightly yellowish; pterostigma centrally pale brown; abdomen ventrally, laterally, and apically (terga 8 – 10 completely or nearly completely) yellowish; in lateral view, valvula 3 centrally slightly or extensively yellowish; cerci basally slightly yellowish; other parts black. Clypeus distinctly emarginate; frontal area between antennae flat, not distinctly angulate (“ Amauronematus - type ”); postocellar area about 1.5 – 1.8 times as broad as long; antenna about as long as costa; mesepisternum matt; claws bifid; valvula 3 in dorsal view slightly tapering, slightly longer than broad at base, without posterior invagination. Lancet with 15 – 17 serrulae; lamnium 2.2 times as long as radix; serrulae triangular with indistinct microdenticles, not strongly protruding, and without cypsella; spine-like setae about half as long as annulus length, absent on basal most and apical 3 – 4 annuli. Male Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7BD8B794C8FEEEFC13FD0D.taxon	biology_ecology	Host plants Salix caprea.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7BD8B794C8FEEEFC13FD0D.taxon	description	Genetics COI Based on 4 specimens, maximum within-species distance is 0 % and the nearest neighbours, diverging by a minimum of 0.3 %, are Euura hartigi, E. striata, E. opacipleuris, and E. variator. BOLD: AEA 4613. Nuclear Based on 3 specimens, maximum within-species distance is 0.05 % (0.11 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.59 %, is Euura amicula.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7BD8B794C8FEEEFC13FD0D.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Bulgaria and Finland.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7DD8B7971EFCAAFB54F86D.taxon	description	Figs 253, 492	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7DD8B7971EFCAAFB54F86D.taxon	diagnosis	Diagnosis Females are very similar to E. humeralis. Valvula 3 seems to be longer than in E. humeralis and the ventral margin is angled in lateral view (rounded in E. humeralis). Males are also very similar externally, but the valviceps is dorsally more or less straight in E. aceroserra and strongly convex in E. humeralis. Also, the valvispina may be more elongate in E. aceroserra and stouter in E. humeralis.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7DD8B7971EFCAAFB54F86D.taxon	materials_examined	Type material examined Holotype Amauronematus acutiserra NORWAY – Troms • ♀; Helligskogen; 69.20 ° N, 20.72 ° E; 19 Jun. 1967; O. Ranin leg.; MZH, http: // id. luomus. fi / GL. 5117.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7DD8B7971EFCAAFB54F86D.taxon	biology_ecology	Host plants Salix sp. based on ex larva reared female ZMUO. 043917.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7DD8B7971EFCAAFB54F86D.taxon	description	Genetics COI Based on 3 specimens, maximum within-species distance is 0 % and the nearest neighbours, diverging by a minimum of 0.61 %, are Euura humeralis and E. telos. Nuclear Based on 2 specimens, maximum within-species distance is 0.2 % (0.34 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.41 %, is Euura humeralis.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7DD8B7971EFCAAFB54F86D.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Norway, and Sweden. May be restricted to arctic or subarctic habitats, while the closely related E. humeralis has a more southern distribution.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7DD8B79763FD4DFBB4FCAE.taxon	description	Two species are recognized in Europe. A third species, E. telos from the East Palaearctic (see under Notes about species outside the West Palaearctic), also belongs to the group.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7ED8B49729FEEEFAC1FB7F.taxon	description	Figs 254, 493	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7ED8B49729FEEEFAC1FB7F.taxon	diagnosis	Diagnosis Very similar to E. aceroserra, see differences discussed under that species.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7ED8B49729FEEEFAC1FB7F.taxon	materials_examined	Type material examined Lectotype Nematus incanus, here designated GERMANY – Nordrhein-Westfalen • ♀; Aachen area; 50.77 ° N, 6.09 ° E; ZSM, GBIF-GISHym 3050.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7ED8B49729FEEEFAC1FB7F.taxon	biology_ecology	Host plants Salix spp. such as S. aurita (Kontuniemi 1960), S. caprea (Kangas 1985), S. cinerea (Benander 1966), S. starkeana Willd.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7ED8B49729FEEEFAC1FB7F.taxon	description	Genetics COI Based on 10 specimens, maximum within-species distance is 2.45 % and the nearest neighbours, diverging by a minimum of 0.61 %, are Euura aceroserra and E. telos. Nuclear Based on 6 specimens, maximum within-species distance is 0.54 % (0.56 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.41 %, is Euura aceroserra.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7ED8B49729FEEEFAC1FB7F.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Austria, Bulgaria, Finland, France, Germany, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7ED8B49760FAFBFC74F940.taxon	description	Although the group is not monophyletic based on nuclear genes (E. abnormis, E. longicauda, and a North American species form a separate clade from the others), it is well supported by morphology (long valvula 3 and lancet usually with papilliform serrulae, malar space about 1.5 – 2.5 times as long as diameter of front ocellus) and in most part also based on mitochondrial COI. While nearly all sampled (Palaearctic) specimens of the longiserra group form a strongly supported clade based on COI, two females from California (2300 – 2600 m a. s. l.), USA, group with Euura brunnea. Morphologically, these females from California do not seem to be distinguishable from those of E. neglecta, but the nuclear genes of one specimen group it with E. abnormis and E. longicauda. Because the current nuclear data do not strongly contradict the monophyly of the longiserra group, it seems possible that sequencing of additional genes could reveal stronger support. The ambiguous lack of support based on genetic data may be due to incomplete lineage sorting and historical introgressions.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7ED8B5973EF908FF76F818.taxon	description	Figs 255, 494	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7ED8B5973EF908FF76F818.taxon	diagnosis	Diagnosis Mostly black abdomen, black metafemur and often also black metatibia (sometimes the body is nearly completely black) distinguish the females from the others in the group. Females are sometimes shortwinged. Males are nearly completely black, apex of pseudoceps of the penis valve has a long spine or filament that is strongly curved dorsally, and a valvispina is missing. The pseudoceps of three other species of Euura has a long spine or filament-like extension. In E. longicauda the extension is also curved dorsally, but it is thinner and a valvispina is present. In E. cornuta (E. viduata group) and E. amentorum (E. amentorum group) the extension of the pseudoceps is more or less straight.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7ED8B5973EF908FF76F818.taxon	materials_examined	Type material examined Holotype Amauronematus glacialis RUSSIA • ♀; Novaja Zemlya; Grinewetski leg.; ZIN, DEI-GISHym 30222. Lectotype Amauronematus tolli RUSSIA • ♀; Siber. bor. or. [north-east Siberia: around mouth of the River Lena, and from the New Siberian Islands]; SDEI, GBIF-GISHym 4085. Holotype Amauronematus aulatus USA – Alaska • ♀; Barter Island; 70.121 ° N, 143.663 ° W; 16 Jun. 1914; D. Jenness leg.; CNC, CNC 957884.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7ED8B5973EF908FF76F818.taxon	biology_ecology	Host plants Salix herbacea, S. polaris. Oviposition is into the leaf blade, where a conspicuous procecidium develops on the upper side. The young larva at first feeds inside this, but later leaves and feeds from the leaf edge. Interestingly, sequencing of gut contents of one swept larva (DEI-GISHym 80086) suggested that it had been feeding on Bistorta sp. (presumably B. vivipara). In addition, we noticed that numerous young larvae (together with E. obscuripes) originally collected from Salix herbacea fed readily on other willows (e. g., S. phylicifolia) and even B. vivipara after the S. herbacea had been consumed. Because of the small size of the dwarf willows, the externally-feeding larvae on these plants generally need to move around to find sufficient food, and acceptance of other plant species nearby may be an adaptation that helps them to cope with this.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7ED8B5973EF908FF76F818.taxon	description	Genetics COI Based on 10 specimens, maximum within-species distance is 0.76 % and the nearest neighbour, diverging by a minimum of 0.76 %, is Euura longicauda. Nuclear Based on 8 specimens, maximum within-species distance is 0.79 % (0.71 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.89 %, is Euura neglecta.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF7ED8B5973EF908FF76F818.taxon	distribution	Distribution and material examined Holarctic. Specimens studied are from Finland, Norway, Russia, Sweden, United Kingdom, and the USA.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF70D8BA9743FEEEFC03F91F.taxon	description	Figs 260, 496	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF70D8BA9743FEEEFC03F91F.taxon	diagnosis	Diagnosis Females have more or less the same nearly completely or mostly pale orange colouration as E. longiserra and most E. neglecta, but the serrulae of E. eiteli are almost flat (distinctly more protruding in E. longiserra and somewhat more protruding in E. neglecta). Males are not known for certain: the only candidate (DEI-GISHym 84213) seems to be closest to females of E. eiteli based on some analyses of nuclear data, but the large genetic distance might also indicate the presence of additional species in the longiserra group. While penis valves of E. longiserra, E. munda, and E. neglecta are very similar to each other, DEI-GISHym 84213 does seem to be different (Fig. 496). The paravalva is basally about as broad as apically in DEI-GISHym 84213, while basally narrower than apically in E. longiserra, E. munda, and E. neglecta.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF70D8BA9743FEEEFC03F91F.taxon	materials_examined	Type material examined Holotype Amauronematus eiteli FINLAND – Central Finland • ♀; Pihtipudas; 63.36 ° N, 25.55 ° E; 7 Jun. 1945; A. Saarinen leg.; MZH, http: // id. luomus. fi / GL. 3375.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF70D8BA9743FEEEFC03F91F.taxon	biology_ecology	Host plants Salix pentandra (Zinovjev & Vikberg 1998; Nyman et al. 2006).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF70D8BA9743FEEEFC03F91F.taxon	description	Genetics COI Based on 3 specimens, maximum within-species distance is 1.98 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura longiserra, E. munda, and E. neglecta. After excluding the male specimen (DEI-GISHym 84213), which may be a different species, maximum within-species distance is 1.98 % and the nearest neighbour, diverging by a minimum of 0.15 %, is E. neglecta. Nuclear Based on 3 specimens, maximum within-species distance is 0.64 % (0.04 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.29 %, is Euura neglecta. After excluding the male specimen (DEI-GISHym 84213), which may be a different species, maximum within-species distance is 0.02 % (0.04 % based on haplotypes of individual females) and the nearest neighbour, diverging by a minimum of 0.49 %, is E. neglecta.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF70D8BA9743FEEEFC03F91F.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, and Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF70D8BB9729F95AFB8DFBA5.taxon	description	Figs 256, 495	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF70D8BB9729F95AFB8DFBA5.taxon	diagnosis	Diagnosis Females are most similar in colouration to E. munda, but with distinctly more pronounced serrulae. Serrulae are similar to E. longiserra, although apparently narrower, but E. longicauda is dorsally also darker (mostly black, E. longiserra nearly completely or mostly pale). Males possess a valvispina and a long and thin apical extension of pseudoceps, while a valvispina is missing in the other three species of Euura that have a long apical extension of pseudoceps (E. abnormi s, E. cornuta, and E. amentorum).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF70D8BB9729F95AFB8DFBA5.taxon	materials_examined	Type material examined Lectotype Nematus (Amauronematus) longicauda, here designated FINLAND – Lapin Lääni • ♀; Kilpisjärvi; 69.04 ° N, 20.81 ° E; W. Hellén leg; MZH, http: // id. luomus. fi / GL. 3377.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF70D8BB9729F95AFB8DFBA5.taxon	biology_ecology	Host plants Salix glauca, S. lanata (Zinovjev & Vikberg 1998).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF70D8BB9729F95AFB8DFBA5.taxon	description	Genetics COI Based on 7 specimens, maximum within-species distance is 1.67 % and the nearest neighbour, diverging by a minimum of 0.76 %, is Euura abnormis. Nuclear Based on 3 specimens, maximum within-species distance is 0.32 % (0.22 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.94 %, is Euura abnormis.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF70D8BB9729F95AFB8DFBA5.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Norway, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF71D8B8973FFBB5FAFEFE5E.taxon	description	Figs 257, 497	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF71D8B8973FFBB5FAFEFE5E.taxon	diagnosis	Diagnosis The usually almost completely orange body (but sometimes dorsally extensively black), and pronounced and broad papilliform serrulae distinguish the females from the others in the longiserra group. Based on penis valves, males might not be clearly distinguishable from E. munda and E. neglecta, but sternum 9 might usually (?) be black in E. longiserra (pale in E. munda and E. neglecta).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF71D8B8973FFBB5FAFEFE5E.taxon	materials_examined	Type material examined Lectotype Nematus longiserra SWEDEN – Skåne • ♀; Kungsmarken, Södra Sandby; 55.72 ° N, 13.34 ° E; MZLU, MZLU 2017292.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF71D8B8973FFBB5FAFEFE5E.taxon	biology_ecology	Host plants Salix aurita, S. caprea (Zinovjev & Vikberg 1998), S. cinerea (Roller & Macek 2017; this study), and S. starkeana.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF71D8B8973FFBB5FAFEFE5E.taxon	description	Genetics COI Based on 6 specimens, maximum within-species distance is 0.91 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura eiteli (DEI-GISHym 84213), E. munda, and E. neglecta. Nuclear Based on 6 specimens, maximum within-species distance is 0.3 % (0.39 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.47 %, is Euura neglecta.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF71D8B8973FFBB5FAFEFE5E.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Bulgaria, Finland, Germany, Sweden, and the United Kingdom.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF72D8B8975EFE1AFB8FF996.taxon	description	Figs 259, 498	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF72D8B8975EFE1AFB8FF996.taxon	diagnosis	Diagnosis Females are most similar to darker specimens of E. neglecta. Terga 1 – 8 are dorsally fully black in E. munda, while extensively pale starting at least from tergum 7 in E. neglecta. The mesepisternum is usually ventrally black in E. munda and usually completely pale in E. neglecta. Black and brown or greyish legs in males might distinguish them from males of E. neglecta which usually have extensively reddish or orange legs. Sternum 9 might usually (?) be black in E. longiserra males, but pale in E. munda.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF72D8B8975EFE1AFB8FF996.taxon	materials_examined	Type material examined Lectotype Amauronematus mundus, here designated GERMANY – Brandenburg • ♀; Finkenkrug; 52.56 ° N, 13.03 ° E; 30 m a. s. l.; SDEI, GBIF-GISHym 4096.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF72D8B8975EFE1AFB8FF996.taxon	biology_ecology	Host plants Salix repens, including S. repens rosmarinifolia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF72D8B8975EFE1AFB8FF996.taxon	description	Genetics COI Based on 13 specimens, maximum within-species distance is 2.28 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura eiteli (DEI-GISHym 84213), E. longiserra, and E. neglecta. Nuclear Based on 11 specimens, maximum within-species distance is 0.32 % (0.2 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.32 %, is Euura neglecta.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF72D8B8975EFE1AFB8FF996.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, France, and Germany.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF72D8B99720F9A2FC6BFA83.taxon	description	Figs 258, 499 – 500	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF72D8B99720F9A2FC6BFA83.taxon	diagnosis	Diagnosis Externally, females are most similar to E. longiserra and E. eiteli. Serrulae are larger and distinctly more protruding in E. longiserra, but almost flat in E. eiteli (intermediate in E. neglecta). Darker females of E. neglecta still seem to be paler (abdominal terga dorsally extensively pale starting at least from tergum 7 and mesepisternum usually completely pale) than E. munda females (terga 1 – 8 dorsally fully black, mesepisternum is usually ventrally black). Usually extensively reddish or orange legs and pale sternum 9 in males might distinguish them from E. munda and E. longiserra.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF72D8B99720F9A2FC6BFA83.taxon	materials_examined	Type material examined Holotype Amauronematus spiniserra SWEDEN – Torne Lappmark • ♀; Torneträsk; 68.22 ° N, 19.74 ° E; 400 m a. s. l.; R. Malaise leg.; NHRS, NHRS-HEVA 000003851. Lectotype Amauronematus intermedius RUSSIA – Kamchatka oblast • ♀; Nischne-Kamtchatsk, Lake Azhabachye; 56.166 ° N, 161.893 ° E; R. Malaise leg.; NHRS, NHRS-HEVA 000006362.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF72D8B99720F9A2FC6BFA83.taxon	biology_ecology	Host plants Salix phylicifolia. According to Kangas (1985) also S. aurita and S. pentandra.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF72D8B99720F9A2FC6BFA83.taxon	description	Genetics COI Based on 22 specimens, maximum within-species distance is 2.89 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura munda, E. eiteli (DEI-GISHym 84213), and E. longiserra. Nuclear Based on 21 specimens, maximum within-species distance is 0.95 % (0.46 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.29 %, is Euura eiteli (DEIGISHym 84213).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF72D8B99720F9A2FC6BFA83.taxon	distribution	Distribution and material examined Holarctic. Specimens studied are from Finland, Russia, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF73D8B99774FAD5FECDF964.taxon	description	Closely related to the histrio and variator groups. Females have a narrow or triangular and pointed valvula 3 in dorsal view, long malar space (more than 2.0 times as long as diameter of front ocellus), and the lancet tends to be smaller (1.2 – 1.6 mm), less sclerotized and with thinner setae than in the histrio group (lancet length 1.4 – 2.6 mm), but is similar to the variator group. Valvula 3 in the variator group is in dorsal view less pointed at the apex and can appear rectangular. The malar space in the histrio group is usually less than 1.6 times as long as diameter of front ocellus. The lamnium is 2.5 – 3.2 times as long as the radix in the variator group, but 2.1 – 2.5 times as long in the opacipleuris group. Penis valves are not clearly distinguishable from the histrio group, but there seem to be slight differences to the variator group. The dorsal margin of the paravalva broadens more abruptly at the base of valvispina and the pseudoceps is narrower at its apex in the variator group than in the opacipleuris group. Two species are recognised.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF73D8BE973EF8F2FB8FFB36.taxon	description	Figs 261 – 262, 472	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF73D8BE973EF8F2FB8FFB36.taxon	diagnosis	Diagnosis Closely related to E. stordalensis, but darker (nearly completely black) and valvula 3 is more triangular in dorsal view than in E. stordalensis (extensively brown around eyes, pale labrum, brownish tibia, and often extensively pale thorax). Lancets which we examined (DEI-GISHym 12561, W 17802) have clearly or somewhat longer setae (as in E. stordalensis) than the specimen mentioned by Vikberg (1970 a), but otherwise they do not seem to be distinguishable. Differences in the penis valves are not clear. Based on current sampling, nuclear genes separate the Fennoscandian stordalensis from the Alpine opacipleuris, although this may not remain the case if specimens from a wider area are sequenced.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF73D8BE973EF8F2FB8FFB36.taxon	materials_examined	Type material examined Lectotype Amauronematus opacipleuris AUSTRIA • ♂; Tirol; SDEI, GBIF-GISHym 4098.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF73D8BE973EF8F2FB8FFB36.taxon	biology_ecology	Host plants Salix reticulata L. (sequenced larva), and possibly other species of dwarf willow (Lacourt 1999).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF73D8BE973EF8F2FB8FFB36.taxon	description	Genetics COI Based on 3 specimens, maximum within-species distance is 4.1 % and the nearest neighbour, diverging by a minimum of 0 %, is Euura variator. Nuclear Based on 3 specimens, maximum within-species distance is 0.39 % (0.5 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.36 %, is Euura stordalensis.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF73D8BE973EF8F2FB8FFB36.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Austria, Italy, and Switzerland.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF74D8BF9724FB02FBE9FB2B.taxon	description	Figs 263, 473	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF74D8BF9724FB02FBE9FB2B.taxon	diagnosis	Diagnosis Closely related to E. opacipleuris, see differences mentioned under that species.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF74D8BF9724FB02FBE9FB2B.taxon	materials_examined	Type material examined Lectotype Nematus stordalensis CANADA – Ellesmere Island • ♀; Havnefjorden, Havnen; 77.9 ° N, 81.7 ° W; 18 Jun. 1900; ZMUN, NHMO: 1000200592 / PR 316 VV. Notes Length 6.7 mm. Best morphological match is N 13682 (about 6 mm and slightly darker). Holotype Nematus marginifer CANADA – Ellesmere Island • ♂; Beistadfjorden (Bunden av Kjödfjorden); 77.9 ° N, 81.7 ° W; 9 Jun. 1899; Simmons leg.; ZMUN, NHMO: 1000199953 / PR 317 VV. Notes Penis valve (Vikberg 1970 a: fig. 7) not distinguishable from European specimens (e. g., DEIGISHym 12097). Holotype Amauronematus cogitatus USA – Alaska • ♀; Demarcation Point; 69.648 ° N, 141.233 ° W; 14 May 1914; F. Johansen leg.; emerged from cocoon 23 Jun. 1914; CNC, CNC 1056982. Lectotype Amauronematus speciosus FINLAND – Kittilä Lapland • ♀; Muonio, Pallastunturi; 68.100 ° N, 23.999 ° E; 22 Jun. 1942; W. Hellén leg.; MZH, http: // id. luomus. fi / GL. 2762.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF74D8BF9724FB02FBE9FB2B.taxon	biology_ecology	Host plants Salix herbacea and possibly other dwarf willows.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF74D8BF9724FB02FBE9FB2B.taxon	description	Genetics COI Based on 9 specimens, maximum within-species distance is 1.67 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura rufa, E. schlueteri, and E. striata. Nuclear Based on 8 specimens, maximum within-species distance is 0.76 % (0.69 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.36 %, is Euura opacipleuris.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF74D8BF9724FB02FBE9FB2B.taxon	distribution	Distribution and material examined Holarctic. Specimens studied are from Canada, Finland, Norway, and the USA.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF75D8BF974CFB2EFDE4FAE5.taxon	description	The group is defined based on genetic data, according to which the species are closely related. For the adults, there are no clear morphological characters that could define the group, but the larvae are darkly coloured, which is unusual in Euura.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF75D8BC9720FA74FB8DFB4C.taxon	description	Figs 273, 501	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF75D8BC9720FA74FB8DFB4C.taxon	diagnosis	Diagnosis Its brown pterostigma, rather long and narrow valvula 3 in dorsal view and lancet distinguish the females from the others in the “ Amauronematus ” group. Lancet is most similar to E. lindqvisti (aegra group) and E. ampla (toeniata group). Euura ampla has darker pterostigma (black) and is generally darker (mostly black with whitish markings) than E. berolinensis (usually with extensive yellowish or reddish markings). Setae of the lancet in E. ampla are also shorter than in E. berolinensis. Euura lindqvisti is also usually darker than E. berolinensis, but also has a longer malar space (more than 1.4 times as long as diameter of front ocellus, less than 1.3 times in E. berolinensis). Penis valves (e. g., ventrally strongly curved valvura) can be reliably used to identify the males.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF75D8BC9720FA74FB8DFB4C.taxon	materials_examined	Type material examined Holotype Pachynematus berolinensis GERMANY – Berlin • ♂; Friedrichshagen; 52.45 ° N, 13.63 ° E; May 1964; H. Adam leg.; reared ex larva on Betula; SDEI, GBIF-GISHym 3877. Holotype Amauronematus clypeatus RUSSIA – Baikal • ♀; Tjernorud; 22 May 1967; B. N. Verzhutskij leg.; MZH, http: // id. luomus. fi / GL. 5125. Holotype Amauronematus kevoensis FINLAND – Inari Lapland • ♀; Kevo; 69.76 ° N, 27.01 ° E; 2 Jul. 1971; T. Kontuniemi leg.; emerged 10 May 1972 ex larva on Betula pubescens; MZH, PR. 552 VV.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF75D8BC9720FA74FB8DFB4C.taxon	biology_ecology	Host plants Betula pubescens and probably also at least B. pendula. One generation per year.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF75D8BC9720FA74FB8DFB4C.taxon	description	Genetics COI Based on 4 specimens, maximum within-species distance is 2.43 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura punicea and E. ranini. Nuclear Based on 5 specimens, maximum within-species distance is 1 % (0.32 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.68 %, is Euura punicea.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF75D8BC9720FA74FB8DFB4C.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Germany, and Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF76D8BD975EFB0BFB0BFB2A.taxon	description	Figs 274, 502	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF76D8BD975EFB0BFB0BFB2A.taxon	diagnosis	Diagnosis Mostly pale body (can be pink in life) and papilliform serrulae usually make identification of the females rather easy, but some specimens of E. vittata group with papilliform serrulae can be similarly pale. The darker cerci of the palest specimens of the E. vittata group (completely or nearly completely pale in E. punicea) and the longer malar space (about as long as the front ocellus in E. punicea) distinguish them. Penis valves are most similar to the closely related E. ranini, but E. punicea seems to be paler (abdomen ventrally completely pale, only subgenital plate pale in E. ranini).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF76D8BD975EFB0BFB0BFB2A.taxon	materials_examined	Type material examined Lectotype Nematus prototypus, here designated GERMANY – Nordrhein-Westfalen • ♂; Aachen area; 50.77 ° N, 6.09 ° E; ZSM, GBIF-GISHym 3055. Lectotype Amauronematus excellens, here designated FINLAND – Uusimaa • ♀; Karislojo [Karjalohja]; 60.243 ° N, 23.723 ° E; 25 – 28 Jun. 1910; R. Forsius leg.; emerged 1911 ex larvae on Salix caprea; ZSM, GBIF-GISHym 3048.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF76D8BD975EFB0BFB0BFB2A.taxon	biology_ecology	Host plants A wide spectrum of Salix spp. One generation per year.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF76D8BD975EFB0BFB0BFB2A.taxon	description	Genetics COI Based on 9 specimens, maximum within-species distance is 3.53 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura berolinensis, E. ranini. Nuclear Based on 4 specimens, maximum within-species distance is 0.1 % (0.28 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.68 %, is Euura berolinensis.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF76D8BD975EFB0BFB0BFB2A.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Bulgaria, Estonia, Finland, and Germany.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF77D8A29754FB2DFC03FD02.taxon	description	Figs 275 – 276, 503	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF77D8A29754FB2DFC03FD02.taxon	diagnosis	Diagnosis Females are most similar to E. lethe (E. tunicata group), that have a similar lancet. Mesepisternum and mesonotum may be paler (always with reddish markings?) and the basal annuli seem to be narrower than in E. lethe (mesepisternum and mesonotum always black?). Although serrulae of two Finnish specimens (including the holotype) of ranini and the sequenced specimen from the Russian Far East (DEI-GISHym 80671) are somewhat different, externally no significant differences can be observed. The penis valve drawn by Lindqvist (1971 a) matches well with the sequenced specimen from the Russian Far East and the nuclear sequences are nearly identical to a sequenced Finnish larva. The penis valves are most similar to E. punicea, but sterna 2 – 6 are (always?) black (pale in E. punicea).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF77D8A29754FB2DFC03FD02.taxon	materials_examined	Type material examined Holotype Amauronematus ranini FINLAND – Uusimaa • ♀; Helsinge [Vantaa]; 60.30 ° N, 24.90 ° E; 17 May 1959; O. Ranin leg.; MZH, http: // id. luomus. fi / GL. 2757.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF77D8A29754FB2DFC03FD02.taxon	biology_ecology	Host plants Populus tremula. One generation per year.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF77D8A29754FB2DFC03FD02.taxon	description	Genetics COI Based on 3 specimens, maximum within-species distance is 0.76 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura berolinensis and E. punicea. Nuclear Based on 3 specimens, maximum within-species distance is 0.18 % (0.04 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.72 %, is Euura punicea.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF77D8A29754FB2DFC03FD02.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, and Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF68D8A2976FFD55FE0EFBE1.taxon	description	The group is mostly defined based on genetics. Three species are recognized in the group, of which E. ampla can be identified quite reliably from the others in the group and from the other Euura. Because of black pterostigma (as in E. ampla) and other characters, E. toeniata can usually also be recognized from the other similar species, but sometimes the difference in pterostigma colouration is not clear compared to the very similar E. obscuripes (the third species in the group). Females of the E. toeniata group are similar also to E. anthracina, E. hyperborea (both with a pale pterostigma), and E. distinguenda (black pterostigma). The latter three species tend to have a shorter malar space (roughly 1.0 – 1.5 times as long as diameter of front ocellus) than the E. toeniata group (1.3 – 2.0 times as long) and narrower valvula 3 in dorsal view. In addition, females of E. obscuripes might sometimes be nearly indistinguishable from E. variator (variator group). Males can be very similar (including penis valves) to the E. variator and E. vittata groups.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF68D8A39742FB69FAD0FE50.taxon	description	Figs 272, 478	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF68D8A39742FB69FAD0FE50.taxon	diagnosis	Diagnosis Black or rarely brown pterostigma, mostly black body with varying degree of whitish markings, valvula 3 (narrow and pointed in dorsal view), lancet (ventrally concave, 22 – 25 serrulae, short setae, apical serrulae practically without microdenticles, apical annuli perpendicular to serrulae), and penis valve (e. g., slightly curved valvispina at dorsal and ventral margins), and long malar space (1.3 – 2.0 times as long as diameter of front ocellus) enable identification of the species from the other Euura.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF68D8A39742FB69FAD0FE50.taxon	materials_examined	Type material examined Lectotype Amauronematus amplus GERMANY – Brandenburg • ♀; Fürstenberg in Mecklenburg; 53.183 ° N, 13.167 ° E; May 1887; F. W. Konow leg.; SDEI, GBIF-GISHym 4089.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF68D8A39742FB69FAD0FE50.taxon	biology_ecology	Host plants Betula pendula B. pubescens (including ssp. czerepanovii.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF68D8A39742FB69FAD0FE50.taxon	description	Genetics COI Based on 11 specimens, maximum within-species distance is 1.52 % and the nearest neighbours, diverging by a minimum of 0.3 %, are Euura obscuripes and E. toeniata. Nuclear Based on 9 specimens, maximum within-species distance is 0.09 % (0.11 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.37 %, is Euura toeniata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF68D8A39742FB69FAD0FE50.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Bulgaria, Finland, Germany, Russia, Slovakia, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF69D8A19736FDE7FAD4FB70.taxon	description	Figs 268 – 270, 481 – 482	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF69D8A19736FDE7FAD4FB70.taxon	diagnosis	Diagnosis Most similar to E. toeniata, which usually has a darker (black) pterostigma. Nearly completely black specimens may not be reliably distinguishable from similarly coloured E. toeniata. Paler specimens of E. obscuripes have more brown or reddish markings rather than whitish or greyish as in E. toeniata. The species is also very similar to E. variator (variator group), but most females can usually be distinguished. Euura variator females are 5.0 – 7.5 mm (E. obscuripes 6.5 – 9.5 mm), have a nearly always ventrally completely pale abdomen (mostly black in E. obscuripes), and usually pale tegula and metafemur (tegula and metafemur black especially in smaller specimens of E. obscuripes). There are exceptions, for example the sequenced E. obscuripes specimen DEI-GISHym 84010 is small (~ 6.5 mm) and extensively pale, making it nearly indistinguishable from typical E. variator (including the lancet). Practically the only difference to pale specimens of E. variator seems to be a black supraclypeal area in DEI-GISHym 84010. The supraclypeal area seems to be always (?) pale in E. variator specimens that have some reddish colour on mesonotum and / or mesoscutellum. Males are similar to the E. variator and E. vittata groups and might not always be distinguishable. The species as delimited here is genetically and morphologically variable, but because the variability is apparently nearly continuous, there is insufficient evidence for the recognition of more than one species. The strongest indication of the existence of an additional species is a lineage based on nuclear DNA that seems to feed on Salix myrsinites. The oldest available name for this lineage might be Amauronematus humeralis var. rufomacula (preoccupied Amauronematus poppii and Euura bertilpoppii would be synonyms in this case). However, reliable morphological separation of rufomacula from obscuripes is unclear. Furthermore, additional genetic and host plant data should be obtained to check how well rufomacula really separates from obscuripes.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF69D8A19736FDE7FAD4FB70.taxon	materials_examined	Type material examined Lectotype Nematus obscuripes, here designated RUSSIA – Novaja Zemlya • ♀; Matotschkin Scharr [Matochkin Strait]; 73.3 ° N, 55.6 ° E; 1875; NHRS, NHRS-HEVA 000006456. Lectotype Amauronematus poppii, here designated RUSSIA • ♀; Kanin Peninsula; 68.0 ° N, 45.0 ° E; B. Poppius leg.; SDEI, GBIF-GISHym 4099. Lectotype Amauronematus humeralis var. rufomacula, here designated RUSSIA – Kamchatka oblast • ♀; Nischne-Kamtchatsk, Lake Azhabachye; 56.166 ° N, 161.893 ° E; R. Malaise leg.; NHRS, NHRS-HEVA 000006423. Notes 20 – 21 serrulae; lancet not distinguishable from DEI-GISHym 19923 or DEI-GISHym 84010. Malar space about 1.5 times as long as diameter of front ocellus. Lectotype Amauronematus variabilis var. sjoeblomi, here designated RUSSIA – Kamchatka oblast • ♀; Nischne-Kamtchatsk, Lake Azhabachye; 56.166 ° N, 161.893 ° E; R. Malaise leg.; NHRS, NHRS-HEVA 000006381. Notes 22 serrulae; lancet most similar to DEI-GISHym 19923; malar space (1.6) somewhat shorter from DEIGISHym 84010 (1.9 – 2.1). Holotype Amauronematus tridentatus RUSSIA – Kamchatka oblast • ♀; Klutchi [Klyuchi]; 56.32 ° N, 160.85 ° E; R. Malaise leg.; NHRS, NHRS-HEVA 000006422. Notes Morphologically similar to DEI-GISHym 84010. Holotype Amauronematus carbonarius SWEDEN – Lule Lappmark • ♀; Hildomvare; 67.28 ° N, 16.92 ° E; 900 – 1000 m a. s. l.; 9 Jul. 1944; P. Brinck and K. Wingstrand leg.; MZLU, MZLU-HYM 00031488. Notes Best morphological match: DEI-GISHym 19905 and DEI-GISHym 12101. The synonymy with groenlandicus Malaise by Benson (1962) is here not supported. Holotype Amauronematus enslini GERMANY – Bayern • ♀; Oberstdorf; 47.42 ° N, 10.30 ° E; 22 Jun. 1940; E. Enslin leg.; MZH, http: // id. luomus. fi / GL. 5119. Notes Best morphological match: DEI-GISHym 19904. Holotype Amauronematus obesus FINLAND – Uusimaa • ♀; Helsinki, Munksnäs [Munkkiniemi]; 60.22 ° N, 24.89 ° E; 9 May 1937; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 2758. Notes Malar space about 1.6 times as long as diameter of front ocellus; serrulae most similar to DEIGISHym 19904, but setae longer.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF69D8A19736FDE7FAD4FB70.taxon	biology_ecology	Host plants Salix glauca, S. lanata, S. lapponum, S. myrsinites.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF69D8A19736FDE7FAD4FB70.taxon	description	Genetics COI Based on 30 specimens, maximum within-species distance is 1.52 % and the nearest neighbour, diverging by a minimum of 0 %, is Euura toeniata. When a specimen (DEI-GISHym 31073) from California (USA) is included, maximum within-species distance is 6.23 %. Nuclear Based on 24 specimens, maximum within-species distance is 1.28 % (0.47 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.07 %, is Euura toeniata. When excluding the E. obscuripes specimen DEI-GISHym 19806 with only 1529 bp of NaK and POL 2 available, E. toeniata is a minimum of 0.15 % different. Inclusion of a specimen (DEI-GISHym 31073) from California (USA) does not change the distance values. Although DEI-GISHym 31073 is closest to E. toeniata DEI-GISHym 83784 (highly heterozygous female) based on distance calculations (0.32 %), morphologically it does not differ from E. obscuripes and also phylogenetically tends to group with E. obscuripes.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF69D8A19736FDE7FAD4FB70.taxon	distribution	Distribution and material examined Holarctic. Specimens studied are from Finland, Norway, Russia, Sweden, Switzerland, and the USA.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6BD8A69754FAF8FE67F945.taxon	description	Figs 271, 479, 480	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6BD8A69754FAF8FE67F945.taxon	diagnosis	Diagnosis Most similar to E. obscuripes, which usually has a paler pterostigma (usually black in E. toeniata). Nearly complete black specimens may not be reliably distinguishable similarly coloured E. obscuripes. Paler specimens of E. toeniata have more whitish or greyish markings rather than brown or reddish as in E. obscuripes. Euura toeniata is genetically similarly diverse as E. obscuripes but morphologically less variable (e. g., never with reddish markings on mesepisternum).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6BD8A69754FAF8FE67F945.taxon	materials_examined	Type material examined Lectotype Tenthredo humeralis, here designated SWEDEN • ♀; locality on label illegible; MZLU, MZLU 2017263. Notes Type locality in the original description: Sweden; Pello, Kengis, Janosuando, Jukkasjärvi. Paralectotype Tenthredo humeralis UNKNOW COUNTRY • ♀; MZLU, MZLU 2017262. Lectotype Amauronematus aemulus, here designated GERMANY – Bayern • ♂; Herrieden; 49.23 ° N, 10.49 ° E; 23 Apr. 1890; Schultheiss leg.; SDEI, GBIFGISHym 4101. Notes Penis valve most similar to ZMUO. 033962. Lectotype Amauronematus alpicola, here designated SWITZERLAND – Uri • ♀; Andermatt; 46.64 ° N, 8.61 ° E; SDEI, GBIF-GISHym 4087.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6BD8A69754FAF8FE67F945.taxon	biology_ecology	Host plants A wide variety of Salix spp. (Lacourt 1999; Macek et al. 2020), including S. caprea, S. myrsinifolia, S. myrtilloides L. and S. repens rosmarinifolia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6BD8A69754FAF8FE67F945.taxon	description	Genetics COI Based on 24 specimens, maximum within-species distance is 2.58 % and the nearest neighbour, diverging by a minimum of 0 %, is Euura obscuripes. When including also secondary intraindividual COI variants, maximum within-species distance is 8.21 %. Two divergent secondary variants (0.76 % different from each other but 7.45 – 7.60 % different to the primary variant) were detected in ZMUO. 064027 from Utsjoki, Finland, which are closest to E. obscuripes (DEI-GISHym 31073) from California, USA (with distance of 2.74 – 2.89 %). Nuclear Based on 19 specimens, maximum within-species distance is 0.99 % (0.68 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.07 %, is Euura obscuripes. When excluding the E. obscuripes specimen DEI-GISHym 19806 with only 1529 bp of NaK and POL 2 available, E. obscuripes is minimum of 0.15 % different.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6BD8A69754FAF8FE67F945.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Austria, Bulgaria, Estonia, Finland, Germany, Norway, Russia, Sweden, and Switzerland.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6CD8A6976FF914FEBDF81D.taxon	description	The group is defined based on nuclear DNA. The two recognized species can be reliably distinguished from each other and the other Euura, but we have not found clear morphological characters to recognise the group.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6DD8A79727FEEEFC03F994.taxon	description	Figs 277, 504	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6DD8A79727FEEEFC03F994.taxon	diagnosis	Diagnosis The females are most similar to E. ranini (E. punicea group), which have a similar lancet. Mesepisternum and mesonotum may be darker (perhaps never with reddish markings as in E. ranini) and the basal annuli of the lancet seem to be broader than in E. ranini. Lancet is very similar to E. variabilis (not known from the West Palaearctic), but malar space is distinctly or slightly shorter (1.4 – 1.6 times as long as diameter of front ocellus) than in E. variabilis (1.7 – 1.8 times). We have tentatively associated a male (DEI-GISHym 80762) from Primorsky Krai (Russia) with the Finnish females as the rather large genetic distance based on nuclear genes still falls within the variation observed in many other Euura. Male 6 mm.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6DD8A79727FEEEFC03F994.taxon	materials_examined	Type material examined Holotype Amauronematus atratus FINLAND – Ahvenanmaa • ♀; Åttböle; 60.243 ° N, 19.908 ° E; 20 May 1945; A. Nordman leg.; MZH, http: // id. luomus. fi / GL. 3411.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6DD8A79727FEEEFC03F994.taxon	biology_ecology	Host plants Salix fragilis, S. pentandra.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6DD8A79727FEEEFC03F994.taxon	description	Genetics COI Based on 5 specimens, maximum within-species distance is 2.3 % and the nearest neighbour, diverging by a minimum of 3.53 %, is Euura tillbergi. Nuclear Based on 3 specimens, maximum within-species distance is 1.05 % (0.01 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 1.19 %, is Euura tunicata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6DD8A79727FEEEFC03F994.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, and Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6DD8A4972EF9A4FC5EFB43.taxon	description	Fig. 279	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6DD8A4972EF9A4FC5EFB43.taxon	diagnosis	Diagnosis Black pterostigma, papilliform serrulae, and mostly or ventrally pale abdomen distinguish the species from the other Euura. Specimens from Iran have a completely black hind tibia: in most other specimens only the apical third is black. Male unknown. Males mentioned by Lindqvist (1961 b: figs 4 – 5) belong to Nematus umbratus (as A. tunicatus, http: // id. luomus. fi / GL. 2773) and histrio group (as A. sollemnis, http: // id. luomus. fi / GL. 2761). The penis valve of GL. 2761 is most similar to DEI-GISHym 84228 (E. striata), externally like E. rufa.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6DD8A4972EF9A4FC5EFB43.taxon	materials_examined	Type material examined Lectotype Amauronematus forsiusi, here designated FINLAND – Uusimaa • ♀; Karislojo [Karjalohja]; 60.243 ° N, 23.723 ° E; 25 – 28 Jun. 1910; R. Forsius leg.; ZSM, GBIF-GISHym 3678.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6DD8A4972EF9A4FC5EFB43.taxon	biology_ecology	Host plants Salix aurita (Forsius 1920), S. caprea, S. myrsinifolia and S. starkeana.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6DD8A4972EF9A4FC5EFB43.taxon	description	Genetics COI Based on 6 specimens, maximum within-species distance is 3.34 % and the nearest neighbour, diverging by a minimum of 4.6 %, is Euura punicea. Nuclear Based on 2 specimens, maximum within-species distance is 0.23 % (0.22 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 1.19 %, is Euura lethe.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6DD8A4972EF9A4FC5EFB43.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Iran, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6ED8A4976EFB16FEE6F995.taxon	description	Closely related to the histrio and opacipleuris groups. Females have a rectangular or square-shaped valvula 3 in dorsal view, not clearly pointed and narrowing towards the tip as in the histrio and opacipleuris groups. Valvula 3 and lancets are very similar to the toeniata group, and some specimens of the variator group (particularly of E. variator) may not be clearly distinguishable from E. obscuripes (toeniata group) if the colouration is very similar. Penis valves are slightly different from the histrio and opacipleuris groups, but not always distinguishable from the vittata and toeniata groups. Three species are recognised.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6ED8A5975BF9A4FE05FAF3.taxon	description	Figs 264, 474	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6ED8A5975BF9A4FE05FAF3.taxon	diagnosis	Diagnosis Pale pterostigma, ventrally extensively pale body, and centrally black abdominal terga with pale anterior and posterior margins usually distinguishes the females from the others in the group. Females of Euura variator can be similarly coloured, but E. variator is found in (sub) arctic habitats, unlike E. fasciata. Males of E. fasciata are also the palest in the group and because of high similarity in penis valves are most easily confused with E. vittata found in the same habitats. The males of the two species may be separated as follows, at least usually: – distance between inner margins of lateral ocelli about as long as length of postocellar area, abdominal terga laterally extensively pale, dorsally some posterior margins pale, dorsal margin of hind tibia (almost) completely black .................................................................................................. E. fasciata – distance between inner margins of lateral ocelli larger than length of postocellar area, abdominal terga completely black or slightly pale laterally, dorsal margin of hind tibia usually black only at apex ....................................................................................................................................... E. vittata	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6ED8A5975BF9A4FE05FAF3.taxon	materials_examined	Type material examined Lectotype Amauronematus fasciatus GERMANY – Mecklenburg-Vorpommern • ♀; Teschendorf in Mecklenburg; 53.45 ° N, 13.36 ° E; 6 May 1896; F. W. Konow leg.; SDEI, GBIF-GISHym 4092. Holotype Amauronematus perkinsi UNITED KINGDOM – England • ♀; Buckinghamshire, Halton, Dancer’s End; 51.770 ° N, 0.690 ° W; 29 May 1930; R. B. Benson leg.; BMNH, B. M. TYPEHYM. 1.641.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6ED8A5975BF9A4FE05FAF3.taxon	biology_ecology	Host plants Only reliably recorded from Salix caprea (e. g., Benander 1966; Vikberg & Kontuniemi 1971).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6ED8A5975BF9A4FE05FAF3.taxon	description	Genetics COI Based on 9 specimens, maximum within-species distance is 4.71 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura semilactea and E. variator. Nuclear Based on 7 specimens, maximum within-species distance is 0.85 % (0.38 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.4 %, is Euura variator.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6ED8A5975BF9A4FE05FAF3.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Bulgaria, Finland, France, Germany, Russia, Sweden, and the United Kingdom.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6FD8AA9720FA47FAC6FD06.taxon	description	Figs 265, 475	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6FD8AA9720FA47FAC6FD06.taxon	diagnosis	Diagnosis This is the only species in the group with a black pterostigma, but otherwise the colour pattern can be indistinguishable from E. variator. Males are also best distinguished from the others in the group by their black pterostigma. Penis valves are very similar to E. toeniata (toeniata group), which also have a black pterostigma, but have completely or mostly black underside of the abdomen and completely or nearly completely black metafemur (completely or nearly completely pale underside of abdomen and metafemur black only dorsally in E. semilactea).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6FD8AA9720FA47FAC6FD06.taxon	biology_ecology	Host plants Salix caprea (Vikberg & Kontuniemi 1971), but also S. aurita, S. repens, S. cinerea (Enslin 1916 b), and S. myrsinifolia (this study).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6FD8AA9720FA47FAC6FD06.taxon	description	Genetics COI Based on 3 specimens, maximum within-species distance is 4.41 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura fasciata and E. variator. Nuclear Based on 3 specimens, maximum within-species distance is 0.51 % (0.15 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.37 %, is Euura variator.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF6FD8AA9720FA47FAC6FD06.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Bulgaria, Finland, Germany, Norway, Russia, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF60D8AB9741FD51FAEEFB66.taxon	description	Figs 266 – 267, 476 – 477	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF60D8AB9741FD51FAEEFB66.taxon	diagnosis	Diagnosis Females are most similar to E. fasciata and E. obscuripes (toeniata group); see differences discussed under these species. Males might not always be distinguishable from those of the E. obscuripes (toeniata group) and vittata group specimens found in the same (sub) arctic habitats.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF60D8AB9741FD51FAEEFB66.taxon	description	Female 5.0 – 7.5 mm. Tegula pale or sometimes mostly black, metafemur usually completely or mostly pale, sometimes mostly black, abdomen ventrally extensively pale. Male 4.0 – 6.0 (6.5) mm. Tegula and metafemur black or partly pale, subgenital plate pale or sometimes black. Best matches to godmani: ZMUO. 044556 (female), ZMUO. 059873, ZMUO. 058922 (males).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF60D8AB9741FD51FAEEFB66.taxon	materials_examined	Type material examined Lectotype Nematus variator, here designated ICELAND • ♀; Staudinger leg.; ZMHB, http: // coll. mfn-berlin. de / u / dbcac 6 / GBIF-GISHym 2822. Paralectotype Nematus variator ICELAND • 1 ♀; same data as for preceding; SDEI, GBIF-GISHym 4103. Notes GBIF-GISHym 2822 is 6.5 mm long; GBIF-GISHym 4103 is 7.7 mm long. Holotype Amauronematus godmani SWITZERLAND – Valais • ♀; Ferpècle [Glacier]; 2100 – 2400 m a. s. l.; 22 Jun. 1935; J. E. and R. B. Benson leg,; BMNH, B. M. TYPEHYM. 1.688. Notes ZMUO. 044556 is nearly a perfect morphological match. Holotype Amauronematus galbiventris SWEDEN – Torne Lappmark • ♀; Abisko; 68.35 ° N, 18.83 ° E; 17 – 22 Jun. 1954; J. E. and R. B. Benson leg.; BMNH, B. M. TYPEHYM. 1.785. Notes Length 6.5 mm. Holotype Amauronematus longidens FINLAND – Inari Lapland • 1 ♀; Utsjoki; 69.91 ° N, 27.03 ° E; 16 Jun. 1960; O. Ranin leg.; MZH, http: // id. luomus. fi / GL. 3412. Notes Length 5.5 mm.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF60D8AB9741FD51FAEEFB66.taxon	biology_ecology	Host plants Salix glauca, S. helvetica Vill., S. lapponum, S. reticulata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF60D8AB9741FD51FAEEFB66.taxon	description	Genetics COI Based on 35 specimens, maximum within-species distance is 4.56 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura opacipleuris, E. fasciata, and E. semilactea. Nuclear Based on 30 specimens, maximum within-species distance is 0.98 % (0.62 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.37 %, is Euura semilactea.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF60D8AB9741FD51FAEEFB66.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Austria, Finland, Iceland, Norway, Sweden, and Switzerland.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF61D8A8979BFAF0FB98FEE3.taxon	description	Genetic data divides the group into two clades, based both on mitochondrial COI and nuclear genes. This is supported by the structure of the male penis valves. For females, no reliable characters have been found to separate the subgroups. The ventral part of the abdomen tends to be green in live E. vittata but yellowish to black in the tillbergi subgroup and brown or yellowish in E. hedstroemi (E. vittata subgroup). Colouration of the abdomen in living specimens requires confirmation for E. hulteni and E. minivittata Prous & Mutanen sp. nov. (both in the E. vittata subgroup). Euura vittata (some specimens from the Pyrenees, e. g., DEI-GISHym 11811) can also be nearly completely pale (unknown whether green or yellow in life). Because of the lancet (and usually characteristic colouration of the abdomen), E. krausi (E. tillbergi subgroup) females can be separated reliably from the other species in the vittata group. The lancet of E. krausi has flat serrulae, while all the other species in the group have (near) papilliform serrulae. The size and shape of the serrulae of the non- krausi species varies, but there does not seem to be a clear correlation with other morphological characters or genetics, which prevents the use of the serrulae structure for species identification. Unfortunately, there are no other clear morphological characters to diagnose the species other than E. krausi, but the evidence from nuclear genes suggests the presence of five or more additional species (four in the vittata subgroup, one in the tillbergi subgroup). We have recognized five species in addition to E. krausi as the other 3 – 4 apparent nuclear lineages are currently better treated as part of E. vittata (see justification under the species). The clusters suggested by nuclear genes do show tendencies in colouration and size, which seems to enable identification of most of the females. Differences between the males are less clear and currently we have not been able to separate them morphologically. Additional morphological (ideally including larvae) and genetic examination is needed to resolve species boundaries in the vittata group.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF62D8A89723FE76FC03F823.taxon	description	Figs 280, 483	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF62D8A89723FE76FC03F823.taxon	diagnosis	Diagnosis Females (4.5 – 6.0 mm) are not always distinguishable from E. tillbergi, and possibly from E. hulteni, E. vittata and E. minivittata sp. nov. Males might not be distinguishable from E. hulteni, E. vittata, and E. minivittata. Typically, the metafemur of females is more or less pale, without distinct black lines dorsally and ventrally; metatibia with a weak dark spot at about one third from base (not always recognizable); dorsal half of mesepisternum reddish; mesonotum extensively but not completely reddish; costa and pterostigma mostly yellowish or pale brown with costa usually centrally darker and pterostigma posteriorly dark-lined; abdominal terga 2 – 7 laterally (downturned parts) not completely black and usually not completely pale. Females are not green in life similar to E. tillbergi, but E. vittata (at least usually) has abdomen ventrally green in life. It is unclear whether E. hulteni and E. minivittata are green in life. Typically, E. vittata females have metafemur dorsally and ventrally black-lined and abdominal terga laterally more extensively pale than in E. hedstroemi. In addition, the mesepisternum is often completely pale in E. vittata females. Euura hulteni females usually have a dorsally and ventrally black-lined metafemur, and the mesepisternum (as well as mesonotum) is often darker than in E. hedstroemi. Euura minivittata females have a darker pterostigma (uniformly brown or centrally somewhat paler) and femora. Euura tillbergi females usually have a black mesepisternum and mesonotum, and darker abdomen (nearly completely black or apically extensively pale). Paler specimens of E. tillbergi do not have a posteriorly distinctly dark-lined pterostigma and the metatibia lacks a distinct dark spot on the basal third of tibia (as typical in E. hedstroemi), but the latter character is not always reliable.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF62D8A89723FE76FC03F823.taxon	materials_examined	Type material examined Lectotype Amauronematus variabilis var. hedstroemi, here designated RUSSIA – Kamchatka oblast • ♀; Nischne-Kamtchatsk, Lake Azhabachye; 56.166 ° N, 161.893 ° E; R. Malaise leg.; NHRS, NHRS-HEVA 000006400.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF62D8A89723FE76FC03F823.taxon	biology_ecology	Host plants Salix phylicifolia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF62D8A89723FE76FC03F823.taxon	description	Genetics COI Based on 28 specimens, maximum within-species distance is 1.67 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura vittata and E. hulteni. Specimens belong to BOLD: ABU 6129. Nuclear Based on 28 specimens, maximum within-species distance is 0.47 % (0.27 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.71 %, is Euura vittata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF62D8A89723FE76FC03F823.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, and Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF63D8AE9758FEEEFC03FD06.taxon	description	Figs 281, 484	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF63D8AE9758FEEEFC03FD06.taxon	diagnosis	Diagnosis Females (5 – 6 mm) typically have mesepisternum black to dorsally reddish; black mesepimeron; extensively black mesonotum; costa and pterostigma mostly yellowish or pale brown with costa usually centrally darker and pterostigma posteriorly dark-lined; pale abdominal sterna (but mostly black downturned parts of terga 2 – 7); and femora with black lines dorsally and ventrally. Euura hedstroemi and E. tillbergi females have nearly completely pale metafemur or metafemur is black basally in E. tillbergi (instead of dark-lined dorsally and ventrally as in E. hulteni). The abdominal terga of Euura vittata females are typically completely pale laterally (typically extensively black in E. hulteni) and are often larger (5.5 – 7.5 mm). Euura minivittata sp. nov. females have a darker pterostigma (uniformly brown or centrally somewhat paler) and are smaller (less than 5 mm). However, occasionally females of E. hulteni might not be distinguishable from the above-mentioned species. For example, some specimens (e. g., DEI-GISHym 84439) with a completely or nearly completely pale mesepisternum, at least partly pale mesepimeron, mostly pale mesonotum, completely pale femora and pterostigma can be found, making them indistinguishable from some specimens of E. vittata. Males might not be distinguishable from those of E. hedstroemi, E. vittata, and E. minivittata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF63D8AE9758FEEEFC03FD06.taxon	materials_examined	Type material examined Lectotype Amauronematus variabilis var. hulteni, here designated RUSSIA – Kamchatka oblast • ♀; Nischne-Kamtchatsk, Lake Azhabachye; 56.166 ° N, 161.893 ° E; R. Malaise leg.; NHRS, NHRS-HEVA 000006409. Notes Length 5.3 mm. Thorax and abdomen largely black, mesepisternum and abdomen ventrally slightly pale; terga 9 – 10 extensively pale; head extensively pale around eyes; malar space about 1.2 – 1.5 times as long as diameter of front ocellus; hind femora dorsally and ventrally black. Best match: ZMUO. 031351, ZMUO. 033758. Holotype Amauronematus nylundi FINLAND – Häme • ♀; Forssa; 60.82 ° N, 23.63 ° E; 31 May 1966; E. Nylund leg.; MZH, http: // id. luomus. fi / GL. 2747. Notes Best morphological match: DEI-GISHym 84197.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF63D8AE9758FEEEFC03FD06.taxon	biology_ecology	Host plants Salix aurita and S. repens. There is also one rearing batch (rearing code 43 / 2017) of a few specimens from S. purpurea (e. g., sequenced specimen ZMUO. 033807) planted in University of Oulu botanical garden, but this may require confirmation. For Amauronematus nylundi, Lindqvist (1969: 233) mentions larvae reared from S. phylicifolia (the holotype is not among them), which may refer to the very similar E. hedstroemi.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF63D8AE9758FEEEFC03FD06.taxon	description	Genetics COI Based on 14 specimens, maximum within-species distance is 1.82 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura vittata and E. hedstroemi. Specimens belong to BOLD: ABU 6129. Nuclear Based on 14 specimens, maximum within-species distance is 0.66 % (0.61 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.47 %, is Euura vittata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF63D8AE9758FEEEFC03FD06.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, and Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF64D8AE970EFD52FB6AF914.taxon	description	Figs 290, 488	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF64D8AE970EFD52FB6AF914.taxon	diagnosis	Diagnosis Flat serrulae and usually characteristic colouration of the abdomen (pale colouration dorsally distinctly expanding posteriorly) enable identification of the females from the others in the vittata group. Male penis valves are most similar to those of E. tillbergi, but externally males of E. krausi tend to be paler.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF64D8AE970EFD52FB6AF914.taxon	materials_examined	Type material examined Holotype Amauronematus krausi GERMANY – Hessen • ♀; Climbach; 50.67 ° N, 8.82 ° E; 27 May 1986; H. Weiffenbach leg.; reared ex larva on Populus tremula; SDEI, GBIF-GISHym 4094.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF64D8AE970EFD52FB6AF914.taxon	biology_ecology	Host plants Populus tremula; also P. alba L., according to Macek et al. (2020).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF64D8AE970EFD52FB6AF914.taxon	description	Genetics COI Based on 12 specimens, maximum within-species distance is 3.23 % and the nearest neighbour, diverging by a minimum of 0 %, is Euura tillbergi. Nuclear Based on 8 specimens, maximum within-species distance is 0.67 % (0.8 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.12 %, is Euura tillbergi.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF64D8AE970EFD52FB6AF914.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Bulgaria, Finland, Germany, Russia, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF64D8AC9754F924FBE8FA94.taxon	description	Figs 284 – 289, 489 – 491	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF64D8AC9754F924FBE8FA94.taxon	diagnosis	Diagnosis Females (4.5 – 6.5 mm) with mostly or completely black abdomen (and thorax) can be distinguished from the other species in the vittata group. Paler females are most similar to those of E. hulteni, E. hedstroemi, E. minivittata sp. nov., and might not always be distinguishable. Euura hulteni typically have dorsally and ventrally black-lined metafemur (similar in E. minivittata), while the metafemur is basally black in E. tillbergi. Euura minivittata has a darker pterostigma and metafemur than in pale specimens of E. tillbergi. The pterostigma of Euura hedstroemi is typically posteriorly dark-lined and the metatibia with a dark spot at basal third of tibia, but pterostigma and metatibia can be (almost) uniformly pale, making separation from paler specimens of E. tillbergi unreliable. Male penis valves are most similar to E. krausi and paler specimens might not be distinguishable from this species. In E. tillbergi valvula 3 is rarely triangular, without a posterior invagination (ZMUO. 031718). Male 4.0 – 6.0 mm.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF64D8AC9754F924FBE8FA94.taxon	materials_examined	Type material examined Lectotype Amauronematus tillbergi, here designated SWEDEN – Torne Lappmark • ♀; Torneträsk; 68.22 ° N, 19.74 ° E; 400 m a. s. l.; R. Malaise leg.; NHRS, NHRS-HEVA 000003942. Lectotype Amauronematus tillbergi var. foveifrons, here designated SWEDEN – Torne Lappmark • ♀; Torneträsk; 68.22 ° N, 19.74 ° E; 400 m a. s. l.; R. Malaise leg.; NHRS, NHRS-HEVA 000003943. Notes Best matches: DEI-GISHym 84434 (colouration), DEI-GISHym 84433 (size), DEI-GISHym 83702 (lancet). Holotype Amauronematus latisulcatus RUSSIA – Kamchatka oblast • ♀; Klutchi [Klyuchi]; 56.32 ° N, 160.85 ° E; R. Malaise leg.; NHRS, NHRS-HEVA 000006415. Lectotype Amauronematus pacificus, here designated RUSSIA – Kamchatka oblast • ♀; Petropavlovsk; 55.06 ° N, 158.65 ° E; R. Malaise leg.; NHRS, NHRS-HEVA 000006416. Holotype Amauronematus mcluckieae UNITED KINGDOM – Scotland • Cairngorm Mts, Cairngorm; 57.09 ° N, 3.69 ° W; above 910 m a. s. l.; 27 Jun. 1934; R. B. and J. E. Benson leg.; BMNH, B. M. TYPEHYM. 1.642. Holotype Amauronematus rex UNITED KINGDOM – England • ♀; Buckinghamshire, Whaddon Chase; 51.83 ° N, 0.82 ° W; Mar. 1946; R. B. Benson leg.; reared ex larva on Salix; BMNH, B. M. TYPEHYM. 1.685. Notes Best morphological match: DEI-GISHym 83872. Was previously synonymized with hedstroemi Malaise, but colour characters of the rex holotype fit better with specimens of E. tillbergi from the Russian Far East (DEI-GISHym 83872, sequenced). Mesoscutellum is not completely pale in any E. hedstroemi specimens studied. In addition, the type specimens of rex Benson were reared from Salix aurita and possibly from S. atrocinerea (mixed rearing), but E. hedstroemi seems to be restricted to S. phylicifolia. Holotype Amauronematus obscurus FINLAND – Uusimaa • ♀; Helsinge [Vantaa]; 60.30 ° N, 24.90 ° E; 25 May 1961; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 2750. Holotype Amauronematus pustulatus FINLAND – Kuusamo • ♀; Kitka; 66.24 ° N, 28.98 ° E; 5 Jul. 1958; M. Viitasaari leg.; MZH, http: // id. luomus. fi / GL. 2536.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF64D8AC9754F924FBE8FA94.taxon	biology_ecology	Host plants Salix phylicifolia, S. myrsinites, S. herbacea, and possibly S. aurita and S. atrocinerea Brot. if Amauronematus rex Benson really is a synonym of E. tillbergi.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF64D8AC9754F924FBE8FA94.taxon	description	Genetics COI Based on 35 specimens, maximum within-species distance is 3.28 % and the nearest neighbour, diverging by a minimum of 0 %, is Euura krausi. Nuclear Based on 31 specimens, maximum within-species distance is 1.7 % (1.08 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.12 %, is Euura krausi.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF64D8AC9754F924FBE8FA94.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Norway, Russia, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF66D8D39741FAA3FD67FEFD.taxon	description	Figs 282, 485 – 486	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF66D8D39741FAA3FD67FEFD.taxon	diagnosis	Diagnosis Females (5.5 – 7.5 mm) have typically pale (green in life) underside of abdomen (sterna and downturned parts of terga), mostly black to extensively pale thorax, and metafemur with black lines dorsally and ventrally. These characters should enable distinguishing E. vittata females from E. minivittata sp. nov. (smaller and downturned parts of terga extensively black) and E. tillbergi (often smaller, downturned parts of terga extensively black or abdomen nearly completely black, and metafemur black basally to completely pale). In paler specimens of E. vittata, black lines of metafemur are not visible, but completely pale mesepisternum in this case should still distinguish the females from E. tillbergi (perhaps never completely pale mesepisternum). Separation of E. vittata females fromthose of E. hulteni and E. hedstroemi may not always be possible morphologically (see notes under these species). Some specimens from the Pyrenees (e. g., DEI-GISHym 11811) are nearly completely pale (unknown if green in life), strongly resembling E. punicea, which has pale cerci and malar space about 1.0 times as long as diameter of front ocellus (cerci in E. vittata tend to be dark at least at the tip and malar space is longer). Male penis valves are somewhat different (broader paravalva which is more expanding ventroapically) from the tillbergi subgroup (E. tillbergi and E. krausi), but not clearly different from the others in the vittata subgroup or even some other “ Amauronematus ”, like E. toeniata. The paratype male of Amauronematus pseudofasciatus Lindqvist (http: // id. luomus. fi / GL. 2756) belongs to the E. histrio group. ZMUO. 058051 female (two nuclear genes almost identical to ZMUO. 033960) was not green in life (grey). Based on nuclear genes, there appear to be several lineages of E. vittata. Euura vittata females on Salix caprea (mainly?) tend to have black to half pale mesepisternum, mostly black mesonotum, and almost uniformly whitish (green in life?) pterostigma, while specimens on S. fragilis and S. pentandra (mainly?) tend to have a completely pale mesepisternum and pterostigma bicoloured (centrally paler than area around it). Both morphotypes fall genetically into at least three groups when all nuclear genes are combined. Although host is not known for most of the sequenced specimens, the specimens from S. fragilis and S. pentandra tend to form one group (not monophyletic in all analyses) while S. caprea morphotype specimens fall into two groups. One typical S. caprea specimen (although host unknown, ZMUO. 062061) is genetically practically identical to an intermediate looking specimen (pterostigma like in S. caprea type, thorax colouration more like S. fragilis type, ZMUO. 033960) and these two specimens are genetically closer to specimens that are morphologically intermediate or almost like E. hedstroemi (e. g., ZMUO. 031989, ZMUO. 034292, W 17671; although mesepisternum is almost completely pale unlike in E. hedstroemi). Interestingly, when examining individual nuclear genes and haplotypes of some of these specimens (ZMUO. 062061, ZMUO. 031989, W 17671), the same specimen can be closer to S. caprea or S. fragilis type, or even to E. hulteni. There are two other nuclear lineages represented only by males (DEI-GISHym 31870 and DEI-GISHym 31850 from the Austrian alps as one cluster, and ZMUO. 064779 from Finland as the second), but it is not clear which species they represent. Nevertheless, we treat these two lineages as E. vittata as they are not more distant from other E. vittata specimens than individual haplotypes often found within the same female specimen.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF66D8D39741FAA3FD67FEFD.taxon	materials_examined	Type material examined Lectotype Nematus melanoleucus, here designated GERMANY • ♀; northern Germany [according to Hartig 1840: 22]; NFVG, GBIF-GISHym 4685. Notes Best morphological match: DEI-GISHym 19414. Lectotype Nematus scabrivalvis, here designated SWEDEN – Skåne • ♀; Ringsjön; 55.88 ° N, 13.51 ° E; MZLU, MZLU 2017296. Lectotype Amauronematus trautmanni, here designated GERMANY – Bayern • ♀; Oberstdorf; 47.42 ° N, 10.30 ° E; 24 May 1919; E. Enslin leg.; ZSM, GBIFGISHym 3052. Notes Best morphological match: DEI-GISHym 84171. Lectotype Amauronematus variabilis var. bergmani, here designated RUSSIA – Kamchatka oblast • ♀; Nischne-Kamtchatsk, Lake Azhabachye; 56.166 ° N, 161.893 ° E; R. Malaise leg.; NHRS, NHRS-HEVA 000006408. Paralectotype Amauronematus variabilis var. bergmani RUSSIA • 1 ♀; same data as for lectotype; NHRS, NHRS-HEVA 000006407. Notes Nearly perfect morphological match: ZMUO. 031989. Holotype Amauronematus crispus UNITED KINGDOM – England • ♀; Huntingdonshire, Woodwalton Fen; 52.443 ° N, 0.191 ° W; 10 – 11 Jun. 1947; R. B. Benson leg.; BMNH, B. M. TYPEHYM. 1.687. Holotype Amauronematus pseudofasciatus FINLAND – Uusimaa • ♀; Helsinge [Vantaa]; 60.30 ° N, 24.90 ° E; 15 May 1963; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 2755. Notes Lancet most similar to DEI-GISHym 84438 (E. tillbergi). COI sequence (458 bp) of the holotype is closest to E. vittata (two fragments closest to e. g., DEI-GISHym 84428, middle fragment to e. g., ZMUO. 046537 [E. tillbergi]).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF66D8D39741FAA3FD67FEFD.taxon	biology_ecology	Host plants Numerous Salix spp. have been mentioned, but several of these records may really refer to other species in the vittata group. See also the Notes, above.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF66D8D39741FAA3FD67FEFD.taxon	description	Genetics COI Based on 45 specimens, maximum within-species distance is 5.32 % and the nearest neighbours, diverging by a minimum of 0 %, are Euura hedstroemi and E. hulteni. Nuclear Based on 39 specimens, maximum within-species distance is 1.34 % (0.91 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.47 %, is Euura hulteni.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF66D8D39741FAA3FD67FEFD.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Austria, Bulgaria, Estonia, Finland, France, Germany, Norway, Sweden, Switzerland, and the United Kingdom.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF19D8D694E6FE7CFC10FCBB.taxon	description	urn: lsid: zoobank. org: act: 3 E 5 BFFF 5 - 0 BEB- 4 DA 4 - A 032 - AB 2 E 53439 C 66 Figs 86 – 87, 283, 487	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF19D8D694E6FE7CFC10FCBB.taxon	diagnosis	Diagnosis The species is most similar to E. hulteni, E. hedstroemi, and pale specimens of E. tillbergi. The darker pterostigma (brown or dark brown) of E. minivittata sp. nov. can help to distinguish its females from these three species, but it might not always be reliable. The darker metafemur of E. minivittata should distinguish its females more reliably from E. hedstroemi and pale specimens of E. tillbergi (those having an extensively reddish thorax), which have a (nearly) completely pale metafemur. All the examined E. hulteni (at least 5 mm) and most E. hedstroemi females are larger than examined E. minivittata females (less than 5 mm). Males of E. minivittata might not be distinguishable from smaller specimens of E. hulteni, E. hedstroemi, and E. vittata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF19D8D694E6FE7CFC10FCBB.taxon	etymology	Etymology The species name, to be treated as a Latin adjective, refers to the smaller size (mini -) of the species compared to the others in the E. vittata subgroup.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF19D8D694E6FE7CFC10FCBB.taxon	materials_examined	Type material Holotype FINLAND – Inari Lapland • 1 ♀; Utsjoki, Allasuolu; 69.7679 ° N, 26.1842 ° E; 4 Jul. 2018; M. Mutanen, N. Mutanen, A. Mutanen leg.; ex larva Salix sp.; ZMUO, ZMUO. 037271. Paratypes FINLAND – Inari Lapland • 1 ♂; same data as for holotype; ZMUO, ZMUO. 038882. – Kuusamo • 1 ♀; Kuusamo; 66.2479 ° N, 29.2577 ° E; 17 Jun. 2017; M. Mutanen leg.; ZMUO, ZMUO. 031642. – Northern Ostrobothnia • 1 ♂; Oulu; 65.1008 ° N, 25.585 ° E; 10 May 2018; M. Mutanen leg.; ZMUO, ZMUO. 035848. SWEDEN – Norrbotten • 1 ♀; Pajala, Peräjävaara; 67.259 ° N, 23.003 ° E; 160 m a. s. l.; 10 Jun. 2017; E. Heibo leg.; CEH, W 17609.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF19D8D694E6FE7CFC10FCBB.taxon	description	Description Female Body 4.2 – 5.0 mm. Colour extensively pale and black. Labrum pale; labial and maxillary palps brown; mandibles reddish-brown at apex, pale at base; clypeus, supraclypeal area, frontal area above frontal pit, temples, and orbits pale; frontal pit black or pale; postocellar area extensively or slightly pale; coxae apically extensively pale; trochanters and trochantelli pale; femora and tibiae more or less pale or brown, or dorsally and ventrally extensively black; fore and middle tarsi pale basally or ventrobasally (tarsomores 1 or 1 – 2); pronotum mostly pale; tegula pale; dorsal half of mesepisternum, median mesoscutal lobe laterally and posteriorly, lateral mesoscutal lobes medially and posterolaterally pale; mesoscutellum black or slightly pale centrally; metepisternum pale; pterostigma and costa brown or dark brown, costa apically and basally somewhat paler; sterna, hypopygium, valvifer 2, and terga 9 – 10 pale; terga 6 – 8 laterally pale; valvula 3 in lateral view centrally pale; cerci mostly or basally pale. Clypeus shallowly emarginate; frontal area between antennae flat, not angulate (“ Amauronematus - type ”); postocellar area about 2.5 times as broad as long; antenna distinctly or slightly shorter than costa; mesepisternum matt; claws bifid, subapical tooth shorter than apical; valvula 3 in dorsal view about as broad as long, not tapering, with blunt tip, with slight invagination and indistinct carina posteriorly. Lancet with 18 – 19 serrulae; serrulae papilliform, except basal 1 – 2 that are flat or almost flat; serrulae with numerous microdenticles, strongly protruding, and with indistinct cypsellae; hair-like setae about half as long as annulus length, except in basalmost annulus where setae are about one fifth as long as annulus and absent on apical 2 – 3 annuli. Male Body 4.4 – 4.6 mm. Colour mostly black, darker than female. Head nearly completely black or extensively pale: labrum pale; labial and maxillary palps brown; mandibles reddish-brown at apex, pale at base; clypeus, supraclypeal area, temples, orbits ventrally, dorsally, and posteriorly pale. Legs nearly completely black or extensively pale: coxae apically extensively pale; trochanters and trochantelli pale; femora anteriorly and posteriorly pale; fore and middle tibiae mostly (except somewhat brown dorsal margin) pale; fore and middle tarsi pale basally or ventrobasally (tarsomores 1 or 1 – 2). Pronotum posteriorly extensively pale; tegula extensively pale or black; pterostigma and costa dark brown or pterostigma with paler central area; with pale spot between costa and pterostigma and costa basally somewhat paler; sternum 9 pale, other sterna pale or black. Clypeus shallowly emarginate; frontal area between antennae flat, not angulate (“ Amauronematus - type ”); postocellar area about 2.5 times as broad as long; antenna about as long as or slightly shorter than costa and pterostigma combined; mesepisternum matt; claws bifid, subapical tooth shorter than apical; projection of tergum 8 distinct, about as long as broad or slightly broader than long and with truncate apex. Penis valve 1.1 mm, more or less right-angled between dorsal margin of paravalva and valvispina, ventroapical lobe of paravalva distinctly expanded and invagination between ventroapical lobe and valvispina indistinct.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF19D8D694E6FE7CFC10FCBB.taxon	biology_ecology	Host plants Salix sp., most likely S. phylicifolia, S. hastata, or both.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF19D8D694E6FE7CFC10FCBB.taxon	description	Genetics COI Based on 5 specimens, maximum within-species distance is 1.09 % and the nearest neighbour, diverging by a minimum of 1.06 %, is Euura tillbergi. Specimens belong to BOLD: ACJ 5443. The BIN includes also E. tillbergi, E. krausi, and E. vittata in part, but all specimens of E. minivittata sp. nov. form a clade within the BIN. Nuclear Based on 5 specimens, maximum within-species distance is 0.56 % (0.24 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.77 %, is Euura hulteni.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF19D8D694E6FE7CFC10FCBB.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF1CD8D79757FC7FFBECFDCD.taxon	description	Figs 291, 505 Nematus brunneus Norton, 1864: 8. Holotype ♀ (ANSP Type no. 10323, ANSP), not examined. Type locality: USA, Colorado. Amauronematus knabi Rohwer, 1912: 244 – 245. Syntypes 2 ♀♀ (USNMENT 00779111, USNM, http: // n 2 t. net / ark: / 65665 / 3 c 1 f 0 cc 3 e- 72 e 3 - 43 af- 86 be-b 664539 d 43 ae), not examined. Type locality: Canada, Saskatchewan, Oxbow. Amauronematus helleni Lindqvist, 1941 a: 65 – 67. Syn. nov.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF1CD8D79757FC7FFBECFDCD.taxon	diagnosis	Diagnosis Females (sterna green in live European specimens) are most similar to E. tillbergi and some other members of the E. vittata group, but serrulae of the lancet are triangular rather than papilliform as in the E. vittata group. At least some (if not most, or even all) North American specimens are almost completely pale (resembling E. punicea), but one such examined specimen (4 m) from the USA has the same lancet as the European specimens and based on two nuclear genes (NaK and EF 1 a F 2) is genetically well within the variability of the European specimens (see under Genetics). Males can be separated from the “ Amauronematus ” group species based on the penis valve.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF1CD8D79757FC7FFBECFDCD.taxon	materials_examined	Type material examined Holotype Amauronematus helleni RUSSIA – Karelia • 1 ♀; Suojärvi [Suojarwi]; 62.090 ° N, 32.368 ° E; 23 May 1937; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 2528.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF1CD8D79757FC7FFBECFDCD.taxon	biology_ecology	Host plants Betula nana.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF1CD8D79757FC7FFBECFDCD.taxon	description	Genetics COI Based on 15 specimens, maximum within-species distance is 0.91 % and the nearest neighbour, diverging by a minimum of 4.21 %, is Euura longiserra group specimen DEI-GISHym 31072 from California, USA. Nuclear Based on 12 specimens, maximum within-species distance is 0.5 % (0.29 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 1.4 %, is Euura krausi. Based on 1774 bp of NaK and EF 1 a F 2 and 7 specimens (including a specimen 4 m from Massachusetts, USA), maximum within-species distance is 0.17 % (0.51 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 1.43 %, is Euura abnormis.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF1CD8D79757FC7FFBECFDCD.taxon	distribution	Distribution and material examined Holarctic. Specimens studied are from Finland, Norway, Sweden, and the USA.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF1DD8D7979BFD8BFE2BFB1C.taxon	description	Black or dark brown pterostigma, short valvula 3, and structure of lancet and penis valve enables recognition of the group among the other Euura. Of the species of Euura with a black pterostigma, only E. spiraeae has a similar type of lancet as in the E. ribesii group. In E. spiraeae, the setae of the lancet are hair-like and the basalmost annulus is narrower (compared to height) than in the E. ribesii group (setae spine-like). Only E. vastatrix, a rare species in Eastern Europe, seems to have a pale pterostigma, in which case the spine-like setae of the lancet can be used to distinguish the females from the species with a similar type of lancet (papillosa group, and E. hypoxantha and E. jugicola of the myosotidis group). Euura ribesii group females lay eggs on the undersides of leaves (Viitasaari 1980), in contrast to most other Euura that lay eggs inside the leaf or petiole tissue. This habit of egg-laying is shared with E. spiraeae (Robbins 1927; Hara et al. 2022) and the papillosa group (Urban 2001) with a similar type of lancet. Euura hypoxantha and E. jugicola (myosotidis group) also have a similar type of lancet, but egg laying habits of these species are not known. Seven species are recognized. Most common are E. ribesii and E. leucotrocha, in Central and Western Europe also E. similator. The other species are rarely encountered.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF1DD8D49706FB5BFB9AFE5D.taxon	description	Figs 214, 506	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF1DD8D49706FB5BFB9AFE5D.taxon	diagnosis	Diagnosis The mostly black head (including antenna) and thorax, yellow abdomen (except black first tergite), and small subapical tooth (can be almost absent in male) should usually enable identification of the species. May be a specialist on Ribes alpinum L.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF1DD8D49706FB5BFB9AFE5D.taxon	materials_examined	Type material examined Holotype Pteronidea gracilidentata FINLAND – Uusimaa • ♀; Helsinge [Vantaa]; 60.30 ° N, 24.90 ° E; 1 Jun. 1964; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 2454.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF1DD8D49706FB5BFB9AFE5D.taxon	biology_ecology	Host plants Ribes alpinum.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF1DD8D49706FB5BFB9AFE5D.taxon	description	Genetics COI Based on 2 specimens, maximum within-species distance is 0.3 % and the nearest neighbour, diverging by a minimum of 0.46 %, is Euura leucotrocha. Nuclear Based on 2 specimens, maximum within-species distance is 0.03 % (0.62 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.5 %, is Euura leucotrocha.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF1DD8D49706FB5BFB9AFE5D.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Germany, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF1ED8D59727FE1CFAF9F9B0.taxon	description	Figs 215, 507	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF1ED8D59727FE1CFAF9F9B0.taxon	diagnosis	Diagnosis Typically, the extensively pale head (including antenna), thorax, abdomen, and costa generally paler than pterostigma distinguish males and females from the others in the group. Smaller subapical tooth of claws compared to E. ribesii (subapical tooth broad and as long as apical tooth) and larger compared to E. gracilidentata additionally distinguishes E. leucotrocha females from these two species. Males of E. gracilidentata also tend to have a smaller subapical tooth (can be almost absent) than in E. leucotrocha, but also have a different colour pattern, with the black head and thorax contrasting with the yellow abdomen (in E. leucotrocha the colouration of head and thorax varies together with the abdomen, in a similar way, from mostly black to extensively pale). Males of most other species can be distinguished from E. leucotrocha by the shape of the projection of tergite 8 (see under E. ribesii) and penis valves (see under E. ribesicola, E. similator, and E. vastatrix). Darker specimens of E. leucotrocha might not be clearly distinguishable from E. quieta, but usually the clypeus seems to be more deeply excised in E. quieta than in E. leucotrocha. The male type specimen of caudalis seems to fit better with leucotrocha (projection of tergite 8 broader, less emarginate clypeus) than ZMUO. 029729 (quieta). Males can also be rather dark (ZMUO. 036046): antenna black, head slightly pale around eyes (clypeus, labrum, lower orbits and slightly supraclypeal area pale), mesepisternum black, abdomen dorsally mostly black.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF1ED8D59727FE1CFAF9F9B0.taxon	materials_examined	Type material examined Lectotype Nematus leucotrochus, here designated GERMANY – Niedersachsen • ♀; Harz; 51.8 ° N, 10.3 ° E; W. Saxesen leg.; ZSM, GBIF-GISHym 3338. Paralectotype Nematus leucotrochus GERMANY • 1 ♀; same data as for lectotype; NFVG, GBIF-GISHym 4684. Lectotype Nematus haemorrhoidalis GERMANY • ♂; northern Germany [according to Hartig 1840: 22]; ZSM, DEI-GISHym 12490. Lectotype Nematus caudalis, here designated RUSSIA – Tatarstan • ♂; Kasan Province; 55.8 ° N, 49.1 ° E; E. Eversmann leg.; ZIN, DEI-GISHym 30028. Lectotype Nematus approximatus GERMANY – Nordrhein-Westfalen • ♀; Aachen area; 50.77 ° N, 6.09 ° E; ZSM, GBIF-GISHym 3203. Holotype Pteronidea cognata FINLAND – Uusimaa • ♀; Helsinki, Munksnäs [Munkkiniemi]; 60.22 ° N, 24.89 ° E; 2 Apr. 1955; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 2455.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF1ED8D59727FE1CFAF9F9B0.taxon	biology_ecology	Host plants Ribes spp. Possibly there are regional differences in preferences for host species: in Finland R. rubrum L. is preferred, whereas in Germany and the British Isles R. uva-crispa L. is the usual host (Benson 1958 a; Pschorn-Walcher & Altenhofer 2000). According to Viitasaari (1980) frequently also R. nigrum L., although this could refer to E. quieta even though Viitasaari (1980) separated this species from E. leucotrocha.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF1ED8D59727FE1CFAF9F9B0.taxon	description	Genetics COI Based on 9 specimens, maximum within-species distance is 5.17 % and the nearest neighbours, diverging by a minimum of 0.46 %, are Euura quieta and E. gracilidentata. Nuclear Based on 10 specimens, maximum within-species distance is 0.86 % (0.64 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.5 %, is Euura gracilidentata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF1ED8D59727FE1CFAF9F9B0.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Germany, Russia, Sweden, and the United Kingdom.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF1FD8DB972DF986FA89FED8.taxon	description	Figs 216, 508	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF1FD8DB972DF986FA89FED8.taxon	diagnosis	Diagnosis Most similar to E. gracilidentata, E. leucotrocha, and E. similator. Generally, head and thorax are darker (usually mostly black) than in E. leucotrocha. In the palest females, mainly black are mesoscutum dorsally and mesepisternum ventrally, while antenna (black or slightly pale ventrally) and head (usually only somewhat brown around the eyes) are still darker than in similarly pale E. leucotrocha. Typically, head, antenna, and mesoscutum are extensively pale in E. leucotrocha, but occasionally the species can be even darker than E. quieta with mostly black abdomen (at least ventrally extensively pale in E. quieta). There might be a tendency of E. quieta to have a somewhat more deeply excised clypeus than in E. leucotrocha. Differences between females of E. similator and E. quieta might be even less clear. Euura similator females might usually have antennae as long as costa and pterostigma, while in E. quieta the antenna seems to usually reach middle of pterostigma. Euura similator might usually also have a less deeply emarginate clypeus and the abdomen is typically completely pale or the black area on tergites tends to be narrow, while in E. quieta the first tergite is perhaps always black (completely or mostly) and the other tergites are completely yellow or the black area on tergites is broad. Males of E. similator have a typically (nearly) completely yellow abdomen and the valvispina is more strongly bent than in E. quieta (abdomen dorsally mostly black). Males of E. leucotrocha are typically about as pale as females, but darker specimens (mostly black head, thorax, and abdomen dorsally) might not be distinguishable from E. quieta. Euura gracilidentata males and females can usually be distinguished from E. quieta by having smaller subapical tooth, although there might be overlap. Viitasaari (1980) did not study Eversmann’s type specimens of Nematus quietus (DEI-GISHym 30033, DEI-GISHym 30034), which have black antennae (not ventrally pale). A sequenced specimen from Slovakia (DEI-GISHym 17629) is clearly different based on COI and nuclear genes (1529 bp of NaK and POL 2) from the Finnish specimens (and from the other sequenced ribesii group specimens). Morphologically, the specimen DEI-GISHym 17629 (and DEI-GISHym 19035 also from Slovakia) fits better with quieta than the other species.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF1FD8DB972DF986FA89FED8.taxon	materials_examined	Type material examined Lectotype Nematus quietus, here designated RUSSIA – Tatarstan • ♀; Kasan Province; 55.8 ° N, 49.1 ° E; E. Eversmann leg.; ZIN, DEI-GISHym 30034. Notes 207 bp of COI of the lectotype is identical to specimens from Finland (e. g., ZMUO. 030861) and with at least one nucleotide difference (E. leucotrocha DEI-GISHym 21329) to the other specimens of ribesii group. Holotype Nematus olfaciens UNITED KINGDOM – Scotland • ♀; Dundee; 56.48 ° N, 2.96 ° E; Aug. 1952; A. Sanderson leg.; reared ex larvae Ribes nigrum; BMNH, B. M. TYPEHYM. 1.696. Notes Best morphological match: ZMUO. 029695 and ZMUO. 029449.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF1FD8DB972DF986FA89FED8.taxon	biology_ecology	Host plants According to Benson (1953) preferably Ribes nigrum, but also R. rubrum and R. uva-crispa.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF1FD8DB972DF986FA89FED8.taxon	description	Genetics COI Based on 7 specimens, maximum within-species distance is 5.62 % and the nearest neighbour, diverging by a minimum of 0.46 %, is Euura leucotrocha. The Finnish specimens (6) are identical. Nuclear Based on 7 specimens, maximum within-species distance is 1.28 % (0.07 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.5 %, is Euura leucotrocha. The Finnish specimens (6) are nearly identical.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF1FD8DB972DF986FA89FED8.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Russia, Slovakia, and the United Kingdom.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF11D8D89721FE9FFC03FCE0.taxon	description	Figs 219, 511	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF11D8D89721FE9FFC03FCE0.taxon	diagnosis	Diagnosis The black head and thorax, at least dorsally black abdomen, and extensively black metafemur (at least a quarter) and tibia (at least a third) distinguish the species from the others in the group. The darkest specimens of the other species (E. leucotrocha) still have a completely or nearly completely pale metafemur (rarely slightly black at apex), paler metatibia and ventrally at least slightly pale abdomen. Recently, Hara & Iwasaki (2021) described E. suguri from Japan. When comparing suguri with ribesicola, Hara & Iwasaki (2021) were misled by photos of a specimen of Nematus lonicerae misidentified as E. ribesicola in ECatSym (Taeger et al. 2018). The lectotype of ribesicola fits well with suguri. Main differences are that the mesoscutellar appendage of the lectotype of ribesicola is about as long as the minor axis of cenchrus (distinctly shorter in suguri) and that the head is moderately projecting posterodorsally in lateral view (head markedly projecting posterodorsally in suguri). We do not consider these differences significant, as these characters vary not only within the ribesii group, but also in other Euura. The mesoscutellar appendage in the ribesii group is in most cases about as long as the minor axis of a cenchrus, but can be shorter or longer. The head is markedly projecting posterodorsally in perhaps about 10 % of the specimens. The difference in dark markings on the head mentioned for the larvae by Hara & Iwasaki (2021) might not be reliable either, as this can vary within species as well as between the larval instars (the photos in Hara & Iwasaki 2021 do not seem to be of last instar larvae). The head of the larva of E. ribesicola is the palest in the group: uniformly greenish or yellowish without numerous dark specks (Viitasaari 1980; this study), only with a dark line (Hara & Iwasaki 2021), or dark specks (Hellqvist & Svensson 1991) above the eye, while the head is black (E. ribesii and E. vastatrix) or its whole upper part is covered with numerous dark specks (E. gracilidentata, E. leucotrocha, E. quieta, E. similator) in the other species. Males are not known for certain, but the colouration of DEI-GISHym 86112 fits with E. ribesicola (black pterostigma, thorax and abdomen, extensively black metafemur and metatibia apically) and not the other species treated here. Bogacheva (1994) mentions several males of E. ribesicola, but no morphological characterisation was given.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF11D8D89721FE9FFC03FCE0.taxon	materials_examined	Type material examined Lectotype Pteronidea ribesicola FINLAND – Regio aboensis • ♀; Turku; 60.46 ° N, 22.28 ° E; 8 Jun. 1933; A. K. Merisuo leg.; reared ex larvae Ribes uva-crispa; MZH, http: // id. luomus. fi / GL. 2460. Holotype Nematus bey-bienkoi RUSSIA – Perm oblast • ♀; Molotov [Perm]; 57.996 ° N, 65.312 ° E; 20 May 1943; G. Bey-Bienko leg.; ZIN, DEI-GISHym 30236.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF11D8D89721FE9FFC03FCE0.taxon	biology_ecology	Host plants Preferably Ribes nigrum (Viitasaari 1980), but also R. uva-crispa and R. rubrum (Viitasaari 1980; Hara & Iwasaki 2021).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF11D8D89721FE9FFC03FCE0.taxon	description	Genetics COI Based on 2 specimens (a female from Finland and a putative male from Primorsky Krai, Russia), maximum within-species distance is 5.32 % and the nearest neighbour, diverging by a minimum of 1.22 %, is Euura leucotrocha. Three additional secondary variants were detected in the Finnish specimen (ZMUO. 037213) with the maximum distance of 1.06 % to the primary variant. Nuclear Based on 2 specimens, maximum within-species distance is 1.02 % (0.06 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.72 %, is Euura quieta.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF11D8D89721FE9FFC03FCE0.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, and Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF12D8DE9740FC77FE3FFE75.taxon	description	Figs 217, 509	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF12D8DE9740FC77FE3FFE75.taxon	diagnosis	Diagnosis Large subapical tooth (broad and as long as apical tooth), costa as black as pterostigma along most of its length (only approximately basal quarter paler), typically mostly pale flagellum, and typically completely pale abdomen distinguish the females from the others in the group. Subapical tooth is somewhat or distinctly smaller and costa is in most cases paler in the other species of the group. Viitasaari (1980) suggested that the tip of valvula 3 in lateral view is blunt in E. ribesii compared to other species, but we did not observe any consistent differences between the species. Males are best recognised by the prominent and broad projection of tergite 8 that is slightly constricted at its base, dorsally mostly black abdomen and, as in females, the mostly black costa.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF12D8DE9740FC77FE3FFE75.taxon	materials_examined	Type material examined Lectotype Nematus flavipes, here designated GERMANY • ♂; northern Germany [according to Hartig 1840: 22]; ZSM, GBIF-GISHym 3686. Syntype Pteronus longicornis USA – Michigan • ♂; Ingham, Agricultural College; 42.746 ° N, 84.483 ° W; USNM, USNMENT 00778536, http: // n 2 t. net / ark: / 65665 / 320572933 - 77 a 7 - 4 e 85 - bbc 7 - 8 e 6 e 65 c 4 e 5 e 0. Lectotype Pteronidea ribesii var. konowi, here designated GERMANY – Bayern • ♀; Fränkischer Jura; E. Enslin leg.; ZSM, GBIF-GISHym 3322. Lectotype Pteronidea ribesii var. feminina, here designated COUNTRY UNKNOWN • ♂; [label illegible]; ZSM, GBIF-GISHym 3274.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF12D8DE9740FC77FE3FFE75.taxon	biology_ecology	Host plants Ribes spp.: most frequently R. rubrum and R. uva-crispa, only rarely on R. nigrum (Viitasaari 1980). Larvae gregarious.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF12D8DE9740FC77FE3FFE75.taxon	description	Genetics COI Based on 8 specimens, maximum within-species distance is 0.46 % and the nearest neighbour, diverging by a minimum of 3.8 %, is Euura leucotrocha. Nuclear Based on 4 specimens, maximum within-species distance is 0 % (0.12 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.53 %, is Euura leucotrocha.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF12D8DE9740FC77FE3FFE75.taxon	distribution	Distribution and material examined Holarctic. Specimens studied are from Austria, Canada (only genetics), Finland, Germany, Norway, and the United Kingdom.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF14D8DE9755FDC4FB8AF843.taxon	description	Figs 218, 510	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF14D8DE9755FDC4FB8AF843.taxon	diagnosis	Diagnosis Most similar to E. quieta, see differences discussed under that species.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF14D8DE9755FDC4FB8AF843.taxon	materials_examined	Type material examined Lectotype Nematus similator GERMANY – Nordrhein-Westfalen • ♀; Aachen area; 50.77 ° N, 6.09 ° E; ZSM, GBIF-GISHym 3425. Lectotype Pteronidea leucotrocha var. loisellei, here designated FRANCE – Basse-Normandie • ♀; Lisieux; 3 Aug. 1909; A. Loiselle leg.; ZSM, GBIF-GISHym 3337. Lectotype Pteronidea eurysterna var. lutescens, here designated CROATIA • ♂; Krapina; 46.161 ° N, 15.871 ° E; Hensch leg.; ZSM, GBIF-GISHym 3342.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF14D8DE9755FDC4FB8AF843.taxon	biology_ecology	Host plants Only Ribes uva-crispa has been unequivocally recorded (Taeger et al. 1998).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF14D8DE9755FDC4FB8AF843.taxon	description	Genetics COI Based on 4 specimens, maximum within-species distance is 0.76 % and the nearest neighbour, diverging by a minimum of 3.5 %, is Euura leucotrocha. Nuclear Based on 3 specimens, maximum within-species distance is 0 % (0 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.67 %, is Euura ribesii.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF14D8DE9755FDC4FB8AF843.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Croatia, France, and Germany.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF15D8DF9764FB55FB6FFAE7.taxon	description	Large size, small subapical tooth of claw, in dorsal view long and narrow valvula 3, and broad lamnium (lamnium 2.3 – 3.0 times as long as height of basalmost annulus) separates the females from the other Euura. Males are also large and have a small subapical tooth, and in combination with colouration can be distinguished from each other and the other Euura. Two species in the West Palaearctic.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF15D8DF970BFEEFFD79FB04.taxon	diagnosis	Diagnosis The only species in the group that has a pale pterostigma instead of black or dark brown. In addition, males and females have an entirely black thorax (except tegula and pronotum) and abdomen dorsally black, head somewhat or extensively pale around eyes, and metafemur completely pale.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF15D8DF970BFEEFFD79FB04.taxon	materials_examined	Type material examined Syntype Pteronidea vastatrix RUSSIA – Amur oblast • ♀; Blagoveshchensk; 50.281 ° N, 127.523 ° E; 29 Jul. – 1 Aug. 1930; W. Wereschtschagin leg.; NHRS, NHRS-HEVA 000006437.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF15D8DF970BFEEFFD79FB04.taxon	biology_ecology	Host plants Ribes nigrum (Viitasaari 1980).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF15D8DF970BFEEFFD79FB04.taxon	description	Genetics COI No data. Nuclear No data.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF15D8DF970BFEEFFD79FB04.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF15D8DC975FFA73FB8DFD66.taxon	description	Figs 292, 512	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF15D8DC975FFA73FB8DFD66.taxon	diagnosis	Diagnosis Its large size and colouration distinguishes the species from the other Euura. In females, the antennae are pale in the middle and the middle abdominal terga are usually reddish. In males, flagellomeres 2 (3) – 7 are pale and the middle or most terga (except first tergum) are usually reddish. Both males and females have a black pterostigma and pale costa.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF15D8DC975FFA73FB8DFD66.taxon	materials_examined	Type material examined Lectotype Nematus insignis, here designated GERMANY – Niedersachsen • ♀; Klausthal [Clausthal-Zellerfeld]; 51.80 ° N, 10.34 ° E; W. Saxesen leg.; NFVG, GBIF-GISHym 4690.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF15D8DC975FFA73FB8DFD66.taxon	biology_ecology	Host plants Picea abies is the main host in Europe, but P. pungens Engelm. is also used (Kula et al. 2016).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF15D8DC975FFA73FB8DFD66.taxon	description	Genetics COI Based on 3 specimens, maximum within-species distance is 0.15 % and the nearest neighbour, diverging by a minimum of 6.23 %, is Euura scutellata. Nuclear Based on 2 specimens, maximum within-species distance is 0.02 % (0.2 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 1.26 %, is Euura scutellata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF15D8DC975FFA73FB8DFD66.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Germany, and Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF16D8DC9755FCF2FE0AF804.taxon	description	Figs 293, 513	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF16D8DC9755FCF2FE0AF804.taxon	diagnosis	Diagnosis Its large size, extensively pale body (females can be almost completely pale, and while alive tend to be green), small subapical tooth, in dorsal view long and narrow valvula 3, and penis valve distinguish the species from the other Euura. Female (6.0) 7.0 – 8.5 mm. Male 5.5 – 7.0 (7.5) mm.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF16D8DC9755FCF2FE0AF804.taxon	materials_examined	Type material examined Lectotype Nematus scutellatus, here designated GERMANY – Niedersachsen • ♀; Harz; 51.8 ° N, 10.3 ° E; W. Saxesen leg.; ZSM, GBIF-GISHym 3412. Lectotype Nematus immundus, here designated SWEDEN • ♀; Västergötland; MZLU, MZLU 2017306.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF16D8DC9755FCF2FE0AF804.taxon	biology_ecology	Host plants The usual host is Picea abies, but P. pungens is also accepted (Kula et al. 2016).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF16D8DC9755FCF2FE0AF804.taxon	description	Genetics COI Based on 14 specimens, maximum within-species distance is 3.19 % and the nearest neighbour, diverging by a minimum of 6.23 %, is Euura insignis. Nuclear Based on 2 specimens, maximum within-species distance is 0.69 %. The nearest neighbour, diverging by a minimum of 1.26 %, is Euura insignis.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF16D8DC9755FCF2FE0AF804.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Austria, Finland, France, Germany, Russia, Slovakia, Sweden, and Switzerland.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF17D8DD979AFEEEFB39FDDB.taxon	description	Mostly defined based on genetic data. The species are also morphologically similar, but we have not found consistent morphological characters that define the group to the exclusion of other Euura. Host plants are known for E. vicina (Rumex) and E. notabilis (Bistorta, this study). In addition, based on the sequencing of larval gut contents, a specimen (DEI-GISHym 80076) from Primorsky Krai (Russia) had apparently fed on Bistorta sp. At this point it is not possible to say which species DEI-GISHym 80076 could be, genetically it is closest to E. putoni and E. notabilis, but currently there is no genetic data for E. nigerrima. Based on these host plant observations and the habitats where other species have been collected, it can be suggested that all species of the vicina group are on Polygonaceae.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF17D8C2972CFD9EFC09FD3F.taxon	description	Figs 294, 514 – 515	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF17D8C2972CFD9EFC09FD3F.taxon	diagnosis	Diagnosis Its mostly or nearly completely black body, dark brown or black pterostigma and costa, size (female 7 – 8 mm, male 6 – 7 mm), small or large subapical tooth (not clearly bifid), head not of “ Amauronematus - type ”, more or less triangular valvula 3 in dorsal view, lancet, and penis valve should enable identification of the species. Species with similar lancet (16 – 18 serrulae, apical ones hook-shaped) are distinctly paler (at least legs; E. declinata, E. scotonota, and the other species of the group), smaller (less than 6 mm, e. g., E. uda, E. excisa), or have a distinctly matt mesepisternum (E. excisa). Species with similar penis valves (1.6 mm, elongate, paravalva without distinct spines and ventroapically not distinctly protruding, valvispina long, straight and not distinctly expanded at base, ventroapical margin of paravalva narrow and more or less perpendicular to valvispina, invagination between valvispina and ventroapical margin of paravalva small or absent, connection between dorsal margins of valvura and valviceps without distinct bend) are distinctly paler (e. g., E. notabilis and E. putoni), smaller (less than 5.5 mm, e. g., E. uda), or have an “ Amauronematus - type ” head (e. g., some specimens in E. vittata group). Also, external morphology and penis valves of E. hyperborea are similar, but this species is found in (sub) arctic habitats unlike E. nigerrima. Pronotum black or posterior margin slightly pale. Costa and pterostigma black or dark brown. Metafemur apically (up to half) pale. No genetic data available, but based on morphology probably closely related to paler E. notabilis and E. putoni (lancet and penis valve are not distinguishable from these species).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF17D8C2972CFD9EFC09FD3F.taxon	materials_examined	Type material examined Lectotype Pachynematus nigerrimus AUSTRIA – Tirol • ♂; Innsbruck; 47.277 ° N, 11.378 ° E; 10 May 1896; Friese leg.; SDEI, GBIFGISHym 3883. Notes Length 6.3 mm. Holotype Nematus fumosus FRANCE – Provence-Alpes-Cote-d’Azur • ♂; Ailefroide; 44.89 ° N, 6.45 ° E; 1500 m a. s. l.; 30 May 1982; V. Lacourt leg.; CTN, DEI-GISHym 12672.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF17D8C2972CFD9EFC09FD3F.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF17D8C2972CFD9EFC09FD3F.taxon	description	Genetics COI No data. Nuclear No data.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF17D8C2972CFD9EFC09FD3F.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Austria and France.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF08D8C39754FD3BFB5FFD7D.taxon	description	Figs 295, 516 – 517	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF08D8C39754FD3BFB5FFD7D.taxon	diagnosis	Diagnosis Colouration (extensively yellow abdomen, brown pterostigma, black head and thorax), more or less triangular valvula 3 in dorsal view, lancet, and penis valve distinguishes the species from the other Euura. Species with a similar lancet (16 – 18 serrulae, apical ones hook-shaped) are darker (e. g., E. declinata and the other species of the group). Euura scotonota has a somewhat similar lancet and pale underside of abdomen, but serrulae are less protruding, setae of the lancet are perhaps longer, and the pale colour is more whitish than yellowish compared to E. notabilis. Species with similar penis valve (1.5 mm, elongate, paravalva without distinct spines and ventroapically not distinctly protruding, valvispina long, straight and not distinctly expanded at base, ventroapical margin of paravalva narrow and more or less perpendicular to valvispina, invagination between valvispina and ventroapical margin of paravalva small or absent, connection between dorsal margins of valvura and valviceps without distinct bend) are distinctly darker (e. g., E. nigerrima, E. hyperborea, E. uda) or have an “ Amauronematus - type ” head. Euura putoni males seem to have a darker abdomen (dorsally nearly completely black), but otherwise might not be distinguishable from the males of E. notabilis (abdomen dorsally partly pale). Female Head black; labrum pale; clypeus black to partly pale; supraclypeal area black; thorax black; pronotum and tegula pale; pterostigma pale (yellow or brown); metafemur pale; metatibia pale with black apex; hind tarsus black; abdomen dorsally nearly completely pale to (completely?) black, ventrally pale; valvula 3 mostly black or basally extensively pale; mesepisternum smooth or slightly matt; valvula 3 in dorsal view gradually narrowing to an acute or slightly blunt tip.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF08D8C39754FD3BFB5FFD7D.taxon	materials_examined	Type material examined Lectotype Pteronus notabilis, here designated POLAND • ♂; Breslau [Wroclaw]; 51.11 ° N, 17.03 ° E; SDEI, GBIF-GISHym 3862.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF08D8C39754FD3BFB5FFD7D.taxon	biology_ecology	Host plants Bistorta officinalis.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF08D8C39754FD3BFB5FFD7D.taxon	description	Genetics COI Based on 2 specimens, maximum within-species distance is 1.37 % and the nearest neighbour, diverging by a minimum of 2.58 %, is Euura putoni. When including also secondary intraindividual COI variants, maximum within-species distance is 4.86 % and the nearest neighbour, diverging by a minimum of 1.83 %, is an unidentified Euura vicina group larva (DEI-GISHym 80076) from Primorsky Krai, Russia. Nuclear Based on 2 specimens, maximum within-species distance is 0.17 % (0.1 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.4 %, is Euura vicina group larva (DEI-GISHym 80076) from Primorsky Krai, Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF08D8C39754FD3BFB5FFD7D.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Bulgaria, Estonia, Germany, Poland, and Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF09D8C09743FCFCFC17FED8.taxon	description	Figs 296, 518	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF09D8C09743FCFCFC17FED8.taxon	diagnosis	Diagnosis Females are most similar to those of E. declinata, which has costa mostly black or dark brown with pale apical and basal edge (uniformly pale in E. putoni). Euura putoni usually has a pale pterostigma, but sometimes it is almost as black as in E. vicina, which has a completely or nearly completely black pronotum and tegula (pale in E. putoni). Colouration (black thorax, except for pale tegula and pronotum, pale pterostigma and costa, pale legs, abdomen mostly or dorsally black) and penis valve usually distinguishes the species from the others. See under E. nigerrima and E. notabilis for additional details. Female 7.5 – 8.5 mm.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF09D8C09743FCFCFC17FED8.taxon	materials_examined	Type material examined Lectotype Pteronus putoni FRANCE • ♀; France; SDEI, GBIF-GISHym 3868. Holotype Amauronematus erythropus RUSSIA – Irkutskaya oblast • ♀; Irkutsk, Uladovo; 1966; MZH, http: // id. luomus. fi / GL. 5126.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF09D8C09743FCFCFC17FED8.taxon	biology_ecology	Host plants Adults have been found on and near Bistorta officinalis, which may be the larval host plant.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF09D8C09743FCFCFC17FED8.taxon	description	Genetics COI Based on 4 specimens, maximum within-species distance is 0.3 % and the nearest neighbour, diverging by a minimum of 2.58 %, is Euura notabilis. Nuclear Only one sequence available. The nearest neighbours, diverging by a minimum of 0.8 %, are Euura notabilis and E. vicina group larva DEI-GISHym 80076.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF09D8C09743FCFCFC17FED8.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from France, and Germany.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0AD8C09740FE9FFD0BFA6C.taxon	description	Figs 297, 519	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0AD8C09740FE9FFD0BFA6C.taxon	diagnosis	Diagnosis Its large size (female typically 8 – 9 mm, male 7 – 8 mm), colouration (black pterostigma, pale costa, nearly completely black body, including pronotum and tegula, extensively yellow or orange legs), and long inner hind tibial spur (longer than apical breadth of hind tibia) distinguishes this species from the other Euura.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0AD8C09740FE9FFD0BFA6C.taxon	biology_ecology	Host plants Rumex spp. (Miles 1936; Kangas 1985). Reports from Betula and Salix (see, e. g., Miles 1936) require confirmation.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0AD8C09740FE9FFD0BFA6C.taxon	description	Genetics COI Based on 7 specimens, maximum within-species distance is 2.28 % and the nearest neighbour, diverging by a minimum of 5.02 %, is Euura putoni. Nuclear Based on 2 specimens, maximum within-species distance is 0.7 %. The nearest neighbour, diverging by a minimum of 3.19 %, is Euura notabilis.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0AD8C09740FE9FFD0BFA6C.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Bulgaria, Finland, France, Germany, Norway, Russia, Sweden, Switzerland, and the United Kingdom.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0AD8C09792F9EBFDD0F82C.taxon	description	The group is well defined genetically and based on female lancets. The lancets have short and stout setae, are often strongly curved, and 3 – 11 basal annuli are without distinct serrulae and cypsellae. Most of the specimens are mostly or nearly completely black, only E. viduata females are sometimes extensively pale. Young larvae of probably all the species of the group live hidden between leaves which do not expand and separate from each other after oviposition. Older larvae feed “ normally ”, exposed on the leaf edges. Eight species are recognised. Euura leucolena (short valvula 3, more curved lancet) and E. erecta (long valvula 3, less curved lancet) are genetically highly variable and not clearly defined based on nuclear genes. The boundaries between them and the exact number of species (especially in the case of E. leucolena) remains currently uncertain. Because of these uncertainties, we have not identified all the larvae sequenced during this study.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0BD8C1972DFEEEFB5CF85F.taxon	description	Figs 298, 520	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0BD8C1972DFEEEFB5CF85F.taxon	diagnosis	Diagnosis The males are easy to identify based on the penis valve, pseudoceps of which forms a long filament or spine at the apex. From the other species with a similar penis valve (with spine-like apex of pseudoceps), E. cornuta differs by straight spine of pseudoceps, apically distinctly broadening paravalva, more or less perpendicular apical margin of paravalva in relation to the spine of pseudoceps, and not having a valvispina. The females are more difficult to distinguish from the other species of the group. Nevertheless, the pale clypeus and malar space, black or slightly pale pronotum and tegula, at least apically distinctly black cerci, short valvula 3, straight lancet with 18 – 19 annuli, and relatively large size (6.5 – 7.5 mm) should enable identification of the females. Female 6.5 – 7.5 mm. Head black to extensively brown around eyes; labrum, clypeus, and malar space pale; supraclypeal area black; thorax black; pronotum black or posteriorly slightly pale; tegula black or slightly pale; pterostigma brown or centrally paler than externally; metafemur black to extensively pale; metatibia pale or brown; hind tarsus black or brown; abdomen mostly black, hypopygium posteriorly and valvifer 2 pale or brown, terga 9 – 10 black to extensively pale, sometimes also terga 7 – 8 pale; valvula 3 black or basally slightly pale; cerci distinctly black at least apically; mesepisternum smooth or slightly matt; valvula 3 short, in dorsal view gradually narrowing to an acute tip. Male 5 – 7 mm. Head black to extensively brown around eyes; labrum and clypeus pale, malar space pale or black; supraclypeal area black; thorax black; pronotum black; tegula black or slightly pale; pterostigma brown; metafemur black or pale; metatibia pale or brown; hind tarsus black or brown; abdomen black, sternum 9 pale; mesepisternum smooth or slightly matt; projection of tergum 8 indistinct.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0BD8C1972DFEEEFB5CF85F.taxon	materials_examined	Type material examined Holotype Amauronematus cornutus FINLAND – Uusimaa • ♂; Kirkkonummi; 60.126 ° N, 24.439 ° E; 3 May 1959; V. Karvonen leg.; MZH, http: // id. luomus. fi / GL. 2466.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0BD8C1972DFEEEFB5CF85F.taxon	biology_ecology	Host plants Salix caprea, S. glauca.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0BD8C1972DFEEEFB5CF85F.taxon	description	Genetics COI Based on 3 specimens, maximum within-species distance is 0.46 % and the nearest neighbour, diverging by a minimum of 6.84 %, is Euura erecta. Nuclear Based on 3 specimens, maximum within-species distance is 0.19 % (0.31 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.97 %, is Euura erecta (ZMUO. 063230).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0BD8C1972DFEEEFB5CF85F.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Bulgaria, Finland, Norway, Russia, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0CD8C69757FEEEFB8DFA2D.taxon	description	Figs 300, 526 – 527	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0CD8C69757FEEEFB8DFA2D.taxon	diagnosis	Diagnosis Females are most similar to E. malaisei, which also has a rather long valvula 3 (tends to be shorter in other species of viduata group). The lancet is less curved in E. erecta than in E. malaisei. Penis valves are most similar to E. malaisei, E. leucolena and E. rectiserra, but in some specimens (DEIGISHym 12074, 210009 _ LGB) of E. erecta the apex of pseudoceps forms a small filament. The other males we have checked (DEI-GISHym 12062, DEI-GISHym 84015) lack the filament at the apex of pseudoceps and are genetically somewhat different. Nevertheless, the genetic variability is large as indicated by heterozygous females. The females, which we have identified based on morphology, seem to cover the genetic variability between the males. The specimens 210008 _ SSR and 210009 _ LGB were caught in copula on Salix lanata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0CD8C69757FEEEFB8DFA2D.taxon	biology_ecology	Host plants Salix lanata. Macek et al. (2020) reported Salix aurita, but this is probably based on a misidentification of the sawfly. For example, the penis valve shown for E. erecta by Macek et al. (2020) belongs to the E. bipartita group (perhaps E. connecta).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0CD8C69757FEEEFB8DFA2D.taxon	description	Genetics COI Based on 21 specimens, maximum within-species distance is 3.5 % and the nearest neighbour, diverging by a minimum of 0.15 %, is Euura leucolena. Nuclear Based on 21 specimens, maximum within-species distance is 1.08 % (1.01 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.09 %, is Euura leucolena (ZMUO. 041208).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0CD8C69757FEEEFB8DFA2D.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Norway, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0CD8C79725FA2DFB9AFA6A.taxon	description	Figs 302 – 303, 528 – 529	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0CD8C79725FA2DFB9AFA6A.taxon	diagnosis	Diagnosis Delimitation of the species is uncertain. Based on similarities in female, male and larval morphology (green with black dots), we have not split E. leucolena up, despite its large genetic diversity and wide range of host willow species. Large within-species genetic diversity is supported by some specimens having high levels of heterozygosity. The females are nearly completely black to slightly pale (clypeus, pronotum, tegula, metafemur, and tip of abdomen can be extensively pale, which does not clearly correlate with different species of host willow). The mesepisternum is slightly matt, valvula 3 is short, lancet is curved and has 13 – 17 annuli. Penis valves do not seem to be distinguishable from E. rectiserra, but the valviceps might be less expanded dorso-apically compared to E. malaisei.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0CD8C79725FA2DFB9AFA6A.taxon	materials_examined	Type material examined Lectotype Amauronematus saarineni, here designated FINLAND – Häme • ♀; Aitolahti; 61.544 ° N, 23.888 ° E; 17 May 1936; A. Saarinen leg.; MZH, http: // id. luomus. fi / GL. 2458. Notes Brischke (1883: 197) described two types of green larvae collected from Salix purpurea (under the name Salix helix), with and without black dots on annuli. The larvae without distinct black dots may belong to E. viduata, while E. leucolena and related species all seem to have distinct rows of black dots on some of the annulets. Best fit to the description of adult leucolenus Brischke is DEI-GISHym 12009 (except that the tip of the abdomen is paler).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0CD8C79725FA2DFB9AFA6A.taxon	biology_ecology	Host plants Several species of Salix have been named as host plants, but these all need checking, because of the unclear taxonomy of E. leucolena: S. aurita, S. caprea, S. cinerea (Macek et al. 2020), S. purpurea (Brischke 1883), S. repens (Benson 1948 b), S. phylicifolia (Kangas 1985).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0CD8C79725FA2DFB9AFA6A.taxon	description	Genetics COI Based on 30 specimens, maximum within-species distance is 4.56 % and the nearest neighbour, diverging by a minimum of 0 %, is Euura malaisei. Nuclear Based on 30 specimens, maximum within-species distance is 1.2 % (1.19 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.03 %, is Euura viduata group larva ZMUO. 063332.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0CD8C79725FA2DFB9AFA6A.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Germany, and Norway.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0DD8C4975BF9EEFC03F9A5.taxon	description	Figs 301, 530	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0DD8C4975BF9EEFC03F9A5.taxon	diagnosis	Diagnosis Females are most similar to E. erecta: see differences mentioned under that species. Penis valves are very similar to E. leucolena and E. rectiserra. Dorso-apically, the valviceps might be more expanded in E. malaisei than in E. leucolena and E. rectiserra. Female 5.0 (6.5) mm. Head black; labrum black or brown; clypeus black; supraclypeal area black; thorax black; pronotum black; tegula black; pterostigma centrally paler than externally; metafemur black or apically pale; metatibia brown or pale; hind tarsus black; abdomen black; hypopygium black or posteriorly slightly pale; valvifer 2 at least partly pale or brown; tergum 9 black to extensively pale; tergum 10 black or slightly pale; valvula 3 basally slightly pale; cerci pale with darkened tip; mesepisternum slightly matt; valvula 3 long, in dorsal view gradually narrowing, with acute tip. Male 4.0 – 4.5 mm. Head black; labrum black or brown; clypeus black; supraclypeal area black; thorax black; pronotum black; tegula black; pterostigma centrally paler than externally; metafemur black or apically pale; metatibia brown or pale; hind tarsus black; sternum 9 pale; mesepisternum slightly matt; projection of tergum 8 small.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0DD8C4975BF9EEFC03F9A5.taxon	materials_examined	Type material examined Holotype Decanematus longiserra RUSSIA – Kamchatka oblast • ♀; Klutchi [Klyuchi]; 56.32 ° N, 160.85 ° E; R. Malaise leg.; NHRS, NHRS-HEVA 000006442. Notes Holotype length 6.5 mm, or 6.9 mm including valvula 3.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0DD8C4975BF9EEFC03F9A5.taxon	biology_ecology	Host plants Salix glauca, S. lanata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0DD8C4975BF9EEFC03F9A5.taxon	description	Genetics COI Based on 6 specimens, maximum within-species distance is 3.75 % and the nearest neighbour, diverging by a minimum of 0 %, is Euura leucolena. Nuclear Based on 6 specimens, maximum within-species distance is 0.59 % (0.51 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.17 %, is Euura erecta (ZMUO. 063230).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0DD8C4975BF9EEFC03F9A5.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, and Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0ED8C5973AF9B4FC03F9A1.taxon	description	Figs 299, 521	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0ED8C5973AF9B4FC03F9A1.taxon	diagnosis	Diagnosis Apically extensively pale abdomen but black tegula and pronotum, short valvula 3, strongly curved lancet with 16 – 18 annuli, and size (6.0 – 8.0 mm) should enable identification of the female. Male has pale sternum 9, black tegula and pronotum, and unique penis valve (1.5 mm, small valvispina, paravalva basally and apically similarly broad, broad apex of pseudoceps, small invagination between valvispina and broad and round lobe of paravalva). Penis valves of E. acuminalis and E. annulata are similar, but in addition to some differences in the shape of the paravalva (more elongate or basally narrower than apically), males of these species are extensively pale. When he compared Amauronematus temporalis with nitidipleuris, Hellén (1970) relied on Lindqvist (1945), who apparently misinterpreted nitidipleuris. According to Lindqvist’s drawing (1945: fig. 4), nitidipleuris has a straight lancet, but at least the lectotype has a curved lancet, as in the type of temporalis. The COI sequence (458 bp) of the studied male (http: // id. luomus. fi / GP. 110187) is identical to a 130 bp fragment from the holotype of temporalis, and matches the sequenced larva rather well (1.09 % different) and differs clearly from the other species by a minimum of 6.55 %.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0ED8C5973AF9B4FC03F9A1.taxon	materials_examined	Type material examined Lectotype Amauronematus nitidipleuris, here designated RUSSIA – Kamchatka oblast • ♀; Klutchi [Klyuchi]; 56.32 ° N, 160.85 ° E; R. Malaise leg.; NHRS, NHRS-HEVA 000006358. Holotype Amauronematus temporalis FINLAND – South Ostrobothnia • ♀; Alavus; 19 May 1937; A. Saarinen leg.; MZH, http: // id. luomus. fi / GL. 2476.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0ED8C5973AF9B4FC03F9A1.taxon	biology_ecology	Host plants Unknown, but probably Salix like the other species in the group. Lindqvist (1953) reported two reared specimens from Salix (mentioned also by Kontuniemi 1960), but because he had apparently misinterpreted nitidipleuris earlier (Lindqvist 1945), the specimens might represent a different species in the group. The larva sequenced here was swept from a mixture of Salix and Betula nana.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0ED8C5973AF9B4FC03F9A1.taxon	description	Genetics COI Only one sequence (1087 bp) available, from a larva. The nearest neighbour, diverging by a minimum of 5.78 %, is Euura viduata. Nuclear Only one sequence available, from a larva with haplotypes diverging by 0.21 %. The nearest neighbour, diverging by a minimum of 1.15 %, is Euura erecta (ZMUO. 063230).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0ED8C5973AF9B4FC03F9A1.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, and Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0FD8CA9720F9B7FD75FA11.taxon	description	Figs 304, 531	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0FD8CA9720F9B7FD75FA11.taxon	diagnosis	Diagnosis Females can be recognized mainly by the short valvula 3 and straight lancet with about 14 annuli and flat serrulae. The smooth mesepisternum can also help to distinguish the females from the similar E. leucolena. Males might not be distinguishable from E. leucolena. Macek et al (2020) reported this species under the name Amauronematus leucolenus. Female 4.5 – 5.5 mm (n = 2). Head black or weakly brown around eyes; labrum brown or pale; clypeus partly pale; supraclypeal area black; thorax black; pronotum posteriorly slightly or extensively pale; tegula slightly or extensively pale; pterostigma brown or centrally paler than externally; metafemur mostly black or pale; metatibia brown or pale; hind tarsus black; abdomen black; tergum 9 and valvifer 2 black or slightly pale, hypopygium partly brown; mesepisternum (usually?) smooth. Male 4.0 mm (n = 2). Head black; labrum brown or pale; clypeus black; supraclypeal area black; thorax black; pronotum black or slightly pale posteriorly; tegula black; pterostigma centrally paler than externally; metafemur mostly black to mostly pale; metatibia brown or pale; hind tarsus black; sternum 9 pale; mesepisternum (usually?) smooth; projection of tergum 8 small.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0FD8CA9720F9B7FD75FA11.taxon	materials_examined	Type material examined Holotype Decanematus rectiserra FINLAND – Central Ostrobothnia • ♀; Kaarlela; 63.819 ° N, 23.567 ° E; 3 Jun. 1968; J. Kangas; MZH, http: // id. luomus. fi / GL. 9211.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0FD8CA9720F9B7FD75FA11.taxon	biology_ecology	Host plants Salix aurita.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0FD8CA9720F9B7FD75FA11.taxon	description	Genetics COI Based on 4 specimens, maximum within-species distance is 4.41 % and the nearest neighbour, diverging by a minimum of 0 %, is Euura viduatoides. Nuclear Based on 4 specimens, maximum within-species distance is 0.42 % (0.44 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.31 %, is Euura leucolena (ZMUO. 038899).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF0FD8CA9720F9B7FD75FA11.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF00D8C89729FA27FD0DF95E.taxon	description	Figs 306, 522 – 523	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF00D8C89729FA27FD0DF95E.taxon	diagnosis	Diagnosis Smooth mesepisternum, at least slightly pale pronotum, hypopygium, valvifer 2, and tergum 9, pale cerci, distinctly curved lancet with 20 – 24 annuli and basal two annuli with rudiments of serrulae enable identification of the females. The distinctive penis valve (somewhat rectangular paravalva, large broad valvispina, distinct invagination between valvispina and ventroapical lobe of paravalva) enables reliable identification of males. The penis valve of one male (DEI-GISHym 31865, Fig. 524) differs only in lacking an invagination between the valvispina and the ventroapical lobe of the paravalva. Although this specimen might represent an additional species occurring in the Alps, associated females do not seem to be morphologically distinguishable from E. viduata, nor is there a clear genetic difference. Female 4.5 – 6.5 mm. Head black to extensively pale around eyes; labrum pale; clypeus black to pale; supraclypeal area black to pale; antenna black; thorax black to extensively pale laterally and slightly pale dorsally; pronotum slightly to extensively pale posteriorly; tegula black to pale; pterostigma centrally paler than externally; metafemur black to pale; metatibia pale or brown; hind tarsus black or brown; abdomen mostly black to extensively pale apically, but at least hypopygium, valvifer 2 and tergum 9 slightly pale; valvula 3 black to slightly pale basally; cerci pale; mesepisternum smooth; valvula 3 of medium length, in dorsal view gradually narrowing to an acute tip. Male 4 – 5 mm. Head black or slightly brown around eyes; labrum black to pale; clypeus black to pale; supraclypeal area black; antenna black; thorax black; pronotum black to extensively pale; tegula black to extensively pale; pterostigma brown, sometimes centrally paler than externally; metafemur black to extensively pale; metatibia pale or brown; hind tarsus black or brown; abdomen black; sternum 9 brown or pale; mesepisternum smooth; projection of tergum 8 medium-sized. Nematus palliceps has until now mostly been placed as a synonym of Euura clitellata (Serville, 1823), e. g., by Lacourt (1999), and Taeger et al. (2010). The lectotype of N. palliceps does not disagree with the extremely brief characterisation by Hartig (1840), and bears an original cabinet label by Hartig “ palliceps ”. Confusingly, this specimen also bears determination labels by O. Conde and A. Saarinen as respectively Nematus pallicercus Hartig, 1837 and Amauronematus pallicercus (Hartig, 1837). Nematus pallicercus was treated by Konow (1905 b) as a synonym of Amauronematus fallax auct. nec Lepeletier, 1823 [i. e., as a species of the Euura histrio species group], and more recently sometimes as the name of a valid species of Amauronematus, e. g., by Taeger et al. (2010). Hartig (1837) stated that the two female syntypes of N. pallicercus have a body length equivalent to that of “ the preceding species ” [Nematus miniatus], which is given as 3.5 lines [approximately 7.9 mm]. This is significantly larger than the 6.2 mm body length of the lectotype of N. palliceps. Neither does the colour of the abdomen of pallicercus described by Hartig fit the palliceps lectotype [translated from German]: “ the dorsum of the abdomen, which is reddish-edged on the sides, is blackish rusty-brown, only the first segment is deep black ” [palliceps lectotype: terga 1 – 8 uniformly deep black, except for their pale ventral margins]. We conclude that no type specimen of N. pallicercus exists, and because it is not possible to identify it from the description as belonging to a currently recognised taxon, that it should be treated as a species incertae sedis.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF00D8C89729FA27FD0DF95E.taxon	materials_examined	Type material examined Lectotype Tenthredo viduata, here designated SWEDEN – Norrbotten • ♀; Kengis Bruk; 67.192 ° N, 23.506 ° E; MZLU, MZLU 2017260. Notes The slide preparation PR. 721 VV was not located. Lectotype Nematus striatipes, here designated GERMANY • ♂; northern Germany [according to Hartig 1840: 22]; ZSM, DEI-GISHym 12545. Lectotype Nematus lepidotus, here designated GERMANY • ♂; northern Germany [according to Hartig 1840: 22]; ZSM, DEI-GISHym 12544. Lectotype Nematus palliceps, here designated GERMANY • ♀; northern Germany [according to Hartig 1840: 22]; ZSM, GBIF-GISHym 3054. Lectotype Nematus notatus, here designated GERMANY – Nordrhein-Westfalen • ♀; Aachen area; 50.77 ° N, 6.09 ° E; ZSM, GBIF-GISHym 3059. Lectotype Amauronematus viduatus var. laetus, here designated GERMANY – Nordrhein-Westfalen • ♀; Crefeld [Krefeld]; Ulbricht leg.; 51.34 ° N, 6.58 ° E; SDEI, GBIF-GISHym 4105. Holotype Amauronematus (Brachycoluma) spaethi FRANCE – Corsica • ♀; SW Porto Vecchio, Tamaricciu Valley; 41.57 ° N, 9.24 ° E; 20 m a. s. l.; 7 Apr. 2004; J. Späth leg.; reared ex larva on Salix atrocinerea; SDEI, GBIF-GISHym 4104.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF00D8C89729FA27FD0DF95E.taxon	biology_ecology	Host plants A wide spectrum of Salix spp. (Taeger et al. 1998; Macek et al. 2020).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF00D8C89729FA27FD0DF95E.taxon	description	Genetics COI Based on 29 specimens, maximum within-species distance is 6.09 % and the nearest neighbour, diverging by a minimum of 1.82 %, is Euura erecta. Nuclear Based on 24 specimens, maximum within-species distance is 1 % (0.93 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.32 %, is Euura viduata group specimen DEI-GISHym 31865.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF00D8C89729FA27FD0DF95E.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, France, Germany, Italy, Morocco, Norway, Sweden, Switzerland, and the United Kingdom.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF02D8CE9737F919FDC6FE1F.taxon	description	Figs 305, 525	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF02D8CE9737F919FDC6FE1F.taxon	diagnosis	Diagnosis The distinctly pale clypeus, pronotum and tegula, smooth mesepisternum, and slightly curved lancet with 14 – 16 annuli usually enable identification of the females, but separation from E. leucolena (mesepisternum usually slightly matt) might not always be reliable. Two putative males without sequence data (a paratype of viduatoides [http: // id. luomus. fi / GL. 9214] and ZMUO. 032626) have distinctly pale tegula and pronotum (black in most other species, except E. viduata in part) and a similar penis valve to E. leucolena, except that the valviceps is broader. Female 5.0 – 6.0 mm. Head black to slightly pale around eyes; labrum pale; clypeus pale; supraclypeal area black; antenna black; thorax black; pronotum extensively pale; tegula extensively pale; pterostigma pale or centrally paler than externally; metafemur mostly black to pale; metatibia pale or brown; hind tarsus black; abdomen mostly black to extensively pale apically; at least hypopygium, valvifer 2 and tergum 9 slightly pale; valvula 3 slightly pale basally; cerci pale; mesepisternum smooth; valvula 3 of medium length, in dorsal view gradually narrowing, with an acute tip. Male 4.5 – 5.0 mm (n = 2). Association with female not confirmed. Head black or slightly brown around eyes; labrum pale; clypeus pale; malar space black or slightly pale; supraclypeal area black or slightly pale; antenna black; thorax black; pronotum slightly to extensively pale; tegula slightly to extensively pale; pterostigma brown or centrally paler than externally; metafemur extensively pale; metatibia pale; hind tarsus black; abdomen black; sternum 9 pale; mesepisternum smooth; projection of tergum 8 small.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF02D8CE9737F919FDC6FE1F.taxon	materials_examined	Type material examined Holotype Amauronematus viduatoides FINLAND – Uusimaa • ♀; Helsinki, Lövö; 60.18 ° N, 24.85 ° E; 9 Apr. 1952; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 9213. Holotype Amauronematus branderi FINLAND – Häme • ♀; Urjala; 61.08 ° N, 23.56 ° E; 7 Jun. 1965; T. Brander leg.; MZH, http: // id. luomus. fi / GL. 9208. Notes The COI sequence (281 bp) of the holotype female of branderi is identical to ZMUO. 040884, ZMUO. 038738, ZMUO. 043842, ZMUO. 038736, ZMUO. 038737, and ZMUO. 038735.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF02D8CE9737F919FDC6FE1F.taxon	biology_ecology	Host plants Salix pentandra. Kangas (1985) recorded Salix phylicifolia and Macek et al. (2020) S. aurita, but it is not certain that the sawfly species was correctly identified.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF02D8CE9737F919FDC6FE1F.taxon	description	Genetics COI Only one sequence available. The nearest neighbour, diverging by a minimum of 0 %, is Euura rectiserra. Nuclear Only one sequence available, a female with haplotypes diverging by 0.09 %. The nearest neighbour, diverging by a minimum of 0.45 %, is Euura leucolena (ZMUO. 037242).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF02D8CE9737F919FDC6FE1F.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland. Species not assigned to groups	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF04D8CF9739FE49FB8DFE50.taxon	description	Figs 307, 532	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF04D8CF9739FE49FB8DFE50.taxon	diagnosis	Diagnosis Females (6.5 – 8.0 mm) are most similar to E. hyperborea, but pronotum and tegula are distinctly pale (black in E. hyperborea) and the hairs on head and thorax are somewhat shorter. Males are not clearly distinguishable from melanocephalus group species with a pale pterostigma (E. cadderensis, E. ferruginea, E. kangasi).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF04D8CF9739FE49FB8DFE50.taxon	materials_examined	Type material examined Holotype Amauronematus anthracinus FINLAND – Lapin Lääni • ♀; Kilpisjärvi; 69.04 ° N, 20.81 ° E; 9 May 1951; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 3409. Notes Best morphological match: DEI-GISHym 21425. Holotype Amauronematus macrophthalmus FINLAND – Uusimaa • ♀; Helsinki, Munksnäs [Munkkiniemi]; 60.22 ° N, 24.89 ° E; 26 May 1935; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 2534. Notes Best morphological match: DEI-GISHym 20974. Holotype Amauronematus varians FINLAND – Uusimaa • ♀; Helsinge [Vantaa]; 60.30 ° N, 24.90 ° E; 20 May 1960; E. Lindqvist leg.; MZH, http: // id. luomus. fi / GL. 3554. Notes Best morphological match: DEI-GISHym 20974. COI sequence (658 bp) of the holotype is identical to ZMUO. 037292.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF04D8CF9739FE49FB8DFE50.taxon	biology_ecology	Host plants Salix spp.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF04D8CF9739FE49FB8DFE50.taxon	description	Genetics COI Based on 9 specimens, maximum within-species distance is 4.1 % and the nearest neighbour, diverging by a minimum of 0.46 %, is Euura hyperborea. Nuclear Based on 7 specimens, maximum within-species distance is 0.4 % (0.23 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 1.41 %, is Euura distinguenda.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF04D8CF9739FE49FB8DFE50.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Norway, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF05D8CF973EFDE7FB8DF9A4.taxon	description	Figs 308, 533	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF05D8CF973EFDE7FB8DF9A4.taxon	diagnosis	Diagnosis Females are most similar in colouration (mostly black body and black pterostigma) and lancet structure to E. toeniata, but the malar space is about 1.0 – 1.2 times as long as diameter of front ocellus (more than 1.2 times in E. toeniata). Males are coloured similarly to the females and in combination with examination of the penis valves can be reliably separated from the other species of Euura.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF05D8CF973EFDE7FB8DF9A4.taxon	materials_examined	Type material examined Lectotype Amauronematus distinguendus, here designated GERMANY – Sachsen • ♀; Tharandt; 50.97 ° N, 13.53 ° E; W. Baer leg.; reared ex larva on Salix sp.; ZSM, GBIF-GISHym 3047.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF05D8CF973EFDE7FB8DF9A4.taxon	biology_ecology	Host plants Salix fragilis, S. phylicifolia (Kangas 1985), S. pentandra, S. acutifolia Willd., S. triandra.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF05D8CF973EFDE7FB8DF9A4.taxon	description	Genetics COI Based on 5 specimens, maximum within-species distance is 1.98 % and the nearest neighbour, diverging by a minimum of 3.05 %, is Euura anthracina. Nuclear Based on 4 specimens, maximum within-species distance is 0.81 % (0.07 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 1.41 %, is Euura anthracina.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF05D8CF973EFDE7FB8DF9A4.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Germany, and Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF05D8CC9736F9B3FB8DFC07.taxon	description	Figs 309, 534	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF05D8CC9736F9B3FB8DFC07.taxon	diagnosis	Diagnosis Most similar to E. anthracina, but in E. hyperborea the pronotum and tegula are black and the hairs on the head and thorax are somewhat longer.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF05D8CC9736F9B3FB8DFC07.taxon	materials_examined	Type material examined Holotype Nematus hyperboreus SWEDEN • ♀; Dalarna; C. H. Boheman leg.; NHRS, NHRS-HEVA 000003844.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF05D8CC9736F9B3FB8DFC07.taxon	biology_ecology	Host plants Salix spp.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF05D8CC9736F9B3FB8DFC07.taxon	description	Genetics COI Based on 7 specimens, maximum within-species distance is 0.31 % and the nearest neighbour, diverging by a minimum of 0.46 %, is Euura anthracina. Nuclear Based on 5 specimens, maximum within-species distance is 0.17 % (0.23 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 2.03 %, is Euura anthracina.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF05D8CC9736F9B3FB8DFC07.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Norway, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF06D8CD9721FC54FBE1FDF7.taxon	description	Figs 311, 535	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF06D8CD9721FC54FBE1FDF7.taxon	diagnosis	Diagnosis Small subapical tooth of claws, colouration (male largely black; in female, pterostigma basally paler than apically, abdomen dorsally black, metafemur at least partly pale), structure of valvula 3 (in dorsal view rather broad, not tapering, and posteriorly with invagination) and penis valve enable separation of the species from the other Euura. The shape of valvula 3 varies somewhat, but there is no clear gap in variability and apparently no correlation with variability in mesepisternum colouration (from completely black to completely pale).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF06D8CD9721FC54FBE1FDF7.taxon	materials_examined	Type material examined Lectotype Pachynematus imperfectus var. claristernis, here designated GERMANY – Mecklenburg-Vorpommern • ♀; Teschendorf in Mecklenburg; 53.45 ° N, 13.36 ° E; 11 Apr. 1896; F. W. Konow leg.; ZSM, GBIF-GISHym 3221. Holotype Pachynematus (Larinematus) tatricus SLOVAKIA – High Tatra • ♀; Tatranská Lomnica, Štart; 49.179 ° N, 20.255 ° E; 1150 m a. s. l.; 15 May 2007; O. Majzlan leg.; SNMC. Notes Photos examined.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF06D8CD9721FC54FBE1FDF7.taxon	biology_ecology	Host plants Larix spp.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF06D8CD9721FC54FBE1FDF7.taxon	description	Genetics COI Based on 5 specimens, maximum within-species distance is 2.28 % and the nearest neighbour, diverging by a minimum of 5.78 %, is Euura hulteni. Nuclear Based on 3 specimens, maximum within-species distance is 1.2 % (0.31 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 2.87 %, is Euura villosa.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF06D8CD9721FC54FBE1FDF7.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Austria, Finland, Germany, and Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF07D8CD9771FD44FC50F9BE.taxon	description	Fig. 536	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF07D8CD9771FD44FC50F9BE.taxon	diagnosis	Diagnosis Long postocellar area (more than 3 times as long as diameter of lateral ocellus), extensively pale head and abdomen, black hind femur and tarsus, and small subapical tooth of claws distinguish the females from other Euura. Partly infuscate wings, extensively pale head and abdomen, small subapical tooth of claws, and penis valve should distinguish the males from other Euura. Rare in Europe, known only in Central Europe.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF07D8CD9771FD44FC50F9BE.taxon	biology_ecology	Host plants Larix spp. (Xiao et al. 1992; Pschorn-Walcher & Altenhofer 2000). There may be up to two generations per year (Pschorn-Walcher & Altenhofer 2000).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF07D8CD9771FD44FC50F9BE.taxon	description	Genetics COI No data. Nuclear No data.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF07D8CD9771FD44FC50F9BE.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Czech Republic and Japan.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF07D8F29733F9B9FCF5FA3D.taxon	description	Fig. 312	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF07D8F29733F9B9FCF5FA3D.taxon	diagnosis	Diagnosis We have studied only two specimens (lectotype females of N. nigriventris and A. varianus). Colouration (nearly completely black), size (6.5 mm), and lancet (short setae,? 16 – 17 serrulae, serrulae with distinct cypsellae, long, weakly protruding, and with long basal extension) distinguish the species from the other Euura. Externally perhaps most easily confused with members of the E. viduata group. Female 6.5 mm (Lindqvist 1959 a; MacGillivray 1919). Head black; antenna, labrum and clypeus black; thorax black, pronotum and tegula black; pterostigma brown; abdomen nearly completely black, valvifer 2 brown, valvula 3 black; metafemur black; tibiae and tarsi brown; antenna not reaching pterostigma; claws bifid; valvula 3 elongate, gradually tapering in dorsal view, and acute at apex; lancet with? 16 – 17 serrulae.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF07D8F29733F9B9FCF5FA3D.taxon	materials_examined	Type material examined Lectotype Nematus nigriventris, here designated RUSSIA – Novaja Zemlya • ♀; Matotschkin Scharr [Matochkin Strait]; 73.3 ° N, 55.6 ° E; 1875; NHRS, NHRS-HEVA 000006477. Lectotype Amauronematus varianus, here designated USA – Alaska • ♀; Camden Bay, West of Konganevik; 70.02 ° N, 145.36 ° W; 27 Jun. 1914; F. Johansen leg.; CNC, CNC 1057058.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF07D8F29733F9B9FCF5FA3D.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF07D8F29733F9B9FCF5FA3D.taxon	description	Genetics COI No data. Nuclear No data.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF07D8F29733F9B9FCF5FA3D.taxon	distribution	Distribution and material examined Holarctic. Specimens studied are from Russia and the USA.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF38D8F3973AFA3CFEABF81E.taxon	description	Figs 313, 537	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF38D8F3973AFA3CFEABF81E.taxon	diagnosis	Diagnosis Live adult females are green, and most similar to species in the bergmanni and oligospila groups, from which E. poecilonota is best distinguished by its distinctive lancet and penis valve. Antenna black. Males are extremely rare. The larval stage of the hyalinus type was described by Dyar (1895) under the name Nematus lateralis. Only one male is known (DEI-GISHym 12527), confirmed to be this species based on a 207 bp sequence of COI that is identical to some of the females.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF38D8F3973AFA3CFEABF81E.taxon	materials_examined	Type material examined Lectotype Nematus continuus, here designated RUSSIA – Tatarstan • ♀; Kasan Province; 55.8 ° N, 49.1 ° E; 10 Jul.; E. Eversmann leg.; ZIN, DEIGISHym 30049. Holotype Amauronematus nigridorsis RUSSIA – Irkutskaja oblast • ♀; Irkutsk; 52.29 ° N, 104.24 ° E; ZIN, DEI-GISHym 30177. Holotype Pteronidea subnitens SWEDEN – Skåne • ♀; Åhus; 55.93 ° N, 14.29 ° E; 15 Jul. 1937; I. Agrell leg.; MZLU, MZLU 2017316.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF38D8F3973AFA3CFEABF81E.taxon	biology_ecology	Host plants Betula spp., but not recorded from B. nana (Wong 1954; Tenow 1963; Kangas 1985). One generation per year (Wong 1954). The female cuts characteristic slits in birch leaves and one egg is inserted into the edge of each slit.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF38D8F3973AFA3CFEABF81E.taxon	description	Genetics COI Based on 8 specimens, maximum within-species distance is 1.37 % and the nearest neighbours, diverging by a minimum of 6.23 %, are Euura monticola, E. perkioemaekii, and E. sordidiapex. Nuclear Based on 6 specimens, maximum within-species distance is 1.64 % (0.22 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 2.71 %, is Euura frenalis.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF38D8F3973AFA3CFEABF81E.taxon	distribution	Distribution and material examined Holarctic. Specimens studied are from Canada (only genetics), Estonia, Finland, Germany, Russia, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3AD8F0975BFEEEFBF9FAFE.taxon	description	Figs 314, 538	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3AD8F0975BFEEEFBF9FAFE.taxon	diagnosis	Diagnosis Its small size (3.5 – 4.5 mm), largely pale body, simple claws, and distinctive lancet and penis valve distinguish this species from the others.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3AD8F0975BFEEEFBF9FAFE.taxon	materials_examined	Type material examined Lectotype Pachynematus pumilio, here designated GERMANY – Mecklenburg-Vorpommern • ♀; Teschendorf in Mecklenburg; 53.45 ° N, 13.36 ° E; Apr. 1896; F. W. Konow leg.; SDEI, GBIF-GISHym 4122. Paralectotypes Pachynematus pumilio GERMANY – Mecklenburg-Vorpommern • 1 ♀; same locality as for lectotype • 5 May 1893; SDEI, GBIF-GISHym 4124 • 2 ♂♂; same locality as for lectotype; 29 Apr. 1903; SDEI, GBIF-GISHym 4123, GBIF-GISHym 4125.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3AD8F0975BFEEEFBF9FAFE.taxon	biology_ecology	Host plants Ribes nigrum (Hukkinen 1922). Larvae feed singly inside the berries. One generation per year.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3AD8F0975BFEEEFBF9FAFE.taxon	description	Genetics COI Based on 12 specimens, maximum within-species distance is 1.08 % and the nearest neighbour, diverging by a minimum of 6.74 %, is Euura fallax. Nuclear Only one sequence available. The nearest neighbour, diverging by a minimum of 2.5 %, is Euura oligospila.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3AD8F0975BFEEEFBF9FAFE.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, Germany, Russia, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3AD8F19759FA79FBF8FABC.taxon	description	Figs 310, 539	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3AD8F19759FA79FBF8FABC.taxon	diagnosis	Diagnosis Its large size (8.0 – 12.0 mm), extensively yellow body, and black costa and pterostigma enable its separation from other species of Euura.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3AD8F19759FA79FBF8FABC.taxon	materials_examined	Type material examined Lectotype Nematus inflatus, here designated SWEDEN – Skåne • ♀; Lund; 55.71 ° N, 13.19 ° E; MZLU, MZLU 2017309. Lectotype Pteronidea salicis var. obscurior, here designated GERMANY – Nordrhein-Westfalen • ♀; Solingen; 51.17 ° N, 7.07 ° E; ZSM, GBIF-GISHym 3369. Paralectotype Pteronidea salicis var. obscurior GERMANY – Nordrhein-Westfalen • ♂; Solingen; 51.17 ° N, 7.07 ° E; ZSM, GBIF-GISHym 3370.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3AD8F19759FA79FBF8FABC.taxon	biology_ecology	Host plants Salix spp., preferably S. fragilis (Roininen & Tahvanainen 1989), occasionally Populus (Çalmasur & Özbek 2006). More than one generation per year in suitable conditions (Pschorn-Walcher & Altenhofer 2000).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3AD8F19759FA79FBF8FABC.taxon	description	Genetics COI Based on 5 specimens, maximum within-species distance is 0.78 % and the nearest neighbour, diverging by a minimum of 5.32 %, is Euura ferruginea. Nuclear Only one sequence available. The nearest neighbour, diverging by a minimum of 2.28 %, is Euura anthracina.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3AD8F19759FA79FBF8FABC.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from Finland, France, Germany, and Sweden.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3BD8F7972FFABBFB7CFB2E.taxon	description	Figs 88, 315 – 316, 540 – 541	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3BD8F7972FFABBFB7CFB2E.taxon	diagnosis	Diagnosis Females could be confused with darker specimens of the Euura ribesii group. Details of the lancet can distinguish them: basal-most annulus narrower (less than 0.5 times as long as broad) and setae longer and more hair-like in spiraeae than in the ribesii group (basal-most annulus more than 0.5 times as long as broad and setae shorter and more spine-like). Males (extremely rare in Europe) could perhaps be best recognized by the combination of ventrally pale abdomen and penis valve structure. The pterostigma varies from pale to black in females, possibly also in males. A female identified as N. dengi in SDEI (DEI-GISHym 83965) does not differ in any significant way from E. spiraeae. The lancet of DEI-GISHym 83965 does seem to have longer setae than two other saws we examined from Europe (E. spiraeae does not lack setae as implied in the original description of dengi), but this does not seem to be sufficient evidence for the existence of an additional species. A male from China (DEI-GISHym 1916) is possibly conspecific. A male from Switzerland (DEI-GISHym 14075) has a brown, rather round pterostigma, pale clypeus, supraclypeal area, pronotum and tegula; clypeus with distinct emargination; abdomen ventrally pale; projection of tergite 8 rather large (which seems to be similar in dengi DEI-GISHym 1916). The studied specimens from China (DEI-GISHym 83965, DEI-GISHym 1916) are darker than European specimens, with black pronotum, clypeus, and supraclypeal area (pale in most if not all European specimens). The specimens from China (dengi) fit best with Euura spiraeae hokkaido from Japan. Euura spiraeae okutaniana is even darker than dengi and European spiraeae, with a completely black hind tibia and apically black metafemur (at least basal two-thirds of tibia pale and metafemur nearly completely pale in dengi and European spiraeae). The penis valve of spiraeae okutaniana, with a slight invagination between valvispina and ventroapical lobe of paravalva, does not seem to be distinguishable from the European male (DEI-GISHym 14075; Fig. 540), but is slightly different from dengi (DEI-GISHym 1916; Fig. 541), which lacks the invagination between valvispina and ventroapical lobe of the paravalva. However, this type of difference in penis valves does not seem likely to be reliable, because similar or greater differences are frequently found within other species of Euura. The apparent differences in the length of a cercus relative to valvula 3 (reaching at most to the middle of valvula 3 in European spiraeae according to Hara et al. 2022, but beyond the middle of valvula 3 in Japanese specimens) could be affected by preservation of the specimens (cerci tend to get retracted towards the head, away from the tip of valvula 3, as the abdomen dries). For example, in the Chinese female (DEI-GISHym 83965), which otherwise fits spiraeae hokkaido, the proportional relations of cerci and valvula 3 look similar to those in European specimens (Fig. 88 A) while European specimens can look similar to spiraeae okutaniana (Fig. 88 B). The clearest observed differences between Japanese and European spiraeae are in the larvae. The Japanese larvae (Hara et al. al 2022) have a row of distinct lateral black spots on the abdomen or thorax and abdomen, which seem to be lacking in the European larvae. However, the parthenogenetic European spiraeae may only represent a subset of variation of a more widespread (perhaps primarily East Asian) species. Wider sampling and sequencing could help to reveal the extent of variation of E. spiraeae and whether more than one species is involved.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3BD8F7972FFABBFB7CFB2E.taxon	materials_examined	Type material examined Holotype Pteronidea subflava SWEDEN – Uppland • ♀; Stockholm, Frescati; 59.36 ° N, 18.06 ° E; R. Malaise leg.; NHRS, NHRS-HEVA 000003961.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3BD8F7972FFABBFB7CFB2E.taxon	biology_ecology	Host plants Aruncus dioicus (Walter) Fernald in Europe, but also Spiraea spp. in Japan (together with Aruncus dioicus). More than one generation per year in suitable conditions (Pschorn-Walcher & Altenhofer 2000).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3BD8F7972FFABBFB7CFB2E.taxon	description	Genetics COI Based on 10 specimens, maximum within-species distance is 0.61 % and the nearest neighbour, diverging by a minimum of 7.29 %, is Euura salicis. Nuclear Only one sequence available, a female with haplotypes diverging by 0 %. The nearest neighbour, diverging by a minimum of 4.14 %, is Euura myosotidis.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3BD8F7972FFABBFB7CFB2E.taxon	distribution	Distribution and material examined Palaearctic. Specimens studied are from China, Finland, France, Germany, and Switzerland.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3DD8F59741FB28FCF8FC9F.taxon	description	Figs 146, 542	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3DD8F59741FB28FCF8FC9F.taxon	diagnosis	Diagnosis The female is most similar to E. obducta from which it differs in usually having a completely pale metafemur (extensively black in E. obducta), more triangular valvula 3 in dorsal view, and apically curved basal part of lamnium (more or less straight in E. obducta). Males, which are extremely rare in Europe, are best recognised by their penis valves. Abdomen sometimes also dorsally nearly completely pale (terga 3 – 10) (ZMUO. 062019). Pterostigma varies in European specimens from yellowish to dark brown, in North America often (usually?) black.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3DD8F59741FB28FCF8FC9F.taxon	materials_examined	Type material examined Lectotype Nematus leucogaster, here designated GERMANY • ♀; northern Germany [according to Hartig 1840: 22]; ZSM, GBIF-GISHym 3334. Lectotype Nematus hypoleucus, here designated GERMANY – Nordrhein-Westfalen • ♀; Aachen area; 50.77 ° N, 6.09 ° E; ZSM, GBIF-GISHym 3297. Lectotype Nematus micraulius, here designated GERMANY – Nordrhein-Westfalen • ♂; Aachen area; 50.77 ° N, 6.09 ° E; ZSM, GBIF-GISHym 3352. Notes Penis valves lost, but identified by Conde as Pristiphora vaga. Lectotype Nematus punctipleuris, here designated SWEDEN • ♀; Norlandia [Lapland, probably Sweden]; MZLU, MZLU 2017272. Paralectotype Nematus punctipleuris SWEDEN • ♀; Norlandia [Lapland, probably Sweden]; MZLU, MZLU 2017273. Lectotype Nematus punctulatus, here designated SWEDEN • ♀; Torne Lappmark; MZLU, MZLU 2017265 Paralectotypes Nematus punctulatus SWEDEN • 2 ♀♀; Torne Lappmark; MZLU, MZLU 2017266, MZLU 2017269 • 2 ♀♀; [labels illegible]; MZLU, MZLU 2017267, MZLU 2017268. Holotype Pachynematus rugosulus NORWAY – Finnmark • ♀; Jotkajavrek; 69.77 ° N, 23.85 ° E; Jul. 1924; Expedition A. Strand leg.; ZMUN, NHMO: 1000201217. Notes Basal quarter to third of metafemur brown, mesepisternum matt. Best morphological match: ZMUO. 041887.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3DD8F59741FB28FCF8FC9F.taxon	biology_ecology	Host plants Carex spp. More than one generation per year in suitable conditions (Lorenz & Kraus 1957; Kangas 1985).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3DD8F59741FB28FCF8FC9F.taxon	description	Genetics COI Based on 29 specimens, maximum within-species distance is 3.5 % and the nearest neighbour, diverging by a minimum of 6.26 %, is Euura miliaris. Including 8 specimens from North America does not change the results. Nuclear Based on 8 specimens, maximum within-species distance is 0.61 % (1.02 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 2.93 %, is Euura fuscomaculata. When a specimen from North America (DEI-GISHym 15293) is included, maximum within-species distance is 0.8 % (1.02 % based on haplotypes of individual females).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3DD8F59741FB28FCF8FC9F.taxon	distribution	Distribution and material examined Holarctic. Specimens studied are from Canada, Estonia, Finland, France, Germany, Iceland, Norway, Russia, Slovakia, Sweden, United Kingdom, and the USA.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF31D8FB975AFE49FC20FA2A.taxon	description	Notes Among the European Nematinae, adults of Nematus umbratus and Euura melanocephalus have some resemblance to the description of adult N. togatus by Brischke (1883), at least in the thorax being predominantly black and the abdomen mainly yellow. Furthermore, their larvae also sometimes feed on Corylus avellana. However, the forewing stigma and costa of female togatus were described as pale yellow in Brischke (1883), whereas these are almost black in umbratus, and at least the stigma is dark in melanocephalus. Furthermore, the description of the larvae of togatus cannot refer to melanocephalus, because the sides of the body of the latter carry a row of conspicuous yellow spots. As remarked on in the description of E. vesicator which follows the description of togatus in Brischke (1883): [translated from German] “ the females of both species are very similar to each other, while the males are very different. The similarity of the females even approaches complete equality ”. Unless a third Corylus - feeding European Nematus or species of Euura does exist, it is tempting to think that Brischke’s rearing data are wrong. Perhaps larvae of vesicator found their way into the wrong pot after they had finished feeding. Exactly this sort of error most likely led to the comments in Brischke (1883) about E. viminalis having apparently been reared from galls of E. vesicator. The statement that Brischke reared very large numbers of vesicator, on several different occasions, also seems relevant. Following this line of reasoning, perhaps only the male described under togatus (only a single male was reared) really emerged from the Corylus - larvae. The description of the male adult would fit much better with umbratus than does the description of the female, and according to Stritt (1939: as Pteronidea collina) green larvae with black spots (perhaps similar to sequenced larva DEI-GISHym 84094 from unknown host) of umbratus can be found on Corylus avellana in central Europe (umbratus larvae at least on birch are typically largely black). More recently, a few European records under the name togata or togatus have been published (e. g., Pesarini 2012), none of which was reared, but we have not examined such specimens.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF31D8FB9743FA2CFA99F933.taxon	diagnosis	Diagnosis Mostly black, sawsheath in dorsal view strongly narrowed apically. Possibly Euura lindqvisti?	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF31D8FB9716F906FD8BF859.taxon	description	Notes Perhaps a species of Euura.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF32D8F8970CFDB3FCEBF9ED.taxon	description	Fig. 317	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF32D8F8970CFDB3FCEBF9ED.taxon	diagnosis	Diagnosis Superficially similar to E. leionota, but with a different lancet. Probably belongs to Euura, but its group affinity is unclear.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF32D8F8970CFDB3FCEBF9ED.taxon	materials_examined	Type material examined Holotype Amauronematus brunneipictus RUSSIA – Yakutia • ♀; Oleminsk [Olekminsk], on the River Lena; 60.37 ° N, 120.43 ° E; 8 Jun. 1970; E. Kaimuk leg.; MZH, http: // id. luomus. fi / GL. 5124. Notes 18 serrulae.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF32D8F8970CFDB3FCEBF9ED.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF32D8F8970CFDB3FCEBF9ED.taxon	description	Genetics COI No data. Nuclear No data.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF32D8F8970CFDB3FCEBF9ED.taxon	distribution	Distribution and material examined East Palaearctic. Only one specimen studied from Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF32D8F994E6F96BFCA3FA0F.taxon	description	Figs 318 – 319	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF32D8F994E6F96BFCA3FA0F.taxon	diagnosis	Diagnosis Belongs to the E. bergmanni group. So far only three specimens are known, from Primorsky Krai, Russia. As in E. bergmanni, there appear to be clear colour differences between generations. The overwintering generation (May) has black antenna and dorsally extensively black thorax and abdomen (DEIGISHym 83879). Later generations (June – July and perhaps later) are completely or nearly completely pale (DEI-GISHym 88888). Among the European species, the most similar are perhaps E. sylvestris and E. respondens, but the claws of E. chromata appear to distinguish it from all European species treated here. The holotype of E. chromata and one of the sequenced specimens (DEI-GISHym 88888) have distinct small or large subapical teeth clearly separated from the apical one (not distinctly bifid like in the other species of bergmanni and oligospila groups) and in the second sequenced specimen (DEIGISHym 83879) the subapical teeth are minute to small. The clypeus of all three specimens is shallowly emarginate. Of the East Palaearctic species, Euura pallens (see below) seems to have a saw identical to the holotype of chromata (slightly different from the sequenced specimens of chromata), but has a distinctly emarginate clypeus and bifid claws. Euura filiformis (see below) has intermediate claws and clypeus compared to E. chromata and E. pallens, but the serrulae of the lancet seem to be different (with distinct cypsella, unlike E. chromata and E. pallens). Whether E. chromata, E. pallens and E. filiformis are conspecific, cannot be answered conclusively at this point without additional material or sequence data from the type specimens.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF32D8F994E6F96BFCA3FA0F.taxon	materials_examined	Type material examined Holotype Pristiphora chromata RUSSIA • ♀; Kudia River, Amagu [Amgu]; Jul. 1923; T. Cockerell leg.; USNM, USNMENT 00778815, http: // n 2 t. net / ark: / 65665 / 37233 f 010 - e 9 fd- 4291 - bfff- 66 c 89 cf 313 e 8.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF32D8F994E6F96BFCA3FA0F.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF32D8F994E6F96BFCA3FA0F.taxon	description	Genetics COI Based on two specimens, maximum within-species distance is 0.61 % and the nearest neighbour, diverging by a minimum of 6.94 %, is the Euura viridis subgroup. Nuclear Based on two specimens maximum within-species distance is 0.07 % (0.29 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 3.85 %, is Euura respondens.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF32D8F994E6F96BFCA3FA0F.taxon	distribution	Distribution and material examined East Palaearctic. Specimens studied are from Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF33D8FE9727FA4BFCEBFDB5.taxon	description	Fig. 322	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF33D8FE9727FA4BFCEBFDB5.taxon	diagnosis	Diagnosis Similar to Euura minivittata sp. nov., but the serrulae are distinctly more broadly lobed. Nevertheless, conspecificity cannot be excluded.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF33D8FE9727FA4BFCEBFDB5.taxon	materials_examined	Type material examined Holotype Amauronematus crassidens RUSSIA – Irkutskaja oblast • ♀; Irkutsk, Oljhonsk, Popovo; 52.741 ° N, 106.309 ° E; 14 Apr. 1968; B. N. Verzhutskij leg.; MZH, http: // id. luomus. fi / GL. 5123.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF33D8FE9727FA4BFCEBFDB5.taxon	biology_ecology	Host plants Salix sp. (Lindqvist 1970).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF33D8FE9727FA4BFCEBFDB5.taxon	description	Genetics COI No data. Nuclear No data.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF33D8FE9727FA4BFCEBFDB5.taxon	distribution	Distribution and material examined East Palaearctic. Only one specimen studied from Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF34D8FE9722FD86FCEBFA42.taxon	description	Fig. 321	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF34D8FE9722FD86FCEBFA42.taxon	materials_examined	Type material examined Holotype Pachynematus filiformis RUSSIA – Buryatia • ♀; Tunkinsky, Zun-Murino; 51.74 ° N, 102.87 ° E; 30 May 1970; T. Dokitjuk leg.; MZH, http: // id. luomus. fi / GL. 5146. Notes Belongs to the Euura bergmanni group: see discussion under Euura chromata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF34D8FE9722FD86FCEBFA42.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF34D8FE9722FD86FCEBFA42.taxon	description	Genetics COI No data. Nuclear No data.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF34D8FE9722FD86FCEBFA42.taxon	distribution	Distribution and material examined East Palaearctic. Only one specimen studied from Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF34D8FF9734FA15FCB6FAE0.taxon	diagnosis	Diagnosis Most similar to Euura obscuripes (toeniata group) and E. variator (variator group) and synonymy with one of these species cannot be excluded. Except for its mostly black femora, the colouration of the holotype of groenlandicus is most similar to Euura obscuripes specimens DEI-GISHym 19806 (Abisko, Torne Lappmark, Sweden) and DEI-GISHym 84010 (Finnmark, Norway). Similarly to DEI-GISHym 19806 (but not DEI-GISHym 84010), the thorax of the holotype is noticeably wider than the head in dorsal view, which we have not observed in E. variator (as wide as head or only slightly wider). Malar space is about 2.3 – 2.5 times as long as diameter of front ocellus (1.9 – 2.1 times in DEI-GISHym 84010), which is as in the opacipleuris group, but the shape of sawsheath does not fit this group. Based on the shape of serrulae and length of setae (rather short), the lancet (only tip visible in the holotype) seems to be most similar to some specimens of E. obscuripes (DEI-GISHym 19904, DEI-GISHym 12101: the other checked E. obscuripes specimens have longer setae). Although, overall, the holotype of groenlandicus seems to fit best with E. obscuripes, the combination of mostly black femora, extensively pale head and thorax, and long malar space suggest that it may be a different species. Sequencing of nuclear genes might be required to decide more confidently on the status of E. groenlandica and its group affinity. In the absence of unequivocally determined specimens, we remove Euura groenlandica from the list of Palaearctic taxa. Benson (1962) did not examine the holotype of groenlandicus and based his concept of the species on specimens from Greenland that were compared with the holotype. Apparently, the specimens were mostly black, because Benson (1962) found them to be very similar to E. hyperborea, while the groenlandicus type is extensively pale. Benson (1962) synonymised carbonarius with groenlandicus, but we consider carbonarius to be a synonym of E. obscuripes. Therefore, the European records of E. groenlandica by Benson (1962) and Lindqvist (1959 d; under the name Amauronematus carbonarius) might refer to E. obscuripes or some other similar Euura.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF34D8FF9734FA15FCB6FAE0.taxon	materials_examined	Type material examined Holotype Amauronematus groenlandicus GREENLAND – Wollaston Forland • ♀; Landingsdalen; 74.47 ° N, 19.13 ° W; 28 Jul. 1929; Knaben leg.; ZMUN.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF34D8FF9734FA15FCB6FAE0.taxon	biology_ecology	Host plants Not definitely known. Smith (1979) wrote “ Salix (?) ”.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF34D8FF9734FA15FCB6FAE0.taxon	description	Genetics COI No data. Nuclear No data.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF34D8FF9734FA15FCB6FAE0.taxon	distribution	Distribution and material examined Nearctic. Only one specimen studied, from Greenland.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF35D8FC94CDFA77FC04FDCF.taxon	materials_examined	Type material examined Holotype Pristiphora memoriakaszabi MONGOLIA • ♀; Khentii, Mörön 7 km NE; 49.73 ° N, 100.30 ° E; 1200 m a. s. l.; 28 – 29 Jul. 1965; Z. Kaszab leg.; HNHM, DEI-GISHym 80405. Notes Almost completely pale. Possibly a form of E. annulata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF35D8FC94CDFA77FC04FDCF.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF35D8FC94CDFA77FC04FDCF.taxon	description	Genetics COI No data. Nuclear No data.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF35D8FC94CDFA77FC04FDCF.taxon	distribution	Distribution and material examined East Palaearctic. Only one specimen studied, from Mongolia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF36D8FC975FFD8BFCECF902.taxon	description	Fig. 107	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF36D8FC975FFD8BFCECF902.taxon	diagnosis	Diagnosis The species is very similar to E. annulata and E. gehrsi, and synonymy with one of them cannot be excluded. The lancet of E. oehlkei has a concave or straight ventral margin while it tends to be slightly convex in annulata and gehrsi, but the significance of this difference remains unclear. The drawing of the lancet of tarani (Zhelohovcev 1976 a) does fit very well with the lancet of oehlkei. Muche (1973 b) and Zhelohovcev (1976 a) also described males which are similar to gehrsi in their dark colouration. Muche’s (1973 b) drawing of the penis valve does not seem to be entirely accurate, but Zhelohovcev’s (1976 a) drawing fits best with gehrsi in overall shape, although the size of the valvispina fits better with annulata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF36D8FC975FFD8BFCECF902.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF36D8FC975FFD8BFCECF902.taxon	description	Genetics COI No data. Nuclear No data.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF36D8FC975FFD8BFCECF902.taxon	distribution	Distribution and material examined East Palaearctic. Specimens studied are from Kazakhstan.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF36D8FD975FF954FCE3FCE0.taxon	description	Fig. 320	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF36D8FD975FF954FCE3FCE0.taxon	materials_examined	Type material examined Lectotype Pteronus pallens RUSSIA – Irkutskaja oblast • ♀; Irkutsk; 52.29 ° N, 104.24 ° E; B. E. Jakowleff leg.; SDEI, GBIFGISHym 3863. Notes Belongs to the Euura bergmanni group. Removed from the list of West Palaearctic species by Prous et al. (2021). Possibly a synonym of E. sylvestris, although serrulae of the lancet are more prominent than in the studied European specimens. See also discussion under Euura chromata.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF36D8FD975FF954FCE3FCE0.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF36D8FD975FF954FCE3FCE0.taxon	description	Genetics COI No data. Nuclear No data.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF36D8FD975FF954FCE3FCE0.taxon	distribution	Distribution and material examined East Palaearctic. Only one specimen, studied from Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF37D8E2970FFC68FCA3FE50.taxon	description	Fig. 543	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF37D8E2970FFC68FCA3FE50.taxon	diagnosis	Diagnosis Belongs to the E. humeralis group. In females, the postocellar area seems to be longer (2.0 – 2.5 times as long as diameter of lateral ocellus) than in E. aceroserra and E. humeralis (1.5 – 2.0 times as long). Ventral margin of valvula 3 in lateral view angled as in E. aceroserra, but valvula 3 may be somewhat shorter. The holotype female is slightly paler (mesepisternum slightly pale) than typical E. humeralis (E. aceroserra is darker), but the females from Primorsky Krai are largely pale (black are antenna, lateral mesoscutal lobes and most of abdomen dorsally). The valviceps of males is dorsally convex as in E. humeralis (more or less straight in E. aceroserra), but the apical margin of the paravalva is perpendicular to the valvispina whereas it is strongly inclined in E. humeralis.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF37D8E2970FFC68FCA3FE50.taxon	etymology	Etymology The replacement name telos is the Greek noun τέλος, used in the figurative sense of an ending.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF37D8E2970FFC68FCA3FE50.taxon	materials_examined	Type material examined Holotype Amauronematus terminalis RUSSIA – Kamchatka oblast • ♀; Klutchi [Klyuchi]; 56.32 ° N, 160.85 ° E; R. Malaise leg.; NHRS, NHRS- 000006399.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF37D8E2970FFC68FCA3FE50.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF37D8E2970FFC68FCA3FE50.taxon	description	Genetics COI Based on 3 specimens, maximum within-species distance is 0.15 % and the nearest neighbours, diverging by a minimum of 0.61 %, are Euura aceroserra and E. humeralis. Nuclear Based on 3 specimens, maximum within-species distance is 0.49 % (0.18 % based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.56 %, is Euura humeralis.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF37D8E2970FFC68FCA3FE50.taxon	distribution	Distribution and material examined East Palaearctic. Specimens studied are from Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF28D8E2971CFDE7FCD7F9E4.taxon	diagnosis	Diagnosis Could be confused with almost completely pale specimens of Euura miliaris or members of the E. bergmanni and E. oligospila groups. The rather short valvula 3 is most similar to E. jugicola, E. hypoxantha, and the E. papillosa group. The lancet is most similar to the E. papillosa group (overall shape, serrulae, and radix seems to be about as long as lamnium). Its darker pterostigma and not clearly bifid claws (somewhat similar to E. gregaria) distinguish E. tiliae from the species mentioned above. Without genetic data it is not clear to which Euura group E. tiliae could belong, but there seems to be little doubt that the species belongs to Euura rather than Nematus. Shinohara & Hara (2015) retained it in Nematus. We do not consider the small differences in claws to other Euura to be sufficient to exclude the species from this genus.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF28D8E2971CFDE7FCD7F9E4.taxon	materials_examined	Type material examined Holotype Nematus tiliae JAPAN – Hokkaido • ♀; Akaigawa, Meiji; 43.013 ° N, 140.898 ° E; 11 Sep. 1996; M. Ohara leg.; NSMT, NSMT-HYM 62118.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF28D8E2971CFDE7FCD7F9E4.taxon	biology_ecology	Host plants Tilia maximowicziana Shiras. (Zinovjev 1998).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF28D8E2971CFDE7FCD7F9E4.taxon	description	Genetics COI No data. Nuclear No data.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF28D8E2971CFDE7FCD7F9E4.taxon	distribution	Distribution and material examined East Palaearctic. Only one specimen studied, from Japan.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF28D8E39733F974FBBCFB4A.taxon	diagnosis	Diagnosis The black pterostigma and mesepisternum, yellow costa, mostly black abdomen, reddish head and reddish thorax dorsally, and mostly black femora make the females rather easily recognizable. Penis valves (Xiao 1990) might not be clearly distinguishable from, e. g., the melanocephalus and miliaris groups. Larvae (Wang et al. 2015) are most similar to those of E. miliaris or E. salicis. Phylogenetically (based only on COI,> 1000 bp) appears to be closest to E. salicis and the E. melanocephalus group.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF28D8E39733F974FBBCFB4A.taxon	materials_examined	Type material examined Holotype Pteronidea trochanterata RUSSIA – Primorsky Kray • ♀; Vladivostok, Sedanka; 43.21 ° N, 131.96 ° E; 12 Aug. 1930; R. Malaise leg.; NHRS, NHRS-HEVA 000006438. Notes The holotype is 8.2 mm long, not 9 mm as stated in the original description. Based on the details given in Wang et al. (2015), Nematus hequensis is not different from Pteronidea trochanterata Malaise.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF28D8E39733F974FBBCFB4A.taxon	biology_ecology	Host plants Salix spp. and Populus spp. (Wang et al. 2015).	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF28D8E39733F974FBBCFB4A.taxon	description	Genetics COI Based on 2 specimens (NC _ 072336, identified as Nematus trochanteratus and NC _ 072337 identified as N. hequensis), maximum within-species distance is 0.91 % and the nearest neighbour, diverging by a minimum of 3.96 %, is Euura vicina. Nuclear No data.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF28D8E39733F974FBBCFB4A.taxon	distribution	Distribution and material examined East Palaearctic. Specimens studied are from China (only genetics), Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF29D8E0972DFB0FFCA3FDB6.taxon	description	Fig. 278	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF29D8E0972DFB0FFCA3FDB6.taxon	materials_examined	Type material examined Lectotype Amauronematus variabilis, here designated RUSSIA • ♀; Kamchatka oblast; R. Malaise leg.; NHRS, NHRS-HEVA 000006365. Paralectotype Amauronematus variabilis RUSSIA • ♀; Kamchatka oblast; R. Malaise leg.; NHRS, NHRS-HEVA 000006364. Notes Possibly belongs to the variator group. The lancet is most similar to E. lethe, but the malar space is longer (1.7 – 1.8 times as long as diameter of front ocellus compared to 1.4 – 1.6 in E. lethe). The species was questionably listed for Europe by Zhelochovtsev & Zinovjev (1995), but we exclude it here, because no confirmed specimens are known.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF29D8E0972DFB0FFCA3FDB6.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF29D8E0972DFB0FFCA3FDB6.taxon	description	Genetics COI No data. Nuclear No data.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF29D8E0972DFB0FFCA3FDB6.taxon	distribution	Distribution and material examined East Palaearctic. Specimens studied are from Russia.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF2AD8E094EDFD82FD06FA94.taxon	biology_ecology	Host plants Unknown.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF2AD8E094EDFD82FD06FA94.taxon	description	Genetics COI No data. Nuclear No data.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF2AD8E094EDFD82FD06FA94.taxon	distribution	Distribution and material examined East Palaearctic. No specimens studied.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF2AD8E1973CFA9DFD6EFAE3.taxon	discussion	In accordance with Article 23.9.1 of the International Code of Zoological Nomenclature (ICZN 1999), we retain the junior name umbratus as valid, because it has been used more than 25 times by at least ten authors as the valid name for this taxon during the last 50 years, whereas breviusculus has not been used as valid since 1899. Examples of use of umbratus or umbrata as the valid name for this taxon during the last fifty years: Hellén 1976; Smith 1979; Verzhutskii 1981; Kangas 1985; Viitasaari & Vikberg 1985; Zhelochovtsev 1988; Liston 1995, 1997; Zhelochovtsev & Zinovjev 1995; Taeger et al. 1998, 2006, 2010; Lacourt 1999, 2020; Pschorn-Walcher & Altenhofer 2000; Haris 2001; Liston et al. 2006; Roller & Haris 2008; Schedl 2009; Prous et al. 2014, 2017, 2021; Macek & Kula 2014; Chevin & Savina 2016; Sundukov 2017 b; Macek et al. 2020; Liston et al. 2023	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF2AD8E1973CFA9DFD6EFAE3.taxon	diagnosis	Diagnosis (male) The penis valve of holmgreni figured in the original description (Lindqvist 1968: 195, fig. 11) appears to be taken from an earlier publication under the name Nematus (Pteronidea) sp. (Lindqvist 1967 a: 20, fig. 14), which fits better with the penis valve of Euura pohjola. The actual penis valve of the holmgreni holotype is not different from the penis valve of Nematus umbratus, which indeed is rather similar to that of Euura pohjola. Differences between the penis valves of N. umbratus and E. pohjola are as follows: a Ventroapical lobe of paravalva extending about one third of the length of valvispina so that the apical margin of paravalva appears less oblique or even roughly perpendicular relative to the valvispina b Basal third or half of valvar strut more or less at the ventral margin of paravalva c Dorsobasal part of paravalva narrowing more abruptly ..................................... Nematus umbratus aa Ventroapical lobe of paravalva extending about half of the length of valvispina so that the apical margin of paravalva appears more oblique relative to the valvispina bb Valvar strut distinctly removed from ventral margin of paravalva cc Dorsobasal part of paravalva narrowing more gradually ........................................... Euura pohjola	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF2AD8E1973CFA9DFD6EFAE3.taxon	materials_examined	Type material examined Lectotype Nematus breviusculus, here designated RUSSIA – Tatarstan • Gynandromorph; Kasan Province; 55.8 ° N, 49.1 ° E; 8 Jul.; E. Eversmann leg.; ZIN, DEI-GISHym 30032. Lectotype Nematus umbratus SWEDEN • ♀; Lapponia Media [central Lapland]; 25 Jul.; C. H. Boheman leg.; MZLU, MZLU 2017310. Holotype Pteronidea holmgreni SWEDEN – Torne Lappmark • ♂; Torneträsk; 68.22 ° N, 19.74 ° E; 400 m a. s. l.; R. Malaise leg.; NHRS, NHRS-HEVA 000004010. Notes The paratype female belongs to E. leptostigma.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF2BD8E6971FFA76FB4AFEFD.taxon	materials_examined	Type material examined Lectotype Nematus emarginatus, here designated FRANCE • ♂; southern France; Desbrochers leg.; ZIN, DEI-GISHym 89374. Lectotype Nematus fennicus FINLAND • ♀; Finland; Desbrochers leg.; ZIN, DEI-GISHym 89373. Notes Nematus emarginatus was listed by Taeger et al. (2010) under “ Unplaced Nematinae ”. The synonymy of Nematus fennicus with P. luridiventris proposed by Forsius (1920) is here confirmed.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF2CD8E69721FE7CFADEFC40.taxon	description	Fig. 544	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF2CD8E69721FE7CFADEFC40.taxon	materials_examined	Type material examined Lectotype Nematus biscalis GERMANY – Nordrhein-Westfalen • ♀; Aachen area; 50.77 ° N, 6.09 ° E; A. Förster leg.; ZSM, GBIFGISHym 3698. Lectotype Nematus meridionalis, here designated UNKNOWN COUNTRY • ♂; Pyrenees; ZIN, DEI-GISHym 89376. Notes Examination of the penis valve of the lectotype of meridionalis establishes it as Pristiphora biscalis.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF2CD8E6972DFC08FC01FA7D.taxon	materials_examined	Type material examined Lectotype Nematus mollis GERMANY – Niedersachsen • ♀; Harz; 51.8 ° N, 10.3 ° E; W. Saxesen leg.; ZSM, GBIF-GISHym 3355. Lectotype Pachynematus penegalensis, here designated ITALY – South Tirol • ♀; Penegal bei Bozen, in der Naehe des Gipfels; 46.43 ° N, 11.22 ° E; 1700 m a. s. l.; ZSM, DEI-GISHym 12487. Notes The synonymy proposed by Conde (1934) is here confirmed.	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF2CD8E79704F9FCFB59FECF.taxon	description	Fig. 323	en	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
