identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
03BCA619FFD2D80095ADFD82FB70FA98.text	03BCA619FFD2D80095ADFD82FB70FA98.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Nematinae Thomson 1871	<div><p>Monophyly and delimitation of  Nematinae</p><p>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 &amp; 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 &amp; Nyman 2015; Vilhelmsen 2015; Fig. 1), except perhaps a classification proposal by Wei &amp; 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 &amp; 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 .</p><p>Phylogeny and groups of  Euura</p><p>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-GISHym86097 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 &amp; 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.</p><p>Within-species genetic diversity in  Euura</p><p>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 .</p><p>Mitonuclear discordance</p><p>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 (&gt;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.</p><p>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.</p><p>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).</p><p>Intraindividual mitochondrial variants in  Nematinae</p><p>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 &amp; 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 &amp; 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.</p><p>Possible diploid males and tri- or tetraploid females</p><p>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 &amp; 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 &amp; 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.</p><p>Host plants</p><p>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.</p><p>To identify host plants of swept larvae, we amplified the ITS1-5.8S-ITS2 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.</p><p>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).</p><p>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.</p></div>	https://treatment.plazi.org/id/03BCA619FFD2D80095ADFD82FB70FA98	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFCAD800977DFADFFBABF84B.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura Newman 1837	<div><p>Genus  Euura Newman, 1837</p><p>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.</p><p>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).</p></div>	https://treatment.plazi.org/id/03BCA619FFCAD800977DFADFFBABF84B	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFCBD83195ACFEEEFAFFFCFB.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Nematini Thomson 1871	<div><p>Key to West Palaearctic genera of  Nematini</p><p>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 2A+3A is complete and curved up to 1A (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.</p><p>Females</p><p>1. a Hind basitarsus 2–3 times as wide as width of following tarsomere (Fig. 4) b Claws with large subapical tooth close to outer tooth (Fig. 6) c Clypeus emarginate (Fig. 9) d Abdomen nearly always with reddish band, except for some specimens from Ireland ................ ..................................................... (4 species)  Nematus septentrionalis group (former  Craesus)</p><p>– aa Hind basitarsus 1.0–1.5 times as wide as width of following tarsomere (Fig. 5) bb Claws simple or with distinct subapical tooth (Figs 6–8) cc Clypeus emarginate or truncate (Figs 9–10) dd Abdomen with or without reddish band ...................................................................................... 2</p><p>2. a Abdominal tergum 9 in lateral view usually more than 3 times as long as tergum 8 (Fig. 11) b Valvula 3 very broad at base or throughout in dorsal view, more than 6 times as broad as width of cercus (Fig. 13) c Lancet strongly sclerotized with spine like setae (Fig. 21) d Left and right mandible both tapered regularly towards apex (Fig. 22) e Clypeus emarginate (Fig. 9) f Claws with distinct subapical tooth (Fig. 6) .......................(7 species)  Nematinus Rohwer, 1911</p><p>– aa Combination of characters not as in a–f; abdominal tergum 9 in lateral view usually less than 2 times as long as tergum 8 (Fig. 12); valvula 3 narrow or broad in dorsal view, variously shaped; cerci often relatively broader (Figs 14–20); lancet weakly or strongly sclerotized with or without spine-like setae; left and right mandible both tapered regularly towards apex (Fig. 22) or left mandible markedly constricted near middle (Fig. 23) and right mandible tapered regularly towards apex (Fig. 22); clypeus emarginate (Fig. 9) or truncate (Fig. 10); claws simple or with subapical tooth (6–8) ................................................................................................................... 3</p><p>3. a Valvula 3 with distinct invagination posteriorly or dorsally (Figs 15–17) ................................... 4</p><p>– aa Valvula 3 without distinct invagination posteriorly or dorsally (Figs 14, 18–20) ..................... 10</p><p>4. a Claws with long subapical tooth close to apical one (bifid) (Fig. 6) ............................................ 5</p><p>– aa Claws simple (Fig. 7) or with large or small subapical tooth clearly separated from apical one (Fig. 8) ......................................................................................................................................... 7</p><p>5. a Largely black, pale are at most head ventrally and around eyes, abdomen ventrally and apically, and mesepisternum partly b Valvula 3 with deep invagination (Fig. 16) c In most species, valvula 3 in lateral view angled upwards at about 45° to longitudinal axis of abdomen (Fig. 24) d Setae of lancet absent or weakly developed e Body 3–6 mm ........................................................................................  Euura amentorum group</p><p>– aa–ee Combination of characters not as in a–e; from largely black to nearly completely pale; valvula 3 with shallow or deep invagination, but not angled upwards (Fig. 25); setae of lancet present or absent; body 4–8 mm .................................................................................................. 6</p><p>6. a Medial surface of head near antennal sockets not markedly elevated in lateral view and slightly or not angular below median pit (head of “  Amauronematus ” type) (Fig. 26) b Clypeus often deeply emarginate (Fig. 9) c Tangium of lancet without campaniform sensilla (Fig. 28) ............  Euura Newman, 1837 in part</p><p>– aa Medial surface of head near antennal sockets markedly elevated in lateral view and angular below medial pit (Fig. 27) bb Clypeus usually more or less truncate (Fig. 10) cc Tangium of lancet with campaniform sensilla (Fig. 29) ..........  Pristiphora Latreille, 1810 in part</p><p>7. a Postocellar area more than 3 times as long as diameter of lateral ocellus (Fig. 30) b Clypeus deeply emarginate (Fig. 9) c Head extensively pale (Fig. 30) d Abdomen nearly completely pale e Hind femur and tarsus black ............................  Euura itoi (Okutani, 1955) (central Europe, rare)</p><p>– aa Postocellar area less than 3 (mostly less than 2.5) times as long as diameter of lateral ocellus (Figs 31, 33) bb Clypeus deeply emarginate (Fig. 9) or truncate (Fig. 10) cc Head extensively pale to completely black dd Abdomen pale to black ee Hind femur and tarsus pale to black ............................................................................................ 8</p><p>8. a Clypeus deeply emarginate (Fig. 9) b Hypopygium deeply excised (Fig. 32) c Head extensively pale (Fig. 31) .............................................  Euura imperfecta (Zaddach, 1876)</p><p>– aa–cc Combination of characters not as in a–c; clypeus deeply emarginate (Fig. 9) or truncate (Fig. 10); hypopygium deeply or not deeply excised; head extensively pale to completely black ..... 9</p><p>9. a Clypeus deeply emarginate (Fig. 9) b Body extensively pale c Postocellar area more than 2 times as long as diameter of lateral ocellus d Lancet without setae ......................................................................  Euura epilosa (Lindqvist, 1970) (rare, in Europe so far only known from Bulgaria and Slovakia)</p><p>– aa Clypeus usually more or less truncate (Fig. 10) bb Body black to extensively pale cc Postocellar area often less than 2 times as long as diameter of lateral ocellus (Fig. 33) dd Lancet with or without setae ....................................................  Pristiphora Latreille, 1810 in part</p><p>10.a Transverso-radial (2r-rs) vein usually at least faintly present in forewing (Fig. 34) b Transverso-costal (Sc) vein usually situated beyond or at point of origin of medius (M) from radius (R) (Fig. 34) c Anterior protibial spur without velum, but with hairs (Fig. 35) d Clypeus emarginate e Claws with distinct subapical tooth f Left and right mandible both tapered regularly towards apex (Fig. 22) g Lancet with 11–12 annuli and with thick setae in middle annuli (Fig. 38) .................................... .................................................................................................................  Dineura Dahlbom, 1835</p><p>– aa–gg Combination of characters not as in a–g; transverso-radial (2r-rs) vein rarely present in forewing (aberrant individuals) (Fig. 37); transverso-costal (Sc) vein usually situated before point of origin of medius (M) from radius (R) (Fig. 37); anterior protibial spur usually with velum (Fig. 36); clypeus emarginate or truncate; claws with or without subapical tooth; left mandible markedly constricted near middle (Fig. 23) and right mandible tapered regularly towards apex (Fig. 22) in most species; lancet with 8–30 annuli and with or without setae ............................11</p><p>11.a Claws simple (Fig. 7) or with small subapical tooth (Fig. 8) .................................................... 12</p><p>– aa Claws with large subapical tooth (Fig. 6) .................................................................................. 22</p><p>12.a In dorsal view, valvula 3 broad or narrow, not tapering towards apex, truncate, and with indistinct or distinct invagination (Figs 39–41) ........................................................................................... 7</p><p>– aa In dorsal view, valvula 3 narrow along its entire length and without invagination (Figs 41–43); or tapering from base towards apex and without invagination (Figs 44–46); or broad, tapering towards apex but not from base, without invagination but with distinct carina posteriorly (Figs 49, 53) .............................................................................................................................................. 13</p><p>13.a Flagellum with white band in middle (Fig. 47) b Middle terga of abdomen usually dorsally reddish and laterally whitish (Fig. 47) c Pterostigma black (Fig. 47) d Valvula 3 long and narrow (Fig. 43) e 9.0–11.0 mm ..................................................................................  Euura insignis (Hartig, 1840)</p><p>– aa Flagellum uniformly black to uniformly pale bb Middle terga of abdomen in most species of similar colour as basal terga cc Pterostigma pale to black dd Valvula 3 variable ee 3.0–11.0 mm .............................................................................................................................. 14</p><p>14.a Abdomen with red band, terga 1 and 7–10 black (Fig. 48) b Clypeus truncate c In lateral view, posterior margin of valvula 3 somewhat truncate ................................................. ............................................................................................  Pristiphora erichsonii (Hartig, 1837)</p><p>– aa Abdomen without red band bb Clypeus truncate or emarginate cc In lateral view, posterior margin of valvula 3 truncate or round ............................................... 15</p><p>15. a In dorsal view, head distinctly expanded behind eyes (Fig. 50) b Valvula 3 with indistinct or distinct carina posteriorly (Fig. 49) c Head and thorax black d Lancet without setae e Tangium with campaniform sensilla ............................  Pristiphora dasiphorae (Zinovjev, 1993) (in Europe only known from Öland, Sweden)</p><p>– aa–ee Combination of characters not as in a–e; in dorsal view, head distinctly (Fig. 50) or not distinctly (Fig. 51) expanded behind eyes; valvula 3 with or without carina posteriorly; head and thorax black or pale; lancet with or without setae; tangium with or without campaniform sensilla ....................................................................................................................................... 16</p><p>16.a Labrum asymmetrical with right lobe much longer than left (Fig. 52) b Valvula 3 without distinct posterior carina (Fig. 19) c Head, thorax, and abdomen mostly or nearly completely black d Mesepisternum smooth e Claws without subapical tooth f 3.0– 4.5 mm ............................  Pristiphora retusa (Thomson, 1871),  P. exigua (Lindqvist, 1955)</p><p>– aa Labrum usually symmetrical, or asymmetrical with right lobe slightly longer than left bb Valvula 3 without or with distinct posterior carina cc Head, thorax, and abdomen black to nearly completely pale dd Mesepisternum smooth or matt ee Claws with small subapical tooth in most species ff 3.0–11.0 mm .............................................................................................................................. 17</p><p>17.a Valvula 3 about as long as broad in dorsal view and with distinct posterior carina (Fig. 53) b Head, thorax, and abdomen mostly or nearly completely black .................................................... ............................................  Pristiphora angulata Lindqvist, 1974,  P. abbreviata (Hartig, 1837)</p><p>– aa Valvula 3 with different combination of characters, broad or long, with or without posterior carina bb Head, thorax, and abdomen black to nearly completely pale .................................................... 18</p><p>18.a Head, thorax, and abdomen black b Valvifer 2, tergum 10, and clypeus usually black c Metatarsus usually mostly pale d Valvula 3 distinctly shorter than cerci and distinctly tapering towards apex in dorsal view e Mesepisternum matt f Lancet with campaniform sensilla and setae ............................  Pristiphora mollis (Hartig, 1837)</p><p>– aa–ff Combination of characters not as in a–f; head, thorax, and abdomen black or pale; valvifer 2, tergum 10, and clypeus black or pale; metatarsus black or pale; valvula 3 longer or shorter than cerci, tapering or not tapering towards apex; mesepisternum smooth or matt; lancet with or without campaniform sensilla and setae .................................................................................... 19</p><p>19.a Mesepisternum matt b Clypeus truncate or at most slightly emarginate c Head largely or completely black d Thorax black e Abdomen completely black to extensively pale ventrally, laterally, and apically f Lancet without setae ....................................................................................................................... g Tangium of lancet with campaniform sensilla ........................  Pristiphora carinata group in part</p><p>– aa–gg Combination of characters not as in a–f; mesepisternum smooth in most species; clypeus truncate or emarginate; head, thorax, and abdomen black to nearly completely pale; lancet with or without setae; tangium with or without campaniform sensilla ............................................. 20</p><p>20.a Clypeus truncate b Postocellar area about 2 times as long as diameter of lateral ocellus c Costa (vein C) apically swollen (Fig. 54) d Serrulae flat (Fig. 56) e Tangium of lancet with campaniform sensilla ........................  Pristiphora abietina group in part,  P. wesmaeli (Tischbein, 1853),  P. glauca Benson, 1954,  P. pallida group,  P. tenuiserra (Lindqvist, 1959)</p><p>– aa Clypeus usually distinctly emarginate bb Postocellar area often distinctly more than 2 times as long as diameter of lateral ocellus cc Costa (vein C) apically usually less swollen (Fig. 55) dd Serrulae flat (Fig. 56) or protruding (Fig. 57) ee Tangium of lancet without campaniform sensilla (except  Euura epilosa, but which has a distinctly emarginate clypeus) ................................................................................................................... 21</p><p>21.a Pterostigma black b Body largely black c Lancet without setae d Radix shorter than lamnium e Sutures of lancet indistinctly bending apically f 6.5–7.0 mm ....................................................................  Nematus lonicerae (Weiffenbach, 1957)</p><p>– aa–ff Combination of characters not as in a–f; pterostigma pale in most species; body pale to black; lancet with or without setae; radix shorter, longer than or about as long as lamnium; sutures of lancet not bending apically, or bending indistinctly or distinctly; 3–9 mm .................................. ........................................................................................................  Euura Newman, 1837, in part</p><p>22.a Clypeus more or less truncate b Postocellar area less than 2 times as long as diameter of lateral ocellus c Valvula 3 about as broad as long in dorsal view, somewhat square-shaped, often with invagination posteriorly d Costa (vein C) apically swollen (Fig. 54) e Lancet with setae f Tangium of lancet with campaniform sensilla g 4–7 mm ....................................  Pristiphora depressa group and  P. micronematica group in part</p><p>– aa Clypeus usually distinctly emarginate bb Postocellar area often distinctly more than 2 times as long as diameter of lateral ocellus cc Valvula 3 in most species triangular in dorsal view, usually without invagination posteriorly dd Costa (vein C) apically usually less swollen (Fig. 55) ee Lancet with or without setae ff Tangium of lancet without campaniform sensilla (except  Euura epilosa, but which has distinctly emarginate clypeus) gg 2.5–12.0 mm .............................................................................................................................. 23</p><p>23.a Mesepisternum matt b Terga (1–)2–3(–6), femora, tibiae, and tarsi of fore and middle legs reddish (Fig. 58) c Pterostigma black d Body 7–11 mm, elongate appearance with abdomen tapering almost from base .......................... ....................................................................................................  Nematus lucidus (Panzer, 1801)</p><p>– aa Mesepisternum smooth or matt bb Colouration different cc Pterostigma black or pale dd Body 2.5–12.0 mm, usually not markedly elongate or with abdomen tapering from base ....... 24</p><p>24.a Pronotal angles black (Fig. 59) b Abdomen black with 3rd and 4th segment more or less pale (Fig. 59) c Pterostigma black d Body 8–12 mm ........................................................................  Nematus princeps Zaddach, 1876</p><p>– aa Pronotal angles black or pale bb Abdomen colouration different cc Pterostigma black or pale dd Body 2.5–11.0 mm .................................................................................................................... 25</p><p>25.a Pterostigma black (Fig. 60) b Costa largely (usually?) black c Head black d Abdomen yellow (Fig. 60) e In dorsal view, valvula 3 short and somewhat expanded in middle f Lancet with 13–16(17?) annuli, all with serrulae, and radix shorter than lamnium g Body 5.0– 7.5 mm .................................................................  Nematus umbratus Thomson, 1871</p><p>– aa–gg Combination of characters not as in a–g; pterostigma pale to black; costa pale to black; head nearly completely pale to black; abdomen pale to black; valvula 3 triangular in most species; lancet with 13–30 annuli and radix shorter or longer than lamnium; body 2.5–11.0 mm ......... 26</p><p>26.a Pterostigma black or dark brown b Head, thorax, and abdomen largely black c Valvula 3 narrowed at apex d Radix shorter than lamnium e Setae of lancet absent or short and not reaching serrulae (Fig. 63) f Tips of serrulae blunt (Fig. 63) g Body 5.5–9.5(10.5) mm ......................................................................  Nematus wahlbergi group (including  N. lonicerae) (former  Paranematus)</p><p>– aa–gg Combination of characters not as in a–g; pterostigma pale to black; head, thorax, and abdomen black to pale; valvula 3 narrowed or not narrowed at apex; radix shorter or longer than lamnium; setae of lancet present, long or short and reaching serrulae at least on apical sutures; tips of serrulae blunt or acute; body 2.5–11.0 mm ..........  Euura Newman, 1837, in part (more than 200 species)</p><p>Males</p><p>1. a Hind basitarsus 2–3 times as wide as width of following tarsomere b Claws with distinct subapical tooth (Fig. 6) c Clypeus emarginate (Fig. 9) d Abdomen nearly always with reddish band in Europe .................................................................. ....................................................... (4 species)  Nematus septentrionalis group (former  Craesus)</p><p>– aa Hind basitarsus 1.0–1.5 times as wide as width of following tarsomere bb Claws simple (Fig. 7) or with distinct subapical tooth (Figs 6, 8) cc Clypeus emarginate (Fig. 9) or truncate (Fig. 10) dd Abdomen with or without reddish band ...................................................................................... 2</p><p>2. a Transverso-radial (2r-rs) vein usually at least faintly present in forewing (Fig. 34) b Transverso-costal (Sc) vein usually situated beyond or at point of origin of medius (M) from radius (R) (Fig. 34) c Anterior protibial spur without velum, but with hairs (Fig. 35) d Clypeus emarginate (Fig. 9) e Claws with distinct subapical tooth f Tergum 8 without distinct apical projection g Valvispina straight, not hook-shaped (Fig. 61) h Paravalva apically filament-like (Fig. 61) ..............................................  Dineura Dahlbom, 1835</p><p>– aa–hh Combination of characters not as in a–h; transverso-radial (2r-rs) vein rarely present in forewing (aberrant individuals) (Fig. 37); transverso-costal (Sc) vein usually situated before point of origin of medius (M) from radius (R) (Fig. 37); anterior protibial spur usually with velum (Fig. 36); clypeus emarginate (Fig. 9) or truncate (Fig. 10); claws with or without subapical tooth; tergum 8 with or without distinct apical projection; valvispina variously shaped; paravalva apically not filament-like in most species .................................................................................... 3</p><p>3. a Pseudoceps often with distinct apical filament, sometimes longer than valvispina b Paravalva (often filament-like) distinctly extending apically from base of valvispina, sometimes beyond its tip (Fig. 62) c Clypeus emarginate d Claws with distinct subapical tooth e Tergum 8 with rounded distinct or indistinct apical projection (Fig. 64) ...................................... ...............................................................................................................  Nematinus Rohwer, 1911</p><p>– aa–ee Combination of characters not as in a–e; pseudoceps in vast majority of species apically not filament-like; paravalva extending (Fig. 67) or not extending apically from base of valvispina (Fig. 68), in few species valvispina absent; clypeus truncate or emarginate; claws with or without subapical tooth; tergum 8 with or without apical projection ....................................................... 4</p><p>4. a Claws with large subapical tooth ................................................................................................. 9</p><p>– aa Claws simple or with small subapical tooth ................................................................................ 5</p><p>5. a Flagellomere 1 black and flagellomeres 2–7 more or less pale b Pterostigma black c Tergum 8 with distinct apical projection d 8.0–10.0 mm ..................................................................................  Euura insignis (Hartig, 1840)</p><p>– aa Flagellum uniformly black to uniformly pale bb Pterostigma pale to black cc Tergum 8 with or without distinct apical projection dd 2.0–10.0 mm ................................................................................................................................ 6</p><p>6. a Tergum 8 with distinct apical projection (Fig. 66) b Clypeus usually distinctly emarginate c Costa (vein C) apically usually not distinctly swollen ................................................................ 8</p><p>– aa Tergum 8 without distinct apical projection (Fig. 65) bb Clypeus usually truncate cc Costa (vein C) apically usually distinctly swollen ...................................................................... 7</p><p>7. a Head, thorax, and abdomen mostly black b Costa not distinctly expanded c Penis valve with deep invagination between valvispina and paravalva (Fig. 67) ......................... ......................................................................................................  Euura moerens (Förster, 1854)</p><p>– aa Head, thorax, and abdomen black to extensively pale bb Costa usually distinctly expanded cc Penis valve without or almost without invagination between valvispina and paravalva or valvispina rarely absent ..........................................................  Pristiphora Latreille, 1810, in part</p><p>8. a Pterostigma black b Head, thorax, and abdomen mostly black c Legs extensively whitish d Sternum 9 and tergum 8 including its apical projection black e Apical projection of tergum 8 distinctly constricted at base (Fig. 66) f 5.5–6.0 mm ....................................................................  Nematus lonicerae (Weiffenbach, 1957)</p><p>– aa–ff Combination of characters not as in a–f; pterostigma pale to black; head, thorax, and abdomen black to nearly completely pale; legs black to pale; sternum 9 and tergum 8 including its apical projection black or pale; apical projection of tergum 8 constricted or not constricted at base; 2.0–10.0 mm ..................................................................................  Euura Newman, 1837, in part</p><p>9. a Clypeus truncate b Head, thorax, and abdomen black c Antennae ventrally distinctly paler than dorsally or uniformly yellow and with numerous and clearly visible stout black setae among finer paler ones (Fig. 70) d Apical projection of tergum 8 longer than broad (Fig. 69) e Paravalva strongly reduced (Fig. 71) f Valvispina large and strongly dorsally curved (Fig. 71) ................................................................ ...............................................  Pristiphora armata (Thomson, 1862),  P. leucopus (Hellén, 1948)</p><p>– aa–ff Combination of characters not as in a–f; clypeus truncate or emarginate; head, thorax, and abdomen extensively pale to black; antenna pale to black and with or without clearly visible stout black setae among finer paler ones; apical projection of tergum 8 variously shaped or not clearly developed; paravalva strongly reduced or well developed; valvispina variously shaped or absent in few species ............................................................................................................................. 10</p><p>10.a Pseudoceps with dorsal membranous region covered with setae (Fig. 72) b Valvispina not clearly developed (Fig. 72) c Apical projection of tergum 8 indistinct d Clypeus usually truncate e Head, thorax, and abdomen black ..............................  Pristiphora micronematica group, in part</p><p>– aa Pseudoceps without membranous region covered with setae (Fig. 73) bb Valvispina clearly developed in most species cc Apical projection of tergum 8 distinct or indistinct dd Clypeus truncate or emarginate ee Head, thorax, and abdomen extensively pale to black ...............................................................11</p><p>11.a Valvispina positioned in middle or dorsal third of paravalva (Fig. 73) b Invagination between valvispina and ventral part of paravalva absent (Fig. 73) c Valvispina medium sized, not distinctly expanded at base and straight or directed slightly dorsally (Fig. 73) d Pseudoceps broad at apex (Fig. 73) e Paravalva rectangular or oval-shaped (Fig. 73) f Apical projection of tergum 8 indistinct g Clypeus truncate h Claws not bifid i Head and abdomen ventrally usually pale, sometimes also thorax j Legs usually mostly pale, except hind tarsus and hind tibia and/or femur apically ...................... ................................  Pristiphora pallidiventris (Fallén, 1808) and  P. cadma Wong &amp; Ross, 1960</p><p>– aa–jj Combination of characters not as in a–j; valvispina positioned in most species dorsally or ventrally, absent in a few species; invagination between valvispina and ventral part of paravalva absent or present; valvispina small to large, straight or directed dorsally or ventrally; pseudoceps broad or narrow; paravalva variously shaped; apical projection of tergum 8 distinct or indistinct; clypeus truncate or emarginate; claws bifid or with large subapical tooth; head, thorax, and abdomen extensively pale to black; legs mostly pale to black .................................................. 12</p><p>12.a Valvispina positioned ventrally of paravalva (Fig. 74), if appearing in middle, then bending dorsally together with ventral part of paravalva b Invagination between valvispina and ventral part of paravalva absent (Fig. 74) c Paravalva well developed and pseudoceps broad at apex, or paravalva strongly modified to large dorsally directed valvispina and pseudoceps often narrowing apically (Fig. 74) d Apical projection of tergum 8 indistinct e Clypeus usually truncate f Claws rarely bifid ................................................................................  Pristiphora Latreille, 1810</p><p>– aa–ff Combination of characters not as in a–f; valvispina positioned in middle or dorsally of paravalva (Figs 75–78), absent in a few species; invagination between valvispina and ventral part of paravalva often present; paravalva well developed and valvispina small to large, rarely directed dorsally (Figs 75–78), pseudoceps broad or distinctly narrowing, sometimes forming a filament or spine; apical projection of tergum 8 distinct in most species; clypeus usually emarginate; claws usually bifid ............................................................................................................................... 13</p><p>13.a Mesepisternum matt b Terga (1–)2–3(–6), pronotal angles, femora, tibiae, and tarsi of fore and middle legs reddish c Pterostigma black d Body 7–10 mm, torpedo-shaped e Invagination between valvispina and paravalva wide and deep (Fig. 75) f Pseudoceps apically broad .........................................................  Nematus lucidus (Panzer, 1801)</p><p>– aa–ff Combination of characters not as in a–f; mesepisternum smooth or matt; colouration different in most species; pterostigma black or pale; body 2.0–10.0 mm, usually not torpedo-shaped; invagination between valvispina and paravalva distinct or absent; pseudoceps apically broad or distinctly narrowing ................................................................................................................... 14</p><p>14.a Pronotal angles black b Abdomen black, sometimes with 3rd and 4th segment more or less pale c Hind tibia and tarsus black d Pterostigma black e Body 8–10 mm, torpedo-shaped f Valvispina with distinct ventral hook (Fig. 76) .......................  Nematus princeps Zaddach, 1876</p><p>– aa Pronotal angles black or pale bb Abdomen black to pale cc Hind tibia and tarsus black to pale dd Pterostigma black or pale ee Body 2.0–10.0 mm, not torpedo-shaped ff Valvispina simple, without hook, or absent in few species ....................................................... 15</p><p>15.a Pterostigma black b Costa largely (usually?) black c Head black d Abdomen usually at least ventrally yellow e Ventroapical lobe of paravalva extending about one third of the length of valvispina (Fig. 77) f Basal third or half of valvar strut more or less at the ventral margin of paravalva (Fig. 77) g Dorsobasal part of paravalva narrowing abruptly (Fig. 77) h Body 4.0– 6.5 mm .................................................................  Nematus umbratus Thomson, 1871</p><p>– aa–hh Combination of characters not as in a–h; pterostigma pale to black; costa pale to black; head nearly completely pale to black; abdomen pale to black; ventroapical lobe of paravalva variously shaped, valvispina absent in some species; basal third or half of valvar strut often distinctly removed from ventral margin of paravalva (Fig. 78); dorsobasal part of paravalva narrowing abruptly or gradually; body 2.0–10.0 mm ................................................................................. 16</p><p>16.a Pterostigma black or dark brown b Head, thorax, and abdomen largely black c Legs extensively whitish or reddish d Sternum 9 and tergum 8 black e Penis valve oval-shaped, pseudoceps apically not distinctly narrowed, small invagination between valvispina and paravalva, dorsal and apical margin of pseudoceps strongly and broadly sclerotized (Fig. 78) f Body 5.0– 7.5 mm ...  Nematus wahlbergi group (including  N. lonicerae) (former  Paranematus) (males of the species other than  N. lonicerae are extremely rare in the West Palaearctic)</p><p>– aa–ff Combination of characters not as in a–f; pterostigma pale to black; head, thorax, and abdomen black to pale; legs black to pale; sternum 9 and tergum 8 black or pale; penis valve differently shaped; body 2.0–10.0 mm .....................  Euura Newman, 1837, in part (more than 200 species)</p></div>	https://treatment.plazi.org/id/03BCA619FFCBD83195ACFEEEFAFFFCFB	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFFCD836972EFCF7FB6BFBAA.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura elaeagnos Kopelke 1996	<div><p>005  Euura elaeagnos Kopelke, 1996</p><p>Euura (Euura) elaeagnos Kopelke, 1996: 105–106 .</p><p>Type material examined</p><p>Holotype  Euura (Euura) elaeagnos</p><p>AUSTRIA – Salzburg • ♀; Radstätter Tauern, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=13.51&amp;materialsCitation.latitude=47.3" title="Search Plazi for locations around (long 13.51/lat 47.3)">Untertauern</a>; 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-GISHym3720.</p></div>	https://treatment.plazi.org/id/03BCA619FFFCD836972EFCF7FB6BFBAA	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFFCD836970EF9F3FC76F81F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura gemmafoetidae Kopelke 2001	<div><p>012  Euura gemmafoetidae Kopelke, 2001</p><p>Euura (Gemmura) gemmafoetidae Kopelke, 2001: 211–212 .</p><p>Type material examined</p><p>Holotype  Euura (Gemmura) gemmafoetidae</p><p>AUSTRIA – Salzburg • ♀; Tauernpass, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=13.55&amp;materialsCitation.latitude=47.25" title="Search Plazi for locations around (long 13.55/lat 47.25)">Obertauern</a>; 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-GISHym3712.</p><p>Hosts plants</p><p>Salix foetida Schleich. ex DC.,  S. waldsteiniana Willd. (Kopelke 2003)</p></div>	https://treatment.plazi.org/id/03BCA619FFFCD836970EF9F3FC76F81F	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFFDD8379702FEEEFA8EFD92.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura gemmahelveticae Kopelke 2001	<div><p>013  Euura gemmahelveticae Kopelke, 2001</p><p>Euura (Gemmura) gemmahelveticae Kopelke, 2001: 212–213 .</p><p>Type material examined</p><p>Holotype  Euura (Gemmura) gemmahelveticae</p><p>AUSTRIA – Tirol • ♀; Ötztal, Vent, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=10.89&amp;materialsCitation.latitude=46.85" title="Search Plazi for locations around (long 10.89/lat 46.85)">Rofental</a>; 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-GISHym3717.</p></div>	https://treatment.plazi.org/id/03BCA619FFFDD8379702FEEEFA8EFD92	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFFED8349733FEEEFB33FD92.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura elaeagnocola (Kopelke 1994)	<div><p>031  Euura elaeagnocola (Kopelke, 1994)</p><p>Pontania elaeagnocola Kopelke, 1994: 134–135 .</p><p>Type material examined</p><p>Holotype  Pontania elaeagnocola</p><p>AUSTRIA – Tirol • ♀; Karwendel, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=11.63&amp;materialsCitation.latitude=47.41" title="Search Plazi for locations around (long 11.63/lat 47.41)">Gramai-Alm</a>; 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-GISHym3726.</p></div>	https://treatment.plazi.org/id/03BCA619FFFED8349733FEEEFB33FD92	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFFED8349724FD22FC6EFC5E.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura helveticae (Kopelke 1986)	<div><p>034  Euura helveticae (Kopelke, 1986)</p><p>Pontania helveticae Kopelke, 1986: 58–60 .</p><p>Type material examined</p><p>Holotype  Pontania helveticae</p><p>AUSTRIA – Tirol • ♀; Venter Tal, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=10.92&amp;materialsCitation.latitude=46.86" title="Search Plazi for locations around (long 10.92/lat 46.86)">Gample</a>; 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-GISHym3729.</p></div>	https://treatment.plazi.org/id/03BCA619FFFED8349724FD22FC6EFC5E	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFFED8349752F95DFB5DF845.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura kopelkei (Lacourt 1996)	<div><p>043  Euura kopelkei (Lacourt, 1996)</p><p>Pontania (Phyllocolpa) kopelkei Lacourt, 1996c: 271–272 .</p><p>Type material</p><p>Holotype, not examined.</p><p>FRANCE – Hautes-Alpes • ♀; Saint-Véran, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.92&amp;materialsCitation.latitude=44.67" title="Search Plazi for locations around (long 6.92/lat 44.67)">La Chapelle-de-Clousis [Chapelle Notre Dame de Bon Secours de Clausis]</a>; 44.67° N, 6.92° E; 2450 m a.s.l.; 13 Jul. 1985; J. Lacourt leg.; CTN.</p></div>	https://treatment.plazi.org/id/03BCA619FFFED8349752F95DFB5DF845	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFFFD83594FFFB36FAFFF9C0.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura hubertpschornwalcheri Kopelke 2014	<div><p>053  Euura hubertpschornwalcheri Kopelke, 2014</p><p>Phyllocolpa pschornwalcheri Kopelke, 2007a: 105–106 . Secondary homonym of  Nematus pschornwalcheri Muche, 1972 [ Euura monticola (Thomson, 1871)].</p><p>Euura hubertpschornwalcheri Kopelke, 2014 in Prous et al. 2014: 53. Replacement name for  Phyllocolpa pschornwalcheri .</p><p>Type material examined</p><p>Holotype  Phyllocolpa pschornwalcheri</p><p>AUSTRIA – Salzburg • ♀; Ramsau, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=13.72&amp;materialsCitation.latitude=47.44" title="Search Plazi for locations around (long 13.72/lat 47.44)">Silberklamm</a> [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-GISHym21235.</p></div>	https://treatment.plazi.org/id/03BCA619FFFFD83594FFFB36FAFFF9C0	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFFFD8359723FE37FC94FC8B.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura maroccana (Lacourt 1997)	<div><p>046  Euura maroccana (Lacourt, 1997)</p><p>Pontania (Phyllocolpa) maroccana Lacourt, 1997: 30 . Holotype ♀ (MNHN). Type locality:  Jbel Tidighine, Rif, Morocco. Recorded host:  Salix acuminata Mill.</p><p>Type material examined</p><p>Holotype  Pontania (Phyllocolpa) maroccana</p><p>MOROCCO – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-4.52&amp;materialsCitation.latitude=34.84" title="Search Plazi for locations around (long -4.52/lat 34.84)">Rif</a> • ♀; 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-GISHym31703.</p></div>	https://treatment.plazi.org/id/03BCA619FFFFD8359723FE37FC94FC8B	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFFFD8359714F935FB6AF86B.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura spirappendiculata (Kopelke 2007)	<div><p>055  Euura spirappendiculata (Kopelke, 2007)</p><p>Phyllocolpa spirappendiculata Kopelke, 2007b: 157–159 .</p><p>Type material examined</p><p>Holotype  Phyllocolpa spirappendiculata</p><p>AUSTRIA – Salzburg • ♀; Defereggental, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=12.26&amp;materialsCitation.latitude=46.92" title="Search Plazi for locations around (long 12.26/lat 46.92)">Erlsbach</a>; 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-GISHym21233.</p></div>	https://treatment.plazi.org/id/03BCA619FFFFD8359714F935FB6AF86B	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFF0D83A9756FB42FCCEFA76.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura alpinae (Vikberg 2003)	<div><p>065  Euura alpinae (Vikberg, 2003)</p><p>Eupontania alpinae Vikberg, 2003: 160–161 .</p><p>Type material</p><p>Holotype not examined.</p><p>Material examined</p><p>SLOVAKIA • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=20.23&amp;materialsCitation.latitude=49.24" title="Search Plazi for locations around (long 20.23/lat 49.24)">Belanské Tatry Mountains</a>; 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  .</p></div>	https://treatment.plazi.org/id/03BCA619FFF0D83A9756FB42FCCEFA76	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFF0D83A9734FEEEFB75FDB1.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura spirhelvetica (Kopelke 2007)	<div><p>056  Euura spirhelvetica (Kopelke, 2007)</p><p>Phyllocolpa spirhelvetica Kopelke, 2007b: 160–161 . Holotype ♀ (SMH). Type locality:  Grimselpass, Valais, Switzerland. Recorded host:  Salix helvetica Vill.</p><p>Type material examined</p><p>Holotype  Phyllocolpa spirhelvetica</p><p>SWITZERLAND – Valais • ♀; Grimselpass, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=8.3&amp;materialsCitation.latitude=46.57" title="Search Plazi for locations around (long 8.3/lat 46.57)">Grimselsee</a>; 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-GISHym21234.</p></div>	https://treatment.plazi.org/id/03BCA619FFF0D83A9734FEEEFB75FDB1	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFF0D83B9733F8AFFB7FFE1C.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura breviserratae (Kopelke 1989)	<div><p>070  Euura breviserratae (Kopelke, 1989)</p><p>Pontania breviserratae Kopelke, 1989: 67–69 .</p><p>Type material examined</p><p>Holotype  Pontania breviserratae</p><p>SWITZERLAND – Valais • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=7.96&amp;materialsCitation.latitude=46.06" title="Search Plazi for locations around (long 7.96/lat 46.06)">Saas Almagell</a>; 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-GISHym3725.</p></div>	https://treatment.plazi.org/id/03BCA619FFF0D83B9733F8AFFB7FFE1C	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFF1D83B9724FE5CFBC2FD23.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura collactanea (Forster 1854)	<div><p>071  Euura collactanea (Förster, 1854)</p><p>Nematus rubidicornis André, 1880a: 145–146 . Lectotype designated below. Syn. nov.</p><p>Type material examined</p><p>Lectotype  Nematus rubidicornis, here designated</p><p>SWITZERLAND • ♀; Jura Mts; Desbrochers leg.; ZIN, DEI-GISHym89377.</p></div>	https://treatment.plazi.org/id/03BCA619FFF1D83B9724FE5CFBC2FD23	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFF1D83B9750FCD1FD68FB31.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura foetidae (Kopelke 1989)	<div><p>073  Euura foetidae (Kopelke, 1989)</p><p>Pontania foetidae Kopelke, 1989: 54–58 .</p><p>Type material examined</p><p>Holotype  Pontania foetidae</p><p>AUSTRIA – Tirol • ♀; Zillertal, Hintertux, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=11.65&amp;materialsCitation.latitude=47.1" title="Search Plazi for locations around (long 11.65/lat 47.1)">Weitental</a>; 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-GISHym3727.</p><p>Hosts plants</p><p>Salix foetida,  S. waldsteiniana (Kopelke 2003)</p></div>	https://treatment.plazi.org/id/03BCA619FFF1D83B9750FCD1FD68FB31	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFF1D83B9736FB38FD60F921.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura foetidatumida Kopelke 2014	<div><p>074  Euura foetidatumida Kopelke, 2014</p><p>Pontania montivaga Kopelke, 1991: 115–116 . Secondary homonym of  Pachynematus montivagus Marlatt, 1896 [ Euura montivaga (Marlatt, 1896)].</p><p>Euura foetidatumida Kopelke, 2014 in Prous et al. 2014: 53. Replacement name for  Pontania montivaga .</p><p>Type material examined</p><p>Holotype  Pontania montivaga</p><p>AUSTRIA – Tirol • ♀; Zillertal, Hintertux, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=11.65&amp;materialsCitation.latitude=47.1" title="Search Plazi for locations around (long 11.65/lat 47.1)">Weitental</a>; 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-GISHym3732.</p><p>Hosts plants</p><p>Salix foetida,  S. waldsteiniana (Kopelke 2003) .</p></div>	https://treatment.plazi.org/id/03BCA619FFF1D83B9736FB38FD60F921	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFF2D8389729FEEEFB64FD92.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura maculosa (Kopelke 1989)	<div><p>079  Euura maculosa (Kopelke, 1989)</p><p>Pontania maculosa Kopelke, 1989: 58–61 .</p><p>Type material examined</p><p>Holotype  Pontania maculosa</p><p>AUSTRIA – Tirol • ♀; Ötztal, Venter Tal, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=10.93&amp;materialsCitation.latitude=46.84" title="Search Plazi for locations around (long 10.93/lat 46.84)">Am Spiegel</a>; 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-GISHym3731.</p></div>	https://treatment.plazi.org/id/03BCA619FFF2D8389729FEEEFB64FD92	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFF2D838973FFCE1FD30FB01.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura pedicellatae (Lacourt 1997)	<div><p>083  Euura pedicellatae (Lacourt, 1997)</p><p>Pontania (Phyllocolpa) pedicellatae Lacourt, 1997: 31 .</p><p>Type material examined</p><p>Holotype  Pontania (Phyllocolpa) pedicellatae</p><p>Morocco –  High Atlas • ♀; Talat n’Nos; 1150 m a.s.l.; 2 Mar. 1973; J. Lacourt leg.; on  Salix pedicellata Desf.; CTN, GBIF-GISHym31702.</p><p>Hosts plants</p><p>Salix pedicellata Desf. (Liston et al. 2017) .</p></div>	https://treatment.plazi.org/id/03BCA619FFF2D838973FFCE1FD30FB01	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFF2D838975AFA93FDB9F8CA.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura retusae (Benson 1960)	<div><p>087  Euura retusae (Benson, 1960)</p><p>Pontania retusae Benson, 1960: 180–181 .</p><p>Type material</p><p>Syntypes (BMNH), not examined.</p><p>Material examined</p><p>SWITZERLAND – Valais • 2 ♀♀; Lac Vaux near Verbier, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=7.23&amp;materialsCitation.latitude=46.01" title="Search Plazi for locations around (long 7.23/lat 46.01)">Mt Rogneux</a>; 46.01° N, 7.23° E; 2740 m a.s.l.; 27 Jun. 1959; R.B. Benson leg.; BMNH  .</p><p>Hosts plants</p><p>Salix retusa L. (Kopelke 2003).</p></div>	https://treatment.plazi.org/id/03BCA619FFF2D838975AFA93FDB9F8CA	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFF3D839977CFCF1FE80FB0E.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura bergmanni (Dahlbom 1835)	<div><p>092  Euura bergmanni group</p><p>The species group was revised by Prous et al. (2021): see there for details of type material, synonymy, host plants, distribution, and identification characters.</p><p>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).</p></div>	https://treatment.plazi.org/id/03BCA619FFF3D839977CFCF1FE80FB0E	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFF3D839973AFB49FDD9F9FE.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura bergmanni (Dahlbom 1835)	<div><p>093  Euura bergmanni (Dahlbom, 1835)</p><p>Figs 89, 324</p><p>Nematus macrocerus Hartig, 1840: 25 . Syntypes, sex not stated. Lectotype designated below. Syn. nov.</p><p>Type material examined</p><p>Lectotype  Nematus macrocerus, here designated</p><p>GERMANY • ♀;  northern Germany [according to Hartig 1840: 22]; ZSM, DEI-GISHym3343.</p><p>Notes</p><p>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-GISHym3343 establishes it as  Euura bergmanni .</p></div>	https://treatment.plazi.org/id/03BCA619FFF3D839973AFB49FDD9F9FE	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFF3D8399727FE8AFC2BFD66.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura viminalis (Linnaeus 1758)	<div><p>091  Euura viminalis (Linnaeus, 1758)</p><p>Figs 186, 415</p><p>Nematus nigritarsis André, 1880a: 151 . Lectotype designated below.</p><p>Type material examined</p><p>Lectotype  Nematus nigritarsis, here designated</p><p>FRANCE • ♀;  South of France; Desbrochers leg.; ZIN, DEI-GISHym89372.</p><p>Notes</p><p>The synonymy with  viminalis by Konow (1905b) is confirmed.</p></div>	https://treatment.plazi.org/id/03BCA619FFF3D8399727FE8AFC2BFD66	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFF4D83E975FFD7DFC99FB45.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura bergmanni (Dahlbom 1835)	<div><p>101  Euura bergmanni group sp. 1</p><p>Fig. 334</p><p>Notes</p><p>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 .</p><p>Genetics</p><p>COI</p><p>Only one sequence available. The nearest neighbour, diverging by a minimum of 0.61%, is  Euura viridis .</p><p>Nuclear</p><p>Only one sequence available. The nearest neighbour, diverging by a minimum of 0.5%, is  Euura viridis .</p><p>Distribution and material examined</p><p>Palaearctic. The studied specimen is from Finland.</p></div>	https://treatment.plazi.org/id/03BCA619FFF4D83E975FFD7DFC99FB45	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFF4D83F976DFB14FC86FECF.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura bipartita (Serville 1823)	<div><p>102  Euura bipartita group</p><p>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.</p></div>	https://treatment.plazi.org/id/03BCA619FFF4D83F976DFB14FC86FECF	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFF5D83F9720FE8BFD76F917.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura acuminalis (Vikberg 1982)	<div><p>103  Euura acuminalis (Vikberg, 1982)</p><p>Fig. 335</p><p>Pteronidea acuminata Lindqvist, 1968: 194–195 . Secondary homonym of  E. acuminata Enslin, 1915 [ E. purpureae (Cameron, 1884)].</p><p>Nematus acuminalis Vikberg, 1982 . Replacement name for  P. acuminata .</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Holotype  Pteronidea acuminata</p><p>SWEDEN – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=19.74&amp;materialsCitation.latitude=68.22" title="Search Plazi for locations around (long 19.74/lat 68.22)">Torne Lappmark</a> • ♂; Torneträsk; 68.22° N, 19.74° E; 400 m a.s.l.; R. Malaise leg.; NHRS, NHRS-HEVA000003990.</p><p>Paratype  Pteronidea acuminata</p><p>SWEDEN – Torne Lappmark • 1 ♀; same data as for holotype; NHRS, NHRS-HEVA000003991 .</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>No data.</p><p>Nuclear No data.</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FFF5D83F9720FE8BFD76F917	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFF5D83D972EF922FB8DFED9.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura albipennis (Hartig 1837)	<div><p>104  Euura albipennis (Hartig, 1837)</p><p>Figs 97, 336</p><p>Nematus albipennis Hartig, 1837: 196 . Lectotype designated below.</p><p>Nematus vernalis Hartig, 1840: 23 . Lectotype designated by Haris (1997). Synonymy by Haris (1997).</p><p>Nematus obscuratus Zaddach, 1883 in Brischke 1883: 195. Syntypes ♀ ♂, probably destroyed (Blank &amp; Taeger 1998), except perhaps for “Ein ♂ aus Schweden von Dahlbom im Berliner Museum” (ZMHB), not examined. Type localities: East Prussia, Hungary and Sweden. Synonymy by (Konow 1904a).</p><p>Pachynematus legirupus Konow, 1903a: 381–382 (key). Neotype ♀, designated by Liston et al. (2006). Synonymy by Liston et al. (2006).</p><p>Pachynematus sannio Konow, 1903a: 382 (key). Lectotype designated below. Synonymy by Lindqvist (1961c).</p><p>Diagnosis</p><p>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.</p><p>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.</p><p>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.</p><p>Type material examined</p><p>Lectotype  Nematus albipennis, here designated</p><p>GERMANY [according to the title of Hartig 1837] • ♂; ZMHUB, GBIF-GISHym2773.</p><p>Lectotype  Nematus vernalis</p><p>GERMANY • ♀;  northern Germany [according to Hartig 1840: 22]; ZSM, DEI-GISHym3455.</p><p>Neotype  Pachynematus legirupus</p><p>GERMANY – Mecklenburg-Vorpommern • ♀; Hiddensee, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=13.09&amp;materialsCitation.latitude=54.54" title="Search Plazi for locations around (long 13.09/lat 54.54)">NSG Schwedenhau</a>; 54.54° N, 13.09° E; SDEI, GBIF-GISHym4695.</p><p>Lectotype  Pachynematus sannio, here designated</p><p>RUSSIA – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=104.24&amp;materialsCitation.latitude=52.29" title="Search Plazi for locations around (long 104.24/lat 52.29)">Irkutskaja oblast</a> • ♀; Irkutsk; 52.29° N, 104.24° E; SDEI, GBIF-GISHym3871.</p><p>Paralectotype  Pachynematus sannio</p><p>RUSSIA – Irkutskaja oblast • 1 ♂; same data as for lectotype; SDEI, GBIF-GISHym3870 .</p><p>Host plants</p><p>Persicaria maculosa Gray (Stein 1885; Macek et al. 2020). Two generations in central Europe (Stein 1885).</p><p>Genetics</p><p>COI</p><p>Only one sequence available. The nearest neighbour, diverging by a minimum of 1.67%, is  Euura monticola .</p><p>Nuclear</p><p>Only one sequence available. The nearest neighbour, diverging by a minimum of 1.18%, is  Euura fuscomaculata .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Germany, and Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FFF5D83D972EF922FB8DFED9	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFF7D8229737FE90FD0AFD27.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura annulata (Gimmerthal 1834) Prep.	<div><p>105  Euura annulata (Gimmerthal, 1834)</p><p>Figs 103, 337</p><p>Nematus annulatus Gimmerthal, 1834: 123–124 . Syntype ♂ (specimen deposition unknown). Type locality: Estonia or Latvia.</p><p>Nematus (Nematus) xanthopterus Dahlbom, 1835b: 8 . Replacement name for  Tenthredo rumicis Linnaeus, 1758 sensu Fallén, 1808 .</p><p>Nematus flavipennis Cameron, 1876a: 189 . Syntype ♀ (BMNH?), not examined. Type locality: United Kingdom, Scotland, Rannoch and Kingussie. Synonymy by Brischke (1883).</p><p>Nematus leucocarpus André, 1880a: 145 . Lectotype designated below. Primary homonym of  Nematus leucocarpus Hartig, 1840 . Syn. nov.</p><p>Nematus valesiacus W.F. Kirby, 1882: 394 . Replacement name for  Nematus leucocarpus André, 1880 .</p><p>Pachynematus lacteipennis Benson, 1963: 162–164 . Synonymy by Taeger &amp; Blank (1998).</p><p>Commonly used names have been  Pachynematus rumicis (Benson 1958a) and  Nematus rumicis (Zhelohovcev &amp; Zinovjev 1988) .</p><p>Diagnosis</p><p>Female</p><p>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.</p><p>Male (differences from female)</p><p>Extensively to mostly pale.</p><p>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).</p><p>Type material examined</p><p>Lectotype  Nematus leucocarpus, here designated</p><p>SWITZERLAND • ♀; Alpes du Valais; Desbrochers leg.; ZIN, DEI-GISHym89375.</p><p>Holotype  Pachynematus lacteipennis</p><p>AUSTRIA – Lower Austria • ♀; Semmeringgebiet, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=15.74&amp;materialsCitation.latitude=47.7" title="Search Plazi for locations around (long 15.74/lat 47.7)">Raxalp</a>; 47.70° N, 15.74° E; 1830 m a.s.l.; 3 Jun. 1957; R.B. Benson leg.; BMNH, B.M.TYPEHYM.1.789.</p><p>Host plants</p><p>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]).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>Based on 2 specimens, maximum within-species distance is 0.61%. The nearest neighbour, diverging by a minimum of 0.5%, is  Euura gehrsi .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Austria, Finland, Germany, Iceland, Norway, Sweden, Switzerland, and the United Kingdom.</p></div>	https://treatment.plazi.org/id/03BCA619FFF7D8229737FE90FD0AFD27	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFE8D8209753FD34FE47FC84.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura bipartita (Serville 1823)	<div><p>106  Euura bipartita (Serville, 1823)</p><p>Figs 98–100, 341–343</p><p>Nematus bipartitus Serville, 1823: 71 . Lectotype ♂ (MRSN), designated by Blank &amp; Taeger (1998), not examined. Type locality: France, Paris.</p><p>Nematus aurantiacus Hartig, 1837: 197–198 . Lectotype designated below. Synonymy by Konow (1901b).</p><p>Nematus confusus Förster, 1854a: 280–282 . Lectotype designated below. Synonymy by Konow (1902b).</p><p>Nematus xanthogaster Förster, 1854a: 315–316 . Lectotype designated below. Synonymy by Konow (1902b).</p><p>Nematus ochropus Thomson, 1863: 617 . Synonymy by Konow (1901b).</p><p>Pachynematus albipennis var. salicicola Enslin, 1916a: 464 . Lectotype designated by Blank et al. (2009). Synonymy by Blank et al. (2009).</p><p>Pteronidea fulviventris Lindqvist, 1958: 107 . Syn. nov.</p><p>Pteronidea stramineipes Lindqvist, 1958: 111 . Syn. nov.</p><p>Pteronidea rutilipes Lindqvist, 1959c: 59–60 . Syn. nov.</p><p>Diagnosis</p><p>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 .</p><p>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.</p><p>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.</p><p>Type material examined</p><p>Lectotype  Nematus aurantiacus, here designated</p><p>GERMANY • ♀; ZSM, GBIF-GISHym3087.</p><p>Paralectotype  Nematus aurantiacus</p><p>GERMANY • 1 ♀; ZSM, GBIF-GISHym3206 .</p><p>Lectotype  Nematus confusus, here designated</p><p>GERMANY – Nordrhein-Westfalen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.09&amp;materialsCitation.latitude=50.77" title="Search Plazi for locations around (long 6.09/lat 50.77)">Aachen area</a>; 50.77° N, 6.09° E; A. Förster leg.; ZSM, GBIFGISHym3229.</p><p>Lectotype  Nematus xanthogaster, here designated</p><p>GERMANY – Nordrhein-Westfalen • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.09&amp;materialsCitation.latitude=50.77" title="Search Plazi for locations around (long 6.09/lat 50.77)">Aachen area</a>; 50.77° N, 6.09° E; A. Förster leg.; ZSM, GBIFGISHym3459.</p><p>Holotype  Nematus ochropus</p><p>SWEDEN • ♀; Dalarna; NHRS, NHRS-HEVA000003994.</p><p>Lectotype  Pachynematus albipennis var. salicicola</p><p>GERMANY – Brandenburg • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=14.06&amp;materialsCitation.latitude=52.37" title="Search Plazi for locations around (long 14.06/lat 52.37)">Fürstenwalde</a>; 52.37° N, 14.06° E; 1–31 May 1912; S. Soldanski leg.; SDEI, DEI-GISHym5034.</p><p>Holotype  Pteronidea fulviventris</p><p>FINLAND – Kainuu • ♀; Suomussalmi, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=29.35&amp;materialsCitation.latitude=65.15" title="Search Plazi for locations around (long 29.35/lat 65.15)">Ruhtinansalmi</a>; 65.15° N, 29.35° E; 21 Jul. 1917; O. Sorsakoski leg.; ZMUT, http://mus.utu.fi/ZMUT.TYPE765.</p><p>Note</p><p>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.</p><p>Holotype  Pteronidea stramineipes</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=20.81&amp;materialsCitation.latitude=69.04" title="Search Plazi for locations around (long 20.81/lat 69.04)">Lapin Lääni</a> • ♀; Kilpisjärvi; 69.04° N, 20.81° E; 7 Jul. 1953; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.3511.</p><p>Note</p><p>The best morphological match is ZMUO.041906.</p><p>Holotype  Pteronidea rutilipes</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=20.81&amp;materialsCitation.latitude=69.04" title="Search Plazi for locations around (long 20.81/lat 69.04)">Lapin Lääni</a> • ♀; Kilpisjärvi; 69.04° N, 20.81° E; 12 Jul. 1950; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.3590.</p><p>Note</p><p>The best morphological match is ZMUO.041906.</p><p>Hosts plants</p><p>Salix spp.; according to Enslin (1911b) also  Populus .</p><p>Genetics</p><p>COI</p><p>Based on 10 specimens, maximum within-species distance is 3.5% and the nearest neighbour, diverging by a minimum of 0%, is  Euura monticola .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Belgium, Bulgaria, Czech Republic, Estonia, Finland, France, Germany, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FFE8D8209753FD34FE47FC84	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFEAD82194CFFCD3FD79FED8.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura caucasica (Liston, Taeger & Blank 2009)	<div><p>107  Euura caucasica (Liston, Taeger &amp; Blank, 2009)</p><p>Figs 108, 346</p><p>Pachynematus alticola Muche, 1973a: 221–223 . Primary junior homonym of  Pachynematus alticola Enslin, 1916 [ Pristiphora carinata (Hartig, 1837)].</p><p>Pachynematus caucasicus Liston, Taeger &amp; Blank, 2009 in Blank et al. 2009: 45. Replacement name for  P. alticola .</p><p>Diagnosis</p><p>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 .</p><p>Type material examined</p><p>Holotype  Pachynematus alticola</p><p>RUSSIA – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=42.53&amp;materialsCitation.latitude=43.26" title="Search Plazi for locations around (long 42.53/lat 43.26)">Elbrus Region</a> • ♀; Terskol, Südosthang; 43.26° N, 42.53° E; 2500–2800 m a.s.l.; 8 Jul. 1971; W.H. Muche leg.; ZMHB, DEI-GISHym81560.</p><p>Paratype  Pachynematus alticola</p><p>RUSSIA – Elbrus Region • 1 ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=42.54&amp;materialsCitation.latitude=43.25" title="Search Plazi for locations around (long 42.54/lat 43.25)">Itkol</a>; 43.25° N, 42.54° E; 2100–2300 m a.s.l.; 27 Jun.–6 Jul. 1967; W.H. Muche leg.; ZMHB, DEI-GISHym12542  .</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>No data.</p><p>Nuclear No data.</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FFEAD82194CFFCD3FD79FED8	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFEBD8269725FE9FFEBDFC43.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura connecta (Lindqvist 1958) ZMUO.	<div><p>108  Euura connecta (Lindqvist, 1958)</p><p>Figs 109, 350</p><p>Pteronidea connecta Lindqvist, 1958: 95–96 .</p><p>Pteronidea nitida Lindqvist, 1969: 245–246 . Syn. nov.</p><p>Pteronidea polita Lindqvist, 1974a: 119 . Secondary homonym of  Nematus politus Zaddach, 1883 [ Euura polita (Zaddach, 1883)] Syn. nov.</p><p>Nematus glaber Vikberg, 1982 . Replacement name for  Pteronidea polita Lindqvist, 1974 .</p><p>Diagnosis</p><p>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).</p><p>Female</p><p>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.</p><p>Type material examined</p><p>Holotype  Pteronidea connecta</p><p>SWITZERLAND – Valais • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=10.1&amp;materialsCitation.latitude=46.7" title="Search Plazi for locations around (long 10.1/lat 46.7)">Zernez</a>; 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.</p><p>Notes</p><p>19 serrulae; 7.3 mm. Best morphological match, but smaller: DEI-GISHym83923 (17–18 serrulae; 6.2 mm).</p><p>Holotype  Pteronidea nitida</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=27.55&amp;materialsCitation.latitude=68.65" title="Search Plazi for locations around (long 27.55/lat 68.65)">Inari</a> • ♀; Ivalo; 68.65° N, 27.55° E; V. Karvonen leg.; 4 Jul. 1965; MZH, http://id.luomus. fi/GL.9218.</p><p>Notes</p><p>17 serrulae; 6.5 mm. Best morphological match: DEI-GISHym83923.</p><p>Holotype  Pteronidea polita</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=24.52&amp;materialsCitation.latitude=60.29" title="Search Plazi for locations around (long 24.52/lat 60.29)">Vihti</a> • ♀; Siikajärvi; 60.29° N, 24.52° E; V. Karvonen leg.; 10 Jun. 1973; MZH, http://id.luomus.fi/GL.3513.</p><p>Notes</p><p>Best morphological match: DEI-GISHym4985.</p><p>Hosts plants</p><p>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.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Estonia, Finland, Germany, Switzerland, and the United Kingdom.</p></div>	https://treatment.plazi.org/id/03BCA619FFEBD8269725FE9FFEBDFC43	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFECD8279752FC17FBEEFCD8.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura declinata (Forster 1854) OR.	<div><p>109  Euura declinata (Förster, 1854)</p><p>Figs 115, 366, 367</p><p>Nematus declinatus Förster, 1854a: 348–349 . Lectotype designated by Haris (1997).</p><p>Pteronus capito Konow, 1903b: 307 (key). Lectotype designated by Enslin (1916a).</p><p>Diagnosis</p><p>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.</p><p>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).</p><p>Type material examined</p><p>Lectotype  Nematus declinatus</p><p>GERMANY – Nordrhein-Westfalen • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.09&amp;materialsCitation.latitude=50.77" title="Search Plazi for locations around (long 6.09/lat 50.77)">Aachen area</a>; 50.77° N, 6.09° E; A. Förster leg.; ZSM, GBIFGISHym3260.</p><p>Lectotype  Pteronus capito</p><p>GERMANY – Sachsen • ♀; SDEI, GBIF-GISHym3878.</p><p>Notes</p><p>The synonymy of  Pteronus capito with  Nematus declinatus Förster by Taeger &amp; 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 &amp; Burger, 2009). Genitalia of the type specimen are unfortunately lost (Liston &amp; Burger 2009), but the drawing by Conde (who studied the type specimen) in an unpublished manuscript on  Nematinae fits best with the specimen DEI-GISHym17598 (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 .</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>Only one sequence available, a female with haplotypes diverging by 0%. The nearest neighbour, diverging by a minimum of 0.89%, is  Euura excisa .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Czech Republic, France, and Germany.</p></div>	https://treatment.plazi.org/id/03BCA619FFECD8279752FC17FBEEFCD8	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFEDD8249756FC90FAB9FE5D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura excisa (Thomson 1863)	<div><p>110  Euura excisa (Thomson, 1863)</p><p>Fig. 116</p><p>Nematus excisus Thomson, 1863: 628 . Lectotype designated below.</p><p>Lygaeonematus strandi Konow, 1901a: 92 . Lectotype designated below. Synonymy by Lindqvist (1952).</p><p>Diagnosis</p><p>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.</p><p>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.</p><p>Male unknown, but penis valve could be similar to the closely related  E. declinata and  E. scotonota .</p><p>Type material examined</p><p>Lectotype  Nematus excisus, here designated</p><p>SWEDEN • ♀; Norlandia [Lapland, probably Sweden]; C.H. Boheman leg.; MZLU, MZLU2017274.</p><p>Lectotype  Lygaeonematus strandi, here designated</p><p>NORWAY – Nordland • ♀; Hadsel; 68.5° N, 15.0° E; E. Strand leg.; SDEI, GBIF-GISHym3880.</p><p>Host plants</p><p>Bistorta vivipara (L.) Delarbre.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Holarctic. Specimens studied are from Finland, Greenland (only genetics), Norway, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FFEDD8249756FC90FAB9FE5D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFEED82594E6FE1CFBD7FBF6.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura fuscarima (Benson 1933) Prous & Liston & Monckton & Kramp & Vårdal & Vikberg & Heibo & Mutanen 2025	<div><p>111  Euura fuscarima (Benson, 1933) comb. nov.</p><p>Figs 123–124, 349</p><p>Pteronidea fuscarima Benson, 1933: 258–259 .</p><p>Pteronidea striatipleuris Lindqvist, 1958: 106–107 . Syn. nov.</p><p>Pteronidea epimeris Lindqvist, 1969: 241 . Syn. nov.</p><p>Pteronidea peltoneni Lindqvist, 1969: 239–241 . Syn. nov.</p><p>Diagnosis</p><p>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.</p><p>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).</p><p>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 .</p><p>Type material examined</p><p>Holotype  Pteronidea fuscarima</p><p>IRELAND – Wicklow • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-6.15&amp;materialsCitation.latitude=53.02" title="Search Plazi for locations around (long -6.15/lat 53.02)">Devil’s Glen</a>; 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.</p><p>Holotype  Pteronidea striatipleuris</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=20.81&amp;materialsCitation.latitude=69.04" title="Search Plazi for locations around (long 20.81/lat 69.04)">Lapin Lääni</a> • ♀; Kilpisjärvi; 69.04° N, 20.81° E; 6 Jul. 1953; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.3551.</p><p>Notes</p><p>18 serrulae. Best morphological match: ZMUO.035621 (17–18 serrulae).</p><p>Holotype  Pteronidea epimeris</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=20.81&amp;materialsCitation.latitude=69.04" title="Search Plazi for locations around (long 20.81/lat 69.04)">Lapin Lääni</a> • ♀; Kilpisjärvi; 69.04° N, 20.81° E; 7 Jul. 1966; V. Karvonen leg.; MZH, http://id.luomus.fi/GL.3494.</p><p>Notes</p><p>17 serrulae.</p><p>Holotype  Pteronidea peltoneni</p><p>FINLAND – Uusimaa • ♀; Helsinki, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=25.04&amp;materialsCitation.latitude=60.2" title="Search Plazi for locations around (long 25.04/lat 60.2)">Herttoniemi</a>; 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.</p><p>Host plants</p><p>Salix spp. Two generations (Benson 1933).</p><p>Genetics</p><p>COI</p><p>Based on 5 specimens, maximum within-species distance is 4.43% and the nearest neighbour, diverging by a minimum of 0%, is  Euura polaris .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Austria, Finland, Ireland, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FFEED82594E6FE1CFBD7FBF6	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFEFD82A94CBFB41FC11FC71.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura fuscodorsata (Lindqvist 1949) Prous & Liston & Monckton & Kramp & Vårdal & Vikberg & Heibo & Mutanen 2025	<div><p>112  Euura fuscodorsata (Lindqvist, 1949) comb. nov.</p><p>Figs 118, 362</p><p>Pteronidea fuscodorsata Lindqvist, 1949: 73–74 .</p><p>Pachynematus albiventris Lindqvist, 1959b: 70 . Syn. nov.</p><p>Diagnosis</p><p>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 .</p><p>Type material examined</p><p>Holotype  Pteronidea fuscodorsata</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=27.55&amp;materialsCitation.latitude=68.65" title="Search Plazi for locations around (long 27.55/lat 68.65)">Inari</a> • ♀; Ivalo; 68.65° N, 27.55° E; H. Lindberg leg.; 29 May 1929; MZH, http://id.luomus.fi/GL.3542.</p><p>Notes</p><p>15 serrulae?</p><p>Holotype  Pachynematus albiventris</p><p>NORWAY – Finnmark • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=28.17&amp;materialsCitation.latitude=70.2" title="Search Plazi for locations around (long 28.17/lat 70.2)">Tana Bru</a>; 70.20° N, 28.17° E; H. Andersson leg.; 8 Jul. 1956; MZLU, MZLU-HYM0031489.</p><p>Notes</p><p>12–13 serrulae.</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, and Norway.</p></div>	https://treatment.plazi.org/id/03BCA619FFEFD82A94CBFB41FC11FC71	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFE0D8289733FBF9FEABFEFC.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura fuscomaculata (Forster 1854) ZMUO.	<div><p>113  Euura fuscomaculata (Förster, 1854)</p><p>Figs 126, 347, 348</p><p>Nematus fuscomaculatus Förster, 1854a: 291–292 . Lectotype designated below.</p><p>Nematus strongylogaster Cameron, 1878: 42–43 . Syntypes ♀♀ (BMNH?), not examined. Type locality: United Kingdom, Scotland, Kilsyth Glen and Cannisburn. Synonymy by Konow (1903c).</p><p>Pteronus dossuarius Konow, 1904a: 262 . Lectotype designated below. Synonymy by Lindqvist (1944b).</p><p>Nematus (Pteronidea) carelicus Hellén, 1948: 114–115 . Syn. nov.</p><p>Pteronidea winteri Lindqvist, 1958: 114–115 . Syn. nov.</p><p>Diagnosis</p><p>Based on its COI barcode sequence(closest to  E. fuscomaculata ZMUO. 040288and DEI-GISHym31250) and morphology of the holotype of  winteri, we have synonymized it with  E. fuscomaculata . The holotype of  carelicus is almost destroyed, but Viitasaari &amp; 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 .</p><p>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).</p><p>Female</p><p>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-GISHym13870 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.</p><p>Male</p><p>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.</p><p>Type material examined</p><p>Lectotype  Nematus fuscomaculatus, here designated</p><p>GERMANY – Nordrhein-Westfalen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.09&amp;materialsCitation.latitude=50.77" title="Search Plazi for locations around (long 6.09/lat 50.77)">Aachen area</a>; 50.77° N, 6.09° E; ZSM, GBIF-GISHym3287.</p><p>Lectotype  Pteronus dossuarius, here designated</p><p>RUSSIA – Yakutia • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=126.31&amp;materialsCitation.latitude=64.48" title="Search Plazi for locations around (long 126.31/lat 64.48)">Ust‘-Vilyuyskiy Khrebet</a>; 64.48° N, 126.31° E; B. Poppius leg.; SDEI, GBIFGISHym3852.</p><p>Holotype  Nematus (Pteronidea) carelicus</p><p>RUSSIA – Karelia • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=34.32&amp;materialsCitation.latitude=61.78" title="Search Plazi for locations around (long 34.32/lat 61.78)">Petrosavodsk</a>; 61.78° N, 34.32° E; 1 Jun. 1943; W. Hellén leg.; MZH, http://id.luomus.fi/GL.3501.</p><p>Notes</p><p>The holotype is almost destroyed: only three wings, two legs and about a third of the sclerites of the thorax remain.</p><p>Holotype  Pteronidea winteri</p><p>FINLAND – Uusimaa • ♀; Helsinki, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=24.89&amp;materialsCitation.latitude=60.22" title="Search Plazi for locations around (long 24.89/lat 60.22)">Munksnäs</a> [Munkkiniemi]; 60.22° N, 24.89° E; 19 Jun. 1955; O. Winter leg.; MZH, http://id.luomus.fi/GL.3468.</p><p>Notes</p><p>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 .</p><p>Host plants</p><p>Populus tremula L., but possibly also  Salix spp. in the North if specimens from there are conspecific.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Austria, Estonia, Finland, Germany, Norway, Russia, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FFE0D8289733FBF9FEABFEFC	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFE2D828972EFE7AFD75F994.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura fuscula (Lindqvist 1958)	<div><p>114  Euura fuscula (Lindqvist, 1958)</p><p>Fig. 125</p><p>Pteronidea fuscula Lindqvist, 1958: 116–117 .</p><p>Diagnosis</p><p>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).</p><p>Type material examined</p><p>Holotype  Pteronidea fuscula</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=20.81&amp;materialsCitation.latitude=69.04" title="Search Plazi for locations around (long 20.81/lat 69.04)">Lapin Lääni</a> • ♀; Kilpisjärvi; 69.04° N, 20.81° E; 10 Jul. 1950; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.3566.</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>No data.</p><p>Nuclear No data.</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland.</p></div>	https://treatment.plazi.org/id/03BCA619FFE2D828972EFE7AFD75F994	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFE2D8299745F9A4FAB0FBDE.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura gehrsi (Konow 1903)	<div><p>115  Euura gehrsi (Konow, 1903)</p><p>Figs 104, 338</p><p>Pachynematus gehrsi Konow, 1903a: 381 (key). Lectotype designated by Taeger &amp; Blank (1998).  Pachynematus freyi Lindqvist, 1949: 81–82 . Lectotype designated below. Syn. nov.</p><p>Diagnosis</p><p>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 .</p><p>Type material examined</p><p>Lectotype  Pachynematus gehrsi</p><p>GERMANY – Thüringen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=10.74&amp;materialsCitation.latitude=50.81" title="Search Plazi for locations around (long 10.74/lat 50.81)">Ohrdruf</a>; 50.81° N, 10.74° E; 9 Jun. 1890; A. Frank leg.; SDEI, DEIGISHym12498.</p><p>Lectotype  Pachynematus freyi, here designated</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=25.98&amp;materialsCitation.latitude=69.61" title="Search Plazi for locations around (long 25.98/lat 69.61)">Inari Lapland</a> • ♀; Utsjoki, Outakoski; 69.61° N, 25.98° E; 25 Jun. 1947; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.2448.</p><p>Host plants</p><p>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.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, France, Germany, Norway, Russia, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FFE2D8299745F9A4FAB0FBDE	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFE3D82E975FFB99FBDAFC01.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura infirma (Forster 1854)	<div><p>116  Euura infirma (Förster, 1854)</p><p>Figs 105, 339</p><p>Nematus infirmus Förster, 1854a: 316–318 . Lectotype designated by Taeger &amp; Blank (1998).</p><p>Nematus subaequalis Förster, 1854a: 305–307 . Lectotype designated by Taeger &amp; Blank (1998). Synonymy by Taeger &amp; Blank (1998).</p><p>Diagnosis</p><p>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).</p><p>Female</p><p>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.</p><p>Type material examined</p><p>Lectotype  Nematus infirmus</p><p>GERMANY – Nordrhein-Westfalen • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.09&amp;materialsCitation.latitude=50.77" title="Search Plazi for locations around (long 6.09/lat 50.77)">Aachen area</a>; 50.77° N, 6.09° E; ZSM, GBIF-GISHym 3303.</p><p>Lectotype  Nematus subaequalis</p><p>GERMANY – Nordrhein-Westfalen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.09&amp;materialsCitation.latitude=50.77" title="Search Plazi for locations around (long 6.09/lat 50.77)">Aachen area</a>; 50.77° N, 6.09° E; ZSM, GBIF-GISHym3445  .</p><p>Host plants</p><p>Bistorta officinalis (Macek et al. 2020; rearings by Alexey Zinovjev).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>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 .</p></div>	https://treatment.plazi.org/id/03BCA619FFE3D82E975FFB99FBDAFC01	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFE4D82F9756FC48FAFEF927.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura leionota (Benson 1933)	<div><p>117  Euura leionota (Benson, 1933)</p><p>Fig. 112</p><p>Pteronidea leionota Benson, 1933: 259–260 .</p><p>Pteronidea microserrata Lindqvist, 1941a: 68–69 . Syn. nov.</p><p>Pteronidea nigrita Lindqvist, 1958: 113–114 . Secondary homonym of  Nematus nigritus Norton, 1861 (incertae sedis). Syn. nov.</p><p>Pteronidea clavicercus Lindqvist, 1958: 92–94 . Syn. nov.</p><p>Pteronidea verticalis Lindqvist, 1958: 94 . Syn. nov.</p><p>Nematus amaurus Vikberg, 1982 . Replacement name for  Pteronidea nigrita Lindqvist, 1958 .</p><p>Diagnosis</p><p>Most similar to  E. connecta: see differences mentioned under that species.</p><p>Female</p><p>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.</p><p>Male</p><p>Not known for certain.</p><p>Type material examined</p><p>Holotype  Pteronidea leionota</p><p>UNITED KINGDOM – England • ♀; Devon, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-3.57&amp;materialsCitation.latitude=50.63" title="Search Plazi for locations around (long -3.57/lat 50.63)">Great Haldons</a>; 50.63° N, 3.57° W; Apr. 1926; R.C.L. Perkins leg.; BMNH, B.M.TYPEHYM.1.634.</p><p>Notes</p><p>22 serrulae.</p><p>Holotype  Pteronidea microserrata</p><p>FINLAND – Uusimaa • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=24.439&amp;materialsCitation.latitude=60.126" title="Search Plazi for locations around (long 24.439/lat 60.126)">Kirkkonummi</a>; 60.126° N, 24.439° E; R. Frey leg.; MZH, http://id.luomus. fi/GL.9221.</p><p>Notes</p><p>21 serrulae.</p><p>Holotype  Pteronidea nigrita</p><p>SWEDEN – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=18.83&amp;materialsCitation.latitude=68.35" title="Search Plazi for locations around (long 18.83/lat 68.35)">Torne Lappmark</a> • ♀; Abisko; 68.35° N, 18.83° E; 25–30 Jun. 1954; J.E. and R.B. Benson leg.; BMNH, B.M.TYPEHYM.1.784.</p><p>Notes</p><p>20–21 serrulae; 6 mm.</p><p>Holotype  Pteronidea clavicercus</p><p>FINLAND – Häme • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=23.642&amp;materialsCitation.latitude=61.466" title="Search Plazi for locations around (long 23.642/lat 61.466)">Pirkkala</a>; 61.466° N, 23.642° E; 13 Jun. 1935; T. Grönblom leg.; MZH, PR.558VV.</p><p>Notes</p><p>21 serrulae. Best morphological match: DEI-GISHym12042 (22 serrulae).</p><p>Holotype  Pteronidea verticalis</p><p>FINLAND – Satakunta • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=21.81&amp;materialsCitation.latitude=61.49" title="Search Plazi for locations around (long 21.81/lat 61.49)">Björneborg</a> [Pori]; 61.49° N, 21.81° E; 17 May 1935; E. Lindqvist leg.; MZH, PR.557VV.</p><p>Notes</p><p>23 serrulae. Best morphological match: DEI-GISHym12042 (22 serrulae).</p><p>Host plants</p><p>Betula pendula Roth and  B. pubescens .</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Norway, Slovakia, Sweden, and the United Kingdom.</p></div>	https://treatment.plazi.org/id/03BCA619FFE4D82F9756FC48FAFEF927	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFE5D82D9737F933FB8DF9FA.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura leptostigma (Lindqvist 1958) ZMUO.	<div><p>118  Euura leptostigma (Lindqvist, 1958)</p><p>Figs 131, 352–353</p><p>Pteronidea leptostigma Lindqvist, 1958: 111–113 .</p><p>Pteronidea thunebergi Lindqvist, 1959c: 58–59 . Syn. nov.</p><p>Pteronidea curticornis Lindqvist, 1969: 236–237 . Secondary homonym of  Nematus curticornis Cameron, 1885 [ Euura pedunculi (Hartig, 1837)]. Syn. nov.</p><p>Pteronidea melanochroa Lindqvist, 1969: 235–236 . Syn. nov.</p><p>Pteronidea tegularis Lindqvist, 1969: 236 . Syn. nov.</p><p>Amauronematus nitens Lindqvist, 1977: 93–94 . Secondary homonym of  Nematus nitens Thomson, 1888 [ Euura respondens (Förster, 1854)]. Syn. nov.</p><p>Nematus truncicornis Vikberg, 1982 . Replacement name for  Pteronidea curticornis Lindqvist, 1969 .</p><p>Euura nitidula Prous &amp; Taeger, 2014 in Prous et al. 2014. Replacement name for  Amauronematus nitens Lindqvist, 1977 .</p><p>Diagnosis</p><p>Most similar are  E. leucopyga,  E. parviserrata,  E. sulciceps,  E. sordidiapex,  E. polepso Prous &amp; 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:</p><p>– dorsal margin of lamnium almost straight, basal annuli somewhat higher than middle annuli ......... ......................................................................................................................................  E. sordidiapex</p><p>– dorsal margin of lamnium somewhat bent, middle and basal annuli of similar height ...................... .....................................................................................................................................  E. leptostigma .</p><p>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.</p><p>Female</p><p>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 .</p><p>Type material examined</p><p>Holotype  Pteronidea leptostigma</p><p>SWEDEN – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=18.83&amp;materialsCitation.latitude=68.35" title="Search Plazi for locations around (long 18.83/lat 68.35)">Torne Lappmark</a> • ♀; Abisko; 68.35° N, 18.83° E; 1–5 Jul. 1954; J.E. and R.B. Benson leg.; BMNH, B.M.TYPEHYM.1.783.</p><p>Notes</p><p>Mesepisternum smooth; 20 serrulae.</p><p>Holotype  Pteronidea thunebergi</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=26.23&amp;materialsCitation.latitude=68.75" title="Search Plazi for locations around (long 26.23/lat 68.75)">Inari</a> • ♀; Lemmenjoki; 68.75° N, 26.23° E; 27 Jun. 1917; E. Thuneberg leg.; MZH, http://id.luomus.fi/GL.3595.</p><p>Notes</p><p>19 (?) serrulae, smooth mesepisternum. Best fit: DEI-GISHym12055 (20 serrulae).</p><p>Holotype  Pteronidea curticornis</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=27.03&amp;materialsCitation.latitude=69.91" title="Search Plazi for locations around (long 27.03/lat 69.91)">Inari Lapland</a> • ♀; Utsjoki; 69.91° N, 27.03° E; 7 Jul. 1968; V. Karvonen leg.; MZH, http://id.luomus.fi/GL.3563.</p><p>Notes</p><p>21 serrulae, smooth mesepisternum. Best morphological fit: DEI-GISHym12055 (20 serrulae).</p><p>Holotype  Pteronidea melanochroa</p><p>NORWAY – Troms • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=20.72&amp;materialsCitation.latitude=69.2" title="Search Plazi for locations around (long 20.72/lat 69.2)">Helligskogen</a>; 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.</p><p>Notes</p><p>21–22 serrulae.</p><p>Holotype  Pteronidea tegularis</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=27.03&amp;materialsCitation.latitude=69.91" title="Search Plazi for locations around (long 27.03/lat 69.91)">Inari Lapland</a> • ♀; Utsjoki; 69.91° N, 27.03° E; 17 Jun. 1967; V. Karvonen leg.; MZH, http://id.luomus.fi/GL.3592.</p><p>Notes</p><p>17–18 serrulae, matt mesepisternum.</p><p>Holotype  Amauronematus nitens</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=20.81&amp;materialsCitation.latitude=69.04" title="Search Plazi for locations around (long 20.81/lat 69.04)">Lapin Lääni</a> • ♀; Kilpisjärvi; 69.04° N, 20.81° E; 10 Jul. 1968; L.H. Woollatt leg.; MZH, http://id.luomus.fi/GL.2537.</p><p>Notes</p><p>19–20 serrulae.</p><p>Host plants</p><p>Salix spp.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Norway, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FFE5D82D9737F933FB8DF9FA	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFE7D852973EF97BFBE8F83E.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura leucopyga (Lindqvist 1949)	<div><p>119  Euura leucopyga (Lindqvist, 1949)</p><p>Figs 110–111, 351</p><p>Amauronematus leucopyga Lindqvist, 1949: 69–70 . Holotype ♀, paratypes ♀ ♂.  Type specimens not found in MZH. Type locality: Finland.</p><p>Pteronidea bipicta Lindqvist, 1959c: 56 . Synonymy by Lindqvist (1967b).</p><p>Amauronematus crassiserra Lindqvist, 1960a: 129 . Syn. nov.</p><p>Diagnosis</p><p>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).</p><p>Female</p><p>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.</p><p>Male</p><p>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.</p><p>Type material examined</p><p>Holotype  Pteronidea bipicta</p><p>FINLAND – Central Finland • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=25.55&amp;materialsCitation.latitude=63.36" title="Search Plazi for locations around (long 25.55/lat 63.36)">Pihtipudas</a>; 63.36° N, 25.55° E; 8–9 Jun. 1946; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.3569.</p><p>Notes</p><p>Best morphological match: DEI-GISHym21390.</p><p>Holotype  Amauronematus crassiserra</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=20.81&amp;materialsCitation.latitude=69.04" title="Search Plazi for locations around (long 20.81/lat 69.04)">Lapin Lääni</a> • ♀; 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.</p><p>Notes</p><p>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 .</p><p>Host plants</p><p>Salix spp.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Norway, Russia, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FFE7D852973EF97BFBE8F83E	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF99D853973DFEEEFC1FFA6D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura lipovskyi (D. R. Smith 1974)	<div><p>120  Euura lipovskyi (D.R. Smith, 1974)</p><p>Figs 134, 370</p><p>Nematus lipovskyi D.R. Smith, 1974: 205–207 . Holotype ♀ (USNMENT00779742, USNM, http://n 2t.net/ark:/65665/39b4121c8-5b12-465d-998c-73ffd25da7b2), not examined. Type locality: USA, Massachusetts, Melrose Highlands.</p><p>Diagnosis</p><p>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 .</p><p>Host plants</p><p>Soft-leaved (deciduous)  Rhododendron spp. (Macek &amp; Šípek 2015; Apine &amp; Piterāns 2021).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Holarctic. Specimens studied are from Canada (only genetics), Czech Republic, Estonia, Finland, and the USA. As already mentioned by Macek &amp; 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 &amp; 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 &amp; Dubiel 2009).</p></div>	https://treatment.plazi.org/id/03BCA619FF99D853973DFEEEFC1FFA6D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF99D8509741F9EDFED8FA55.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura mimus (Konow 1903)	<div><p>121  Euura mimus (Konow, 1903)</p><p>Figs 113–114, 359</p><p>Pteronus mimus Konow, 1903b: 311 (key). Lectotype designated below.</p><p>Pteronidea nitida Lindqvist, 1946: 180 . Lectotype designated below. Syn. nov.</p><p>Pteronidea obtusa Lindqvist, 1958: 95 . Syn. nov.</p><p>Nematus truncus Vikberg, 1982: 63 . Replacement name for  Pteronidea obtusa Lindqvist, 1958 .</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Lectotype  Pteronus mimus, here designated</p><p>GERMANY – Mecklenburg-Vorpommern • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=13.36&amp;materialsCitation.latitude=53.45" title="Search Plazi for locations around (long 13.36/lat 53.45)">Teschendorf in Mecklenburg</a>; 53.45° N, 13.36° E; May 1896; F.W. Konow leg.; SDEI, GBIF-GISHym4743.</p><p>Paralectotype</p><p>GERMANY – Mecklenburg-Vorpommern • 1 ♀.; same data as for lectotype; SDEI, GBIFGISHym4671 .</p><p>Lectotype  Pteronidea nitida, here designated</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=24.44&amp;materialsCitation.latitude=60.72" title="Search Plazi for locations around (long 24.44/lat 60.72)">Häme</a> • ♀; Loppi; 60.72° N, 24.44° E; 18 Apr. 1943; A. Saarinen leg.; MZH, http:// id.luomus.fi/GL.3510.</p><p>Holotype  Pteronidea obtusa</p><p>FINLAND – Central Finland • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=25.55&amp;materialsCitation.latitude=63.36" title="Search Plazi for locations around (long 25.55/lat 63.36)">Pihtipudas</a>; 63.36° N, 25.55° E; 6 Jun. 1945; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.3552.</p><p>Host plants</p><p>Unknown. A mention by Conde (1927) of a rearing from [cecidomyiid] galls on  Salix may refer to a different species.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Bulgaria, Finland, Germany, Norway, Russia, Sweden, and Switzerland.</p></div>	https://treatment.plazi.org/id/03BCA619FF99D8509741F9EDFED8FA55	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF9AD851973EF9E5FB10FA82.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura monticola (Thomson 1871) PR.	<div><p>122  Euura monticola (Thomson, 1871)</p><p>Figs 101, 344</p><p>Nematus monticola Thomson, 1871: 147 . Lectotype designated below.</p><p>Nematus pschornwalcheri Muche, 1972: 34–37 . Holotype ♀ (OLML), not examined. Type locality: Switzerland, Jura, Franches Montagnes, Etang de la Gruère. Synonymy by Lacourt (1999).</p><p>Pachynematus vaginosus Konow, 1903a: 381 (key). Syntypes ♀ ♂: specimens lost, only slide of penis valves (PR.231AZ) found in DEI. Type locality: Russia, Irkutsk. Syn. nov.</p><p>Diagnosis</p><p>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.231AZ in SDEI) of a presumably syntype specimen, which resembles most closely  E. monticola .</p><p>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.</p><p>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-GISHym88923. Male ZMUO.061039 has small subapical tooth.</p><p>Type material examined</p><p>Lectotype  Nematus monticola, here designated</p><p>SWEDEN • ♀;  Lapponia intermedia [ central Lapland]; C.H. Boheman leg.; MZLU, MZLU2017319 / DEI-GISHym88923.</p><p>Notes</p><p>17–18 serrulae. Best morphological match: ZMUO.063341.</p><p>Host plants</p><p>Comarum palustre L. (Kangas 1985; Pschorn-Walcher &amp; Altenhofer 2000).</p><p>Genetics</p><p>COI</p><p>Based on 6 specimens, maximum within-species distance is 3.5% and the nearest neighbour, diverging by a minimum of 0%, is  Euura bipartita .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Sweden, and the United Kingdom.</p></div>	https://treatment.plazi.org/id/03BCA619FF9AD851973EF9E5FB10FA82	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF9BD857973AFAD5FC78FE5B.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura parvilabris (Thomson 1863)	<div><p>123  Euura parvilabris (Thomson, 1863)</p><p>Figs 119, 363</p><p>Nematus parvilabris Thomson, 1863: 638 . Lectotype designated below.</p><p>Pontania birulae Konow, 1907: 19–20, 24, pl. 1. Lectotype designated below. Syn. nov.</p><p>Pteronidea nubium Benson, 1935: 28, 30. Syn. nov.</p><p>Pachynematus abstrusus Lindqvist, 1949: 83–84 . Synonymy by Lindqvist (1954).</p><p>Pteronidea roberti Lindqvist, 1958: 117 . Holotype ♀ (BMNH), not examined. Type locality: Sweden, Torne Lappmark, Låktatjokka. We examined a paratype ♀ in MZH (http://id.luomus.fi/GL.5137). Syn. nov.</p><p>Diagnosis</p><p>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 .</p><p>Female</p><p>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.</p><p>Male</p><p>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.</p><p>Type material examined</p><p>Lectotype  Nematus parvilabris, here designated</p><p>SWEDEN – Jämtland • ♀;  Kälahög; A.G. Dahlbom leg.; MZLU, MZLU2017336.</p><p>Lectotype  Pontania birulae, here designated</p><p>RUSSIA – Yakutia • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=149.0&amp;materialsCitation.latitude=75.0" title="Search Plazi for locations around (long 149.0/lat 75.0)">New Siberian Islands</a>; 75.0° N, 149.0° E; 12–28 Jun. 1902; A.A. Birula leg.; SDEI, GBIF-GISHym3857.</p><p>Paralectotypes  Nematus parvilabris</p><p>RUSSIA – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=149.0&amp;materialsCitation.latitude=75.0" title="Search Plazi for locations around (long 149.0/lat 75.0)">Yakutia</a> • 2 ♀♀; New Siberian Islands; 75.0° N, 149.0° E; 12–28 Jun. 1902; A.A. Birula leg.; SDEI, GBIF-GISHym3858, GBIF-GISHym3859  •  1 ♂; same data as for preceding; SDEI, GBIFGISHym3856 .</p><p>Holotype  Pteronidea nubium</p><p>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.</p><p>Holotype  Pachynematus abstrusus</p><p>SWEDEN – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=18.83&amp;materialsCitation.latitude=68.35" title="Search Plazi for locations around (long 18.83/lat 68.35)">Torne Lappmark</a> • ♀; Abisko; 68.35° N, 18.83° E; 1939; R. Krogerus leg.; MZH, http://id.luomus.fi/GL.5144.</p><p>Paratype  Pteronidea roberti</p><p>SWEDEN – Torne Lappmark • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=18.12&amp;materialsCitation.latitude=68.43" title="Search Plazi for locations around (long 18.12/lat 68.43)">Riksgränsen</a>; 68.43° N, 18.12° E; 11–12 Jul. 1954; R.B. and J.E.Benson leg.; MZH, http://id.luomus.fi/GL.5137  .</p><p>Host plants</p><p>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.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Holarctic. Specimens studied are from Finland, Norway, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF9BD857973AFAD5FC78FE5B	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF9DD8549733FE1FFC7FFED8.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura parviserrata (Lindqvist 1944)	<div><p>124  Euura parviserrata (Lindqvist, 1944)</p><p>Figs 129, 354–355</p><p>Pteronidea parviserrata Lindqvist, 1944b: 23–24 .</p><p>Amauronematus subpolaris Lindqvist, 1949: 71–72 . Holotype not found in MZH.Type locality: Finland, Inari Lapland, Utsjoki, Outakoski. Synonymy by Lindqvist (1959a).</p><p>Diagnosis</p><p>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 ”.</p><p>Female</p><p>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.</p><p>Male</p><p>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.</p><p>Type material examined</p><p>Holotype  Pteronidea parviserrata</p><p>RUSSIA – Karelia • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=30.1&amp;materialsCitation.latitude=66.3" title="Search Plazi for locations around (long 30.1/lat 66.3)">Paanajärvi</a>; 66.3° N, 30.1° E; 200 m a.s.l.; S. Platonoff leg.; MZH, http:// id.luomus.fi/GL.3575.</p><p>Host plants</p><p>Salix phylicifolia according to Kangas (1985).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Russia, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF9DD8549733FE1FFC7FFED8	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF9ED85494C0FE9FFD75F8A3.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura perkioemaekii (Lindqvist 1960) Prous & Liston & Monckton & Kramp & Vårdal & Vikberg & Heibo & Mutanen 2025	<div><p>125  Euura perkioemaekii (Lindqvist, 1960) comb. nov.</p><p>Figs 102, 345</p><p>Pachynematus perkioemaekii Lindqvist, 1960b: 36–37 .</p><p>Diagnosis</p><p>Female</p><p>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 (&lt;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.</p><p>Male</p><p>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.</p><p>Type material examined</p><p>Holotype  Pachynematus perkioemaekii</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=29.08&amp;materialsCitation.latitude=66.47" title="Search Plazi for locations around (long 29.08/lat 66.47)">Kuusamo</a> • ♀; Oulanka; 66.47° N, 29.08° E; 1 Jul. 1958; J. Perkiömäki leg.; MZH, http://id.luomus.fi/GL.3509.</p><p>Notes</p><p>16 serrulae. Nearly perfect morphological match: DEI-GISHym84260 (15–16 serrulae).</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>Based on 2 specimens, maximum within-species distance is 0% and the nearest neighbour, diverging by a minimum of 0.91%, is  Euura monticola .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland.</p></div>	https://treatment.plazi.org/id/03BCA619FF9ED85494C0FE9FFD75F8A3	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF9ED855972FF8B6FE13F88D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura polaris (Holmgren 1883)	<div><p>126  Euura polaris (Holmgren, 1883)</p><p>Figs 132, 356</p><p>Nematus polaris Holmgren, 1883: 143, pl. 1 fig. 1. Lectotype designated below.</p><p>Pteronus shumagensis Kincaid, 1900: 357 . Syntype ♀ (USNMENT00778206, USNM, http://n 2t.net/ ark:/65665/35ff0e035-a05a-4e67-952c-f19e4292e418), not examined. Type locality: USA, Alaska, East Aleutians, Popof Island. Synonymy by Benson (1961a), but possibly it is  E. lienterica or some other species in the  E. flavescens group.</p><p>Pontania islandica Kincaid, 1900: 355 . Syntype ♀ (USNMENT00778189, USNM, http://n 2t.net/ ark:/65665/35c79c1ef-402a-4e80-b738-6153f2e0f2e8), labelled as lectotype by J.-P. Kopelke, but designation not published; not examined. Type locality: USA, Alaska, East Aleutians, Popof Island. Synonymy by Benson (1961a). It does seem to belong to the  E. bipartita group.</p><p>Amauronematus polaris ab.  pleuralis Lindqvist, 1944b: 20 . Type not found. Type locality: Finland, Inari, Ivalo. Perhaps not  E. polaris . Unavailable name, because infrasubspecific.</p><p>Diagnosis</p><p>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 .</p><p>Type material examined</p><p>Lectotype  Nematus polaris, here designated</p><p>RUSSIA – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=55.6&amp;materialsCitation.latitude=73.3" title="Search Plazi for locations around (long 55.6/lat 73.3)">Novaja Zemlya</a> • ♀; Matotschkin Scharr [Matochkin Strait]; 73.3° N, 55.6° E; 1875; NHRS, NHRS-HEVA000006445.</p><p>Host plants</p><p>Unknown. Lindqvist (1944b) 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.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Holarctic. Specimens studied are from Finland, Norway, and Russia. Nearctic records, although likely, need confirmation.</p></div>	https://treatment.plazi.org/id/03BCA619FF9ED855972FF8B6FE13F88D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF9FD85B971EF8CBFBE8FB03.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura poppii (Konow 1904) Prous & Liston & Monckton & Kramp & Vårdal & Vikberg & Heibo & Mutanen 2025	<div><p>127  Euura poppii (Konow, 1904) comb. nov.</p><p>Figs 127, 364</p><p>Pontania poppii Konow, 1904b: 230 . Lectotype designated by Muche (1970a).</p><p>Pteronidea lindbergi Lindqvist, 1958: 105–106 . Syn. nov.  Pteronidea wolteri Lindqvist, 1958: 115–116 . Syn. nov.</p><p>Pteronidea gracilicornis Lindqvist, 1962a: 121–122 . Holotype lost? Type locality: Finland, Lapin Lääni, Kilpisjärvi.  Syn. nov. 3.5–4.0 mm. Synonymy uncertain, but based on the original description (colouration, sawsheath, drawing of the tip of the lancet) it seems to fit best with darker forms of  E. poppii .</p><p>Diagnosis</p><p>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 .</p><p>Female</p><p>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.</p><p>Male (based on two specimens)</p><p>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.</p><p>Type material examined</p><p>Lectotype  Pontania poppii</p><p>RUSSIA • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=45.0&amp;materialsCitation.latitude=68.0" title="Search Plazi for locations around (long 45.0/lat 68.0)">Kanin Peninsula</a>; 68.0° N, 45.0° E; B. Poppius leg.; SDEI, GBIF-GISHym3865.</p><p>Notes</p><p>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.</p><p>Holotype  Pteronidea lindbergi</p><p>RUSSIA – Murmansk oblast • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=31.19&amp;materialsCitation.latitude=69.54" title="Search Plazi for locations around (long 31.19/lat 69.54)">Petsamo</a> [Pechenga]; 69.54° N, 31.19° E; 20 Jul. 1929; H. Lindberg leg.; MZH, http://id.luomus.fi/GL.3571.</p><p>Notes</p><p>16–17 serrulae. Best morphological match: DEI-GISHym21379 (15–16 serrulae).</p><p>Holotype  Pteronidea wolteri</p><p>RUSSIA – Murmansk oblast • ♀; Petsamo [Pechenga], <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=31.04&amp;materialsCitation.latitude=69.43" title="Search Plazi for locations around (long 31.04/lat 69.43)">Yläluostari</a> [Luostari]; 69.43° N, 31.04° E; 10 Jul. 1930; W. Hellén leg.; MZH, http://id.luomus.fi/GL.3598.</p><p>Notes</p><p>Lancet fits rather well with  poppii (lectotype and DEI-GISHym21379). Externally fits best with the  winteri holotype.</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Norway, Russia, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF9FD85B971EF8CBFBE8FB03	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF91D858973EFB56FB8DFB2B.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura punctifrons (Malaise 1921)	<div><p>128  Euura punctifrons (Malaise, 1921)</p><p>Figs 120, 361</p><p>Pachynematus punctifrons Malaise, 1921a: 9 . Lectotype designated below.</p><p>Pachynematus glabriceps Lindqvist, 1949: 84–85 . Syn. nov.</p><p>Diagnosis</p><p>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 .</p><p>Female</p><p>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.</p><p>Male</p><p>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.</p><p>Type material examined</p><p>Lectotype  Pachynematus punctifrons, here designated</p><p>SWEDEN – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=19.74&amp;materialsCitation.latitude=68.22" title="Search Plazi for locations around (long 19.74/lat 68.22)">Torne Lappmark</a> • ♀; Torneträsk; 68.22° N, 19.74° E; 400 m a.s.l.; R. Malaise leg.; NHRS, NHRS-HEVA000003566.</p><p>Holotype  Pachynematus glabriceps</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=27.03&amp;materialsCitation.latitude=69.91" title="Search Plazi for locations around (long 27.03/lat 69.91)">Inari Lapland</a> • ♀; Utsjoki; 69.91° N, 27.03° E; 6 Jul. 1947; M. Nuorteva leg.; MZH, http://id.luomus.fi/GL.3567.</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Norway, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF91D858973EFB56FB8DFB2B	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF92D8599751FB2DFAFEFD70.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura scotonota (Forster 1854)	<div><p>129  Euura scotonota (Förster, 1854)</p><p>Figs 117, 368–369</p><p>Nematus scotonotus Förster, 1854a: 310–311 . No type specimens found in ZSM. Type locality: Germany, Aachen.</p><p>Nematus polygoni Benson, 1961a: 228–229 . Holotype ♀ (BMNH), not examined. Type locality: Germany, Bayern, Zwiesel. Synonymy by Lindqvist (1967b).</p><p>Diagnosis</p><p>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).</p><p>Host plants</p><p>Bistorta officinalis .</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>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.</p></div>	https://treatment.plazi.org/id/03BCA619FF92D8599751FB2DFAFEFD70	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF93D85E9734FCC7FB8DFC1B.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura sordidiapex (Lindqvist 1959)	<div><p>130  Euura sordidiapex (Lindqvist, 1959)</p><p>Figs 130, 360</p><p>Pteronidea sordidiapex Lindqvist, 1959c: 57 .</p><p>Pteronidea aspera Lindqvist, 1959c: 58 . Syn. nov.</p><p>Diagnosis</p><p>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).</p><p>Female</p><p>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.</p><p>Male</p><p>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.</p><p>Type material examined</p><p>Holotype  Pteronidea sordidiapex</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=20.81&amp;materialsCitation.latitude=69.04" title="Search Plazi for locations around (long 20.81/lat 69.04)">Lapin Lääni</a> • ♀; Kilpisjärvi; 69.04° N, 20.81° E; 2 Jul. 1950; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.3591.</p><p>Notes</p><p>Mesepisternum matt. Best morphological match: DEI-GISHym12536.</p><p>Holotype  Pteronidea aspera</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=20.85&amp;materialsCitation.latitude=69.05" title="Search Plazi for locations around (long 20.85/lat 69.05)">Lapin Lääni</a> • ♀; Saana; 69.05° N, 20.85° E; 23 Jun. 1938; A. Nordman leg.; MZH, http://id.luomus.fi/GL.3561.</p><p>Notes</p><p>Mesepisternum slightly matt. Best morphological match: DEI-GISHym12536 (externally almost identical).</p><p>Hosts plants</p><p>Betula nana L. and  B. pubescens .</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Norway, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF93D85E9734FCC7FB8DFC1B	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF94D85F9725FC5DFB8DFED9.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura sulciceps (Lindqvist 1959)	<div><p>131  Euura sulciceps (Lindqvist, 1959)</p><p>Figs 121, 357</p><p>Pteronidea sulciceps Lindqvist, 1959c: 57–58 .</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Holotype  Pteronidea sulciceps</p><p>NORWAY – Nordland • ♀; Umbukta, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=14.59&amp;materialsCitation.latitude=66.15" title="Search Plazi for locations around (long 14.59/lat 66.15)">Krabfjäll</a>; 66.15° N, 14.59° E; 13 Jul. 1957; S. Gaunitz leg.; MZH, http://id.luomus.fi/GL.5118.</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Norway, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF94D85F9725FC5DFB8DFED9	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF95D85F975DFE91FD7BF9C2.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura taegeri (Lacourt 1996)	<div><p>132  Euura taegeri (Lacourt, 1996)</p><p>Figs 106, 340</p><p>Polynematus taegeri 
Lacourt, 1996b: 13–14 . Holotype ♀ (MNHN), not examined. Type locality: France, Provence-Alpes-Cote-d’Azur, Ailefroide.</p><p>Diagnosis</p><p>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).</p><p>Female 4.5–5.0 mm. Male 4.0– 4.5 mm.</p><p>Type material examined</p><p>Paratypes  Polynematus taegeri</p><p>FRANCE – Provence-Alpes-Cote-d’Azur • 1♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.45&amp;materialsCitation.latitude=44.89" title="Search Plazi for locations around (long 6.45/lat 44.89)">Ailefroide</a>; 44.89° N, 6.45° E; 25 May 1990; J. Lacourt leg.; SDEI, DEI-GISHym12670  •  2 ♂♂; same data as for preceeding; SDEI, DEI-GISHym12668, DEIGISHym12669 .</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>No data.</p><p>Nuclear No data.</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from France.</p></div>	https://treatment.plazi.org/id/03BCA619FF95D85F975DFE91FD7BF9C2	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF95D85C9740F995FC10FA00.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura uda (Holmgren 1883)	<div><p>133  Euura uda (Holmgren, 1883)</p><p>Figs 122, 365</p><p>Nematus udus Holmgren, 1883: 147–148, pl. 3 fig. 14. Lectotype ♂, designated by Lindqvist (1967a), not found in NHRS. Type locality: Russia, Novaja Zemlya, Matotschkin Scharr or Besimannija Bay.</p><p>Nematus (Pachynematus) acutiventris Hellén, 1948: 115–116 . Lectotype designated below. Syn. nov.</p><p>Pachynematus inopinatus Lindqvist, 1949: 82–83 . Syn. nov.</p><p>Diagnosis</p><p>The most similar species is  E. punctifrons, see discussion under that species. Female</p><p>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.</p><p>Type material examined</p><p>Lectotype  Nematus (Pachynematus) acutiventris, here designated</p><p>FINLAND – Lapin Lääni • ♀; Kilpisjärvi, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=20.74&amp;materialsCitation.latitude=69.05" title="Search Plazi for locations around (long 20.74/lat 69.05)">Pikku-Malla</a>; 3 Jul. 1935; W. Hellén leg.; 69.05° N, 20.74° E; MZH, http://id.luomus.fi/GL.3560  .</p><p>Holotype  Pachynematus inopinatus</p><p>FINLAND – Lapin Lääni • ♀; Kilpisjärvi, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=20.69&amp;materialsCitation.latitude=69.07" title="Search Plazi for locations around (long 20.69/lat 69.07)">Malla</a>; 69.07° N, 20.69° E; 18 Jul. 1943; R. Frey leg.; MZH, http://id.luomus.fi/GL.3580.</p><p>Notes</p><p>Lancet as in  E. uda, but claws with small subapical tooth as in  E. punctifrons .</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF95D85C9740F995FC10FA00	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF96D85D974CFA57FCBDFD00.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura bipartita (Serville 1823)	<div><p>134  Euura bipartita group sp. 1</p><p>Fig. 128</p><p>Notes</p><p>Only one female (DEI-GISHym84691) 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 DEIGISHym84691 may have somewhat longer and flatter serrulae. DEI-GISHym84691 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-GISHym84691, but  E. poppii seems to be (usually?) smaller (&lt;5 mm) and has a smooth mesepisternum.</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>Only one sequence available. The nearest neighbour, diverging by a minimum of 1.98%, is  Euura connecta .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Only one specimen studied from Finland.</p></div>	https://treatment.plazi.org/id/03BCA619FF96D85D974CFA57FCBDFD00	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF97D840971AFD57FC10FCEC.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura polepso Prous & Liston & Monckton & Kramp & Vårdal & Vikberg & Heibo & Mutanen 2025	<div><p>135  Euura polepso Prous &amp; Mutanen sp. nov.</p><p>urn:lsid:zoobank.org:act: 2049F196-0E59-403C-8D3B-5AF1FEABA7D1</p><p>Figs 79–80, 133, 358</p><p>Diagnosis</p><p>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 .</p><p>Etymology</p><p>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).</p><p>Type material</p><p>Holotype</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=21.58&amp;materialsCitation.latitude=69.16" title="Search Plazi for locations around (long 21.58/lat 69.16)">Lapin Lääni</a> • ♀; 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.</p><p>Paratypes</p><p>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, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=20.8&amp;materialsCitation.latitude=69.09" title="Search Plazi for locations around (long 20.8/lat 69.09)">Jehkas</a>; 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 .</p><p>NORWAY – Sogn og Fjordane • 1 ♀, Aurlandsvegen, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=7.332&amp;materialsCitation.latitude=61.021" title="Search Plazi for locations around (long 7.332/lat 61.021)">Nedre Kaldeklettane Lok. 2</a>; 61.021° N, 7.332° E; 1112 m a.s.l.; 26 Jun. 2011; E. Heibo leg.; CEH, N8571  .</p><p>Other material exmined</p><p>FINLAND – Lapin Lääni • 1 ♂; same data as for holotype; 24 Jun. 2021; ZMUO.059930 might also belong here .</p><p>Description</p><p>Female</p><p>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.</p><p>Male</p><p>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.</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>Based on 5 specimens, maximum within-species distance is 0% and the nearest neighbour, diverging by a minimum of 0.76%, is  Euura leptostigma .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, and Norway.</p></div>	https://treatment.plazi.org/id/03BCA619FF97D840971AFD57FC10FCEC	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF8AD8419730FC2AFACEFB72.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura caeruleocarpus (Hartig 1837)	<div><p>137  Euura caeruleocarpus (Hartig, 1837)</p><p>Figs 135, 371</p><p>Nematus propinquus Dahlbom, 1835a: 25 . Nomen oblitum (Blank et al. 2009). Described based on larvae. Type material not located. Type locality: Sweden, Skåne, Lilla Raby near Lund. Synonymy with  brachyacanthus by Thomson (1871).</p><p>Nematus caeruleocarpus Hartig, 1837: 187 . Nomen protectum (Blank et al. 2009).</p><p>Nematus sulcipes Hartig, 1837: 186–187 . Lectotype designated below. Synonymy by Kriechbaumer (1885).</p><p>Nematus brevispinis Förster, 1854a: 338–339 . Lectotype designated below. Synonymy by Kriechbaumer (1885).</p><p>Nematus brachyacanthus Thomson, 1863: 629 . Lectotype designated below. Synonymy by Cameron (1885).</p><p>Nematus insubricus 
Cobelli, 1892: 70–71 . Holotype ♀ (ROV), not examined. Type locality: Italy,  Milano area . Synonymy by Dalla Torre (1894).</p><p>Diagnosis</p><p>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:</p><p>– head and thorax with long hair; hind tibia completely and hind tarsus mainly yellow; pterostigma yellow ..................................................................................................................................  E. villosa</p><p>– head and thorax with short hair; hind tibia black at tip and hind tarsus completely black; pterostigma black, rarely bicoloured ........................................................................................  E. caeruleocarpus .</p><p>Female: 8.0– 10.5 mm. Male: 7.5–8.5 mm.</p><p>Type material examined</p><p>Holotype  Nematus caeruleocarpus</p><p>GERMANY – Niedersachsen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=10.3&amp;materialsCitation.latitude=51.8" title="Search Plazi for locations around (long 10.3/lat 51.8)">Harz</a>; 51.8° N, 10.3° E; W. Saxesen leg.; ZSM, GBIF-GISHym3212.</p><p>Lectotype  Nematus sulcipes, here designated  GERMANY • ♀; ZSM, GBIF-GISHym3446.</p><p>Lectotype  Nematus brevispinis, here designated</p><p>GERMANY – Nordrhein-Westfalen • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.09&amp;materialsCitation.latitude=50.77" title="Search Plazi for locations around (long 6.09/lat 50.77)">Aachen area</a>; 50.77° N, 6.09° E; ZSM, GBIF-GISHym 3210.</p><p>Lectotype  Nematus brachyacanthus, here designated</p><p>SWEDEN • ♀; Skåne; MZLU, MZLU2017284.</p><p>Host plants</p><p>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 1958a).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Austria, Bulgaria, Finland, Germany, Russia, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF8AD8419730FC2AFACEFB72	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF8BD8469754FAC5FD62FC09.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura villosa (Thomson 1863)	<div><p>138  Euura villosa (Thomson, 1863)</p><p>Figs 136, 372</p><p>Nematus villosus Thomson, 1863: 629 . Lectotype designated below.</p><p>Nematus arcticus Holmgren, 1869: 18 . Lectotype designated below. Synonymy by Hellén (1943).</p><p>Nematus brachyacanthus var. palliditarsus Cameron, 1876b: 312–313 . Holotype ♂ (BMNH), not examined. Type locality: Norway; Spitsbergen [Svalbard]. Synonymy by Benson (1934).</p><p>Nematus gelidus W.F. Kirby, 1882: 115–116 . Holotype ♂ (BMNH), not examined. Type locality: Norway; Spitsbergen [Svalbard]. Synonymy by Benson (1934).</p><p>Diagnosis</p><p>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).</p><p>Type material examined</p><p>Lectotype  Nematus villosus, here designated</p><p>SWEDEN • ♀;  Lapponia intermedia [ central Lapland]; C.H. Boheman leg.; NHRS, NHRS-HEVA000003992.</p><p>Lectotype  Nematus arcticus, here designated</p><p>NORWAY – Svalbard • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=14.25&amp;materialsCitation.latitude=78.04" title="Search Plazi for locations around (long 14.25/lat 78.04)">Green Harbour</a> [Grønfjorden]; 78.04° N, 14.25° E; NHRS, NHRS-HEVA000006480.</p><p>Host plants</p><p>Salix glauca is the only recorded host, but probably other  Salix spp. are also used.</p><p>Genetics</p><p>COI</p><p>Only one sequence is available. The nearest neighbour, diverging by a minimum of 0.61%, is  Euura caeruleocarpus .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Holarctic. Specimens studied are from Norway.</p></div>	https://treatment.plazi.org/id/03BCA619FF8BD8469754FAC5FD62FC09	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF8CD846976AFC42FD4BFA38.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura clitellata (Serville 1823) ZMUO.	<div><p>139  Euura clitellata group</p><p>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).</p><p>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.</p></div>	https://treatment.plazi.org/id/03BCA619FF8CD846976AFC42FD4BFA38	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF8CD8479738FA31FADEFC0C.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura clibrichella (Cameron 1878)	<div><p>140  Euura clibrichella (Cameron, 1878)</p><p>Figs 137, 373</p><p>Nematus clibrichellus 
Cameron, 1878: 32–33 . Holotype ♂ (BMNH), not examined. Type locality: United Kingdom, Scotland,  Sutherlandshire, Ben Clibrich.</p><p>Nematus thomsoni Cameron, 1882: 540 . Syntypes ♀♀ (BMNH), not examined. Type locality: United Kingdom, Scotland, Braemar. Synonymy by Benson (1935).</p><p>Pachynematus pubescens Marlatt, 1896a: 91–92 (key), 100–101. Syntypes 3 ♀ ♀ (CUIC?), not examined. Type locality: USA, New Hampshire, Mt Washington.</p><p>Pachynematus gotarus 
Kincaid, 1900: 348–349 . Holotype ♂ (USNMENT00778181, USNM, http://n 2t.net/ark:/65665/3bd1b00d6-1001-4d9d-9b1f-0d1529d0741b), not examined. Type locality: USA, Alaska, East Aleutians,  Popof Island .</p><p>Pachynematus venustus 
MacGillivray, 1921a: 190–191 . Holotype ♂ (CASTYPE826, CAS), not examined. Type locality: USA, Alaska, Pribolof Islands,  St George Island .</p><p>Pachynematus vernus 
MacGillivray, 1921a: 191–192 . Holotype ♂ (CASTYPE827, CAS), not examined. Type locality: USA, Alaska, Pribolof Islands,  St George Island .</p><p>Diagnosis</p><p>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.</p><p>Host plants</p><p>Carex sp. (Dyar 1897).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Holarctic. Specimens studied are from Canada, Finland, Norway, Sweden, and the United Kingdom.</p></div>	https://treatment.plazi.org/id/03BCA619FF8CD8479738FA31FADEFC0C	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF8DD8489753FC4AFE6EF9EF.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura clitellata (Serville 1823) ZMUO.	<div><p>141  Euura clitellata (Serville, 1823)</p><p>Figs 138–141, 375–378</p><p>Nematus clitellatus Serville, 1823: 64 . Holotype ♀ (MRSN), not examined. Type locality: France; vicinity of Paris. Best match: possibly ZMUO.029709 and ZMUO.040755, but wings slightly smoky.</p><p>Nematus kirbyi Dahlbom, 1835a: 40, pl. 1 fig.4. Lectotype ♂ (ZMHB), designated by Haris (1997), not examined. One originally unlabelled male specimen (MZLU2017282) under the name “  Nematus kirbyi ” in Dahlbom’s collection (MZLU) could be a paralectotype. Type locality: Germany or Scandinavia. Synonymy by Taeger &amp; Blank (1998).</p><p>Nematus flaviventris Hartig, 1840: 24 . Lectotype designated below. Synonymy by Taeger &amp; Blank (1998).</p><p>Nematus leucocarpus Hartig, 1840: 27 . Lectotype designated by Taeger &amp; Blank (1998). Synonymy by Taeger &amp; Blank (1998).</p><p>Nematus brachycercus Hartig, 1840: 25 . Lectotype designated by Haris (1997). Syn. nov.</p><p>Nematus squalidus Eversmann, 1847: 21 . Lectotype designated below. Syn. nov.</p><p>Nematus cinereus Eversmann, 1847: 18 . Lectotype designated below. Syn. nov.</p><p>Nematus contractus Eversmann, 1847: 20 . Lectotype designated below. Synonymy with  Pachynematus flaviventris by Konow (1905b).</p><p>Nematus diaphanus Eversmann, 1847: 19–20 . Lectotype designated below. Synonymy with  flaviventris by Konow (1904d).</p><p>Nematus fruticum Eversmann, 1847: 18 . Lectotype designated below. Syn. nov.</p><p>Nematus umbripennis Eversmann, 1847: 20–21 . Lectotype designated below. Synonymy with  kirbyi by Benson (1958a).</p><p>Nematus griseus Eversmann, 1847: 18–19 . Syntypes ♀♀ (DEI-GISHym30040–47, ZIN). Type locality: Russia, Kasan. Tentatively synonymised by Enslin (1916a). Like  Nematus kirbyi Dahlbom.</p><p>Tenthredo (Selandria) umbrosa Eversmann, 1847: 32 . Lectotype designated below. Syn. nov.</p><p>Epitactus praecox Förster, 1854b: 435–436 . Lectotype designated by Haris (1997). Synonymy with  kirbyi by Muche (1974).</p><p>Nematus trisignatus Förster, 1854a: 292–294 . Lectotype designated by Haris (1997). Synonymy by Enslin (1916a).</p><p>Nematus microps Förster, 1854b: 421–422 . Lectotype designated by Haris (1997). Synonymy by Haris (1997).</p><p>Nematus pectoralis Snellen van Vollenhoven, 1867: 223–224 . Lectotype ♀ (ZMAN), designated by Thomas (1987), not examined. Type locality: Netherlands, Brummen. Synonymy with  trisignatus by Konow (1904c). Primary homonym of  Nematus pectoralis Serville, 1823 .</p><p>Nematus turgidus Zaddach, 1876: 82–83 . Syntypes ♀♀, probably destroyed (Blank &amp; Taeger 1998). Type locality: Russia, Insterburg [Chernyakhovsk], and Poland, Gdansk [Danzig]. Synonymy by Enslin (1916a).</p><p>Nematus tener Zaddach, 1884 in Brischke 1884: 128. Syntypes ♂♂, probably destroyed (Blank &amp; Taeger 1998). Type locality: Poland, Gdansk [Danzig]. Synonymy by Konow (1904d).</p><p>Pachynematus infumatus Marlatt, 1896a: 93 (key), 107–108. Synonymy with  Pachynematus kirbyi (Dahlbom) by Smith (1979).</p><p>Pachynematus zaddachi Konow, 1901c: 110 . Lectotype designated by Haris (1997). Synonymy with  umbripennis by Enslin (1916a).</p><p>Pachynematus glesipennis Konow, 1903a: 377 (key). Lectotype designated by Haris (1997). Synonymy with  umbripennis by Enslin (1916a).</p><p>Pachynematus foveolatus Konow, 1903a: 379 (key). Lectotype ♂ (GBIF-GISHym4670, SDEI), designated by Haris (1997). Type locality: Russia, Irkutsk. Synonymy by Haris (1997).</p><p>Pachynematus lentus Konow, 1903a: 382 (key). Lectotype designated by Haris (1997). Synonymy by Muche (1974).</p><p>Pachynematus clitellatus var. transigens Enslin, 1916a: 479 . Lectotype ♀ (DEI-GISHym84486, ZSM), designated by Haris (1997). Type locality: Germany, Neuss. Synonymy by Haris (1997).</p><p>Pachynematus laevigatus var. flavissimus Enslin, 1916a: 483 . Syntype (?) ♀ (DEI-GISHym84487, ZSM) [seems to match the original description]. Type locality: Germany, Oranienbaum. Synonymy by Taeger &amp; Blank (1998).</p><p>Pachynematus refractarius MacGillivray, 1921b: 31–32 . Holotype ♀ (INHS), not examined. Type locality: USA, Maine, Orono. Synonymy with  Pachynematus kirbyi (Dahlbom) by Smith (1979). Based on the original description it could be similar to  Nematus kirbyi Dahlbom.</p><p>Pachynematus truncatus Benson, 1948a: 60–65 . Holotype ♂ (B.M.TYPEHYM.1.702, BMNH). Type locality: United Kingdom, England, Bucks., Slapton. Synonymy by Haris (1997). Secondary homonym of  Pontania truncata Marlatt, 1896a [ Euura truncata (Marlatt, 1896)].</p><p>Pachynematus smithae Ross, 1945: 106 (key), 116. Holotype ♂ (INHS), not examined. Type locality: USA, New Hampshire,  Mt Washington. Syn. nov.</p><p>Nematus (Pachynematus) omega Benson, 1955: 103–104 . Lectotype designated below Syn. nov.</p><p>Pachynematus aequalis Lindqvist, 1974a: 120 . Syn. nov.</p><p>Diagnosis</p><p>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 &amp; 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%2B1599793934.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 .</p><p>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 .</p><p>Type material examined</p><p>Lectotype  Nematus flaviventris, here designated</p><p>GERMANY • ♀;  northern Germany [according to Hartig 1840: 22]; ZSM, DEI-GISHym3277.</p><p>Notes</p><p>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 &amp; Blank (1998).</p><p>Lectotype  Nematus leucocarpus</p><p>GERMANY • ♀;  northern Germany [according to Hartig 1840: 22]; ZSM, DEI-GISHym84485.</p><p>Notes</p><p>8.5 mm. The mesepisternum is completely pale, unlike any other specimen we have seen.</p><p>Lectotype  Nematus brachycercus</p><p>GERMANY • ♀;  northern Germany [according to Hartig 1840: 22]; ZSM, DEI-GISHym3208.</p><p>Lectotype  Nematus squalidus, here designated</p><p>RUSSIA – Tatarstan • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=49.1&amp;materialsCitation.latitude=55.8" title="Search Plazi for locations around (long 49.1/lat 55.8)">Kasan Province</a>; 55.8° N, 49.1° E; E. Eversmann leg.; ZIN, DEI-GISHym30060.</p><p>Notes</p><p>Best morphological match: e.g., ZMUO.032426, ZMUO.039092, ZMUO.046267, ZMUO.045459, ZMUO.063011, DEI-GISHym31252, DEI-GISHym84266.</p><p>Lectotype  Nematus cinereus, here designated</p><p>RUSSIA – Tatarstan • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=49.1&amp;materialsCitation.latitude=55.8" title="Search Plazi for locations around (long 49.1/lat 55.8)">Kasan Province</a>; 55.8° N, 49.1° E; E. Eversmann leg.; ZIN, DEI-GISHym30036.</p><p>Notes</p><p>Resembles  Nematus kirbyi .</p><p>Lectotype  Nematus contractus, here designated</p><p>RUSSIA – Tatarstan • ♀;  Kasan / Ulyanovsk [Simbirsk] / Orenburg; ZIN, DEI-GISHym30052.</p><p>Notes</p><p>Similar to  Nematus kirbyi .</p><p>Paralectotype  Nematus contractus</p><p>RUSSIA – Tatarstan • ♂;  Kasan / Ulyanovsk [Simbirsk] / Orenburg; ZIN, DEI-GISHym30053  .</p><p>Notes</p><p>Perhaps  Nematinus bilineatus (Klug, 1819) .</p><p>Lectotype  Nematus diaphanus, here designated</p><p>RUSSIA • ♀; Orenburg oblast; 51.8° N, 55.1° E; E. Eversmann leg.; ZIN, DEI-GISHym30051.</p><p>Notes</p><p>Similar to  Nematus kirbyi .</p><p>Lectotype  Nematus fruticum, here designated</p><p>RUSSIA – Tatarstan • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=49.1&amp;materialsCitation.latitude=55.8" title="Search Plazi for locations around (long 49.1/lat 55.8)">Kasan Province</a>; 55.8° N, 49.1° E; E. Eversmann leg.; ZIN, DEI-GISHym30035.</p><p>Notes</p><p>Similar to  Nematus kirbyi .</p><p>Lectotype  Nematus umbripennis, here designated</p><p>RUSSIA – Tatarstan • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=49.1&amp;materialsCitation.latitude=55.8" title="Search Plazi for locations around (long 49.1/lat 55.8)">Kasan Province</a>; 55.8° N, 49.1° E; E. Eversmann leg.; ZIN, DEI-GISHym30054.</p><p>Notes</p><p>Similar to  Nematus kirbyi .</p><p>Lectotype  Tenthredo (Selandria) umbrosa, here designated</p><p>RUSSIA – Tatarstan • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=49.1&amp;materialsCitation.latitude=55.8" title="Search Plazi for locations around (long 49.1/lat 55.8)">Kasan Province</a>; 55.8° N, 49.1° E; E. Eversmann leg.; ZIN, DEI-GISHym30048  .</p><p>Notes</p><p>Similar to  Nematus kirbyi .</p><p>Lectotype  Epitactus praecox</p><p>GERMANY – Nordrhein-Westfalen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.09&amp;materialsCitation.latitude=50.77" title="Search Plazi for locations around (long 6.09/lat 50.77)">Aachen area</a>; 50.77° N, 6.09° E; ZSM.</p><p>Notes</p><p>Similar to  Nematus kirbyi .</p><p>Lectotype  Nematus trisignatus</p><p>GERMANY – Nordrhein-Westfalen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.09&amp;materialsCitation.latitude=50.77" title="Search Plazi for locations around (long 6.09/lat 50.77)">Aachen area</a>; 50.77° N, 6.09° E; ZSM.</p><p>Lectotype  Nematus microps</p><p>GERMANY – Nordrhein-Westfalen • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.09&amp;materialsCitation.latitude=50.77" title="Search Plazi for locations around (long 6.09/lat 50.77)">Aachen area</a>; 50.77° N, 6.09° E; ZSM, DEI-GISHym12485.</p><p>Holotype  Pachynematus infumatus</p><p>USA – Michigan • ♂; Ingham, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-84.483&amp;materialsCitation.latitude=42.746" title="Search Plazi for locations around (long -84.483/lat 42.746)">Agricultural College</a>; 42.746°N, 84.483°W; USNM, USNMENT00778520, http://n 2t.net/ark:/65665/322992bb4-e435-4a95-83cc-6b7a4796c66a.</p><p>Notes</p><p>Similar to  Nematus kirbyi .</p><p>Lectotype  Pachynematus zaddachi</p><p>GERMANY – Mecklenburg-Vorpommern • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=13.07&amp;materialsCitation.latitude=53.32" title="Search Plazi for locations around (long 13.07/lat 53.32)">Kalkhorst</a>; 53.32° N, 13.07° E; 1 Aug. 1889; F.W. Konow leg.; SDEI, GBIF-GISHym3875.</p><p>Notes</p><p>Similar to  Nematus kirbyi .</p><p>Lectotype  Pachynematus glesipennis</p><p>RUSSIA – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=104.24&amp;materialsCitation.latitude=52.29" title="Search Plazi for locations around (long 104.24/lat 52.29)">Irkutskaja oblast</a> • ♂; Irkutsk; 52.29° N, 104.24° E; SDEI, GBIF-GISHym3876.</p><p>Lectotype  Pachynematus foveolatus</p><p>RUSSIA – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=104.24&amp;materialsCitation.latitude=52.29" title="Search Plazi for locations around (long 104.24/lat 52.29)">Irkutskaja oblast</a> • ♂; Irkutsk; 52.29° N, 104.24° E; SDEI, GBIF-GISHym4670.</p><p>Lectotype  Pachynematus lentus</p><p>GERMANY • ♀; Thüringen; SDEI, GBIF-GISHym3874.</p><p>Notes</p><p>Best morphological fit: DEI-GISHym21348 or ZMUO.059768.</p><p>Lectotype  Pachynematus clitellatus var. transigens</p><p>GERMANY – Nordrhein-Westfalen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.69&amp;materialsCitation.latitude=51.2" title="Search Plazi for locations around (long 6.69/lat 51.2)">Neuss</a>; 51.20° N, 6.69° E; ZSM, DEI-GISHym84486.</p><p>Holotype  Pachynematus truncatus</p><p>UNITED KINGDOM – England • ♂; Buckinghamshire, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-1.06&amp;materialsCitation.latitude=52.12" title="Search Plazi for locations around (long -1.06/lat 52.12)">Slapton</a>; 52.12° N, 1.06° W; 26 May 1943; R.B. Benson leg.; BMNH, B.M.TYPEHYM.1.702.</p><p>Lectotype  Nematus (Pachynematus) omega, here designated</p><p>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  .</p><p>Notes</p><p>Most similar to ZMUO.030823 and DEI-GISHym12503.</p><p>Holotype  Pachynematus aequalis</p><p>RUSSIA – Murmansk oblast • ♀; Petsamo [Pechenga], <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=31.04&amp;materialsCitation.latitude=69.43" title="Search Plazi for locations around (long 31.04/lat 69.43)">Yläluostari</a> [Luostari]; 69.43° N, 31.04° E; 5 Jul. 1938; V.J. Karvonen leg.; MZH, http://id.luomus.fi/GL.5145.</p><p>Notes</p><p>A COI sequence (658 bp) of the holotype is closest to BIOUG 16846-H10 (Canada). Most similar to DEI-GISHym84245, 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.</p><p>Host plants</p><p>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 .</p><p>Genetics</p><p>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.</p><p>COI</p><p>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% (09BBEHY-0204, the only representative of BOLD:AAI2591).</p><p>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).</p><p>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).</p><p>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.</p><p>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.</p><p>Nuclear</p><p>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.</p><p>Cluster 2. Only one sequence available. The nearest neighbour, diverging by a minimum of 1.51%, is  Euura clitellata cluster 5.</p><p>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.</p><p>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.</p><p>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.</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Estonia (cluster 4), Finland, France, Germany, Russia, Sweden, and the United Kingdom.</p></div>	https://treatment.plazi.org/id/03BCA619FF8DD8489753FC4AFE6EF9EF	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF82D8489743F96BFDAFF853.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura fallax (Serville 1823)	<div><p>142  Euura fallax (Serville, 1823)</p><p>Figs 142, 379</p><p>Nematus fallax Serville, 1823: 66 . Lectotype designated by Lacourt (2000).</p><p>Nematus melanocerus Hartig, 1840: 26 . Lectotype designated by Taeger &amp; Blank (1998). Synonymy with  xanthocarpus by Taeger &amp; Blank (1998).</p><p>Nematus xanthocarpus Hartig, 1840: 23 . Types lost (Taeger &amp; Blank, 1998). Type locality: northern Germany. Synonymy by Lacourt (1999).</p><p>Nematus eupodius Hartig, 1840: 26 . Lectotype designated by Haris (1997). Synonymy with  xanthocarpus by Taeger &amp; Blank (1998).</p></div>	https://treatment.plazi.org/id/03BCA619FF82D8489743F96BFDAFF853	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF83D84E95ACFEEDFE05F893.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Nematus einersbergensis Hartig 1840	<div><p>Nematus einersbergensis Hartig, 1840: 26 . Lectotype designated by Taeger &amp; Blank (1998). Syn. nov.</p><p>Nematus schmidtii Gimmerthal, 1844: 37 . Syntypes ♀♀ (deposition unknown). Type locality: Latvia, vicinity of Riga. Synonymy with  xanthocarpus by Taeger &amp; Blank (1998).</p><p>Nematus eversmanni Förster, 1854b: 423–424 . Lectotype designated by Haris (1997). Synonymy with  xanthocarpus by Taeger &amp; Blank (1998).</p><p>Nematus emarginatus Förster, 1854b: 424–425 . Lectotype designated by Haris (1997). Synonymy with  xanthocarpus by Taeger &amp; Blank (1998).</p><p>Nematus circumscriptus Förster, 1854a: 301–302 . Lectotype designated by Haris (1997). Synonymy with  xanthocarpus by Konow (1904c).</p><p>Nematus erythropareus Zaddach, 1884 in Brischke 1884: 130. Holotype ♀, not located. Type locality: Austria, Tirol, Innsbruck. Synonymy with  xanthocarpus by Taeger &amp; Blank (1998).</p><p>Pachynematus sulcatus Benson, 1948a: 60–65 . Synonymy with  xanthocarpus by Haris (1997).</p><p>Pachynematus chambersi Benson, 1948a: 60–65 . Synonymy with  xanthocarpus by Haris (1997).</p><p>Pachynematus calcicola Benson, 1948a: 60–65 . Synonymy with  xanthocarpus by Taeger &amp; Blank (1998).</p><p>Pachynematus angustatus Lindqvist, 1949: 85 . Syn. nov.</p><p>Pachynematus virginalis Liston, 1980a: 241–242 . Synonymy by Liston et al. (2006).</p><p>Diagnosis</p><p>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-GISHym16246). 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.</p><p>Females are very similar to those of  E. clitellata, see under that species.</p><p>Type material examined</p><p>Lectotype  Nematus fallax [designated by Lacourt (2000), photos examined]</p><p>FRANCE – Ile-de-France • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=2.3&amp;materialsCitation.latitude=48.9" title="Search Plazi for locations around (long 2.3/lat 48.9)">Paris</a>; 48.9° N, 2.3° E; MRSN, EY34235  .</p><p>Lectotype  Nematus melanocerus</p><p>GERMANY • ♂;  northern Germany [according to Hartig 1840: 22]; ZSM, DEI-GISHym12497.</p><p>Lectotype  Nematus eupodius</p><p>GERMANY • ♂;  northern Germany [according to Hartig 1840: 22]; ZSM, DEI-GISHym12495.</p><p>Lectotype  Nematus einersbergensis</p><p>GERMANY – Niedersachsen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=10.3&amp;materialsCitation.latitude=51.81" title="Search Plazi for locations around (long 10.3/lat 51.81)">Einersberg</a>; 51.81° N, 10.30° E; ZSM, DEI-GISHym84488.</p><p>Notes</p><p>Best morphological match: ZMUO.032994, ZMUO.029665, DEI-GISHym12609.</p><p>Lectotype  Nematus eversmanni</p><p>RUSSIA – Tatarstan • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=49.1&amp;materialsCitation.latitude=55.8" title="Search Plazi for locations around (long 49.1/lat 55.8)">Kasan Province</a>; 55.8° N, 49.1° E; E. Eversmann leg.; ZIN, DEI-GISHym12486.</p><p>Notes</p><p>The penis valve fits with DEI-GISHym84275.</p><p>Lectotype  Nematus emarginatus</p><p>GERMANY – Rheinland-Pfalz • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=7.57&amp;materialsCitation.latitude=50.22" title="Search Plazi for locations around (long 7.57/lat 50.22)">Boppard</a>; 50.22° N, 7.57° E; ZSM, DEI-GISHym12496.</p><p>Lectotype  Nematus circumscriptus</p><p>GERMANY – Nordrhein-Westfalen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.09&amp;materialsCitation.latitude=50.77" title="Search Plazi for locations around (long 6.09/lat 50.77)">Aachen area</a>; 50.77° N, 6.09° E; ZSM, DEI-GISHym12489.</p><p>Holotype  Pachynematus sulcatus</p><p>UNITED KINGDOM – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-4.32&amp;materialsCitation.latitude=56.47" title="Search Plazi for locations around (long -4.32/lat 56.47)">Scotland</a> • ♂; 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.</p><p>Holotype  Pachynematus chambersi</p><p>UNITED KINGDOM – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-0.49&amp;materialsCitation.latitude=52.03" title="Search Plazi for locations around (long -0.49/lat 52.03)">England</a> • ♂; 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.</p><p>Notes</p><p>Best morphological match: DEI-GISHym84450.</p><p>Holotype  Pachynematus calcicola</p><p>UNITED KINGDOM – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-2.25&amp;materialsCitation.latitude=54.16" title="Search Plazi for locations around (long -2.25/lat 54.16)">England</a> • ♂; 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.</p><p>Holotype  Pachynematus angustatus</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=25.98&amp;materialsCitation.latitude=69.61" title="Search Plazi for locations around (long 25.98/lat 69.61)">Inari Lapland</a> • ♀; Utsjoki, Outakoski; 69.61° N, 25.98° E; 22 Jun. 1947; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.3427.</p><p>Holotype  Pachynematus virginalis</p><p>UNITED KINGDOM – Scotland • ♂; Edinburgh, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-3.15&amp;materialsCitation.latitude=55.94" title="Search Plazi for locations around (long -3.15/lat 55.94)">Duddingston Loch</a>; 55.94° N, 3.15° W; 2 Jun. 1979; A. Liston leg.; RSME.</p><p>Host plants</p><p>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 .</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, France, Germany, Portugal, Russia, Sweden, and the United Kingdom.</p></div>	https://treatment.plazi.org/id/03BCA619FF83D84E95ACFEEDFE05F893	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF84D84F9729F8A7FE02F9FC.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura lichtwardti (Konow 1903)	<div><p>143  Euura lichtwardti (Konow, 1903)</p><p>Figs 143, 380</p><p>Nematus apicalis Hartig, 1837: 201 . Lectotype designated by Haris (1997). Synonymy by Lindqvist (1955). Primary homonym of  Nematus apicalis Stephens, 1835 [ Dineura stilata (Klug, 1816)].</p><p>Pachynematus lichtwardti Konow, 1903a: 379 (key). Lectotype designated below.</p><p>Pachynematus kubesi Konow, 1905a: 154 . Lectotype designated below. Synonymy by Lacourt (1999).</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Lectotype  Nematus apicalis</p><p>GERMANY [according to the title of Hartig 1837] • ♀; ZSM, GBIF-GISHym3196.</p><p>Lectotype  Pachynematus lichtwardti, here designated</p><p>CZECH REPUBLIC – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=17.21&amp;materialsCitation.latitude=50.08" title="Search Plazi for locations around (long 17.21/lat 50.08)">Sudeten</a> • ♀; Altvater; 50.08° N, 17.21° E; 12 Jun. 1900; B. Lichtwardt leg.; SDEI, GBIF-GISHym3872.</p><p>Lectotype  Pachynematus kubesi, here designated</p><p>CZECH REPUBLIC – Central Bohemia • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=15.2&amp;materialsCitation.latitude=50.03" title="Search Plazi for locations around (long 15.2/lat 50.03)">Kolin</a>; 50.03° N, 15.20° E; A. Kubes leg.; SDEI, GBIFGISHym3873.</p><p>Host plants</p><p>Elytrigia repens (L.) Gould. (Kontuniemi 1965),  Calamagrostis spp. (Kangas 1985; Macek et al. 2020).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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).</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Czech Republic, Finland, Germany, Norway, Sweden, and the United Kingdom.</p></div>	https://treatment.plazi.org/id/03BCA619FF84D84F9729F8A7FE02F9FC	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF85D84C9756F97AFEBDF804.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura moerens (Forster 1854)	<div><p>144  Euura moerens (Förster, 1854)</p><p>Figs 144, 381</p><p>Nematus moerens Förster, 1854a: 294–295 . Lectotype designated below.</p><p>Nematus pygostolus Förster, 1854b: 431–432 . Lectotype designated by Weiffenbach (1962). Synonymy by Weiffenbach (1962).</p><p>Nematus pleuralis Thomson, 1863: 628 . Lectotype designated below. Synonymy by Enslin (1916a).</p><p>Pachynematus pullus Konow, 1903a: 379 (key). Lectotype designated below. Synonymy by Lindqvist (1976).</p><p>Pachynematus falonus Ross, 1945: 108 (key). Holotype ♂ (INHS), not examined. Type locality: Canada, Alberta, Edmonton.</p><p>Pachynematus torridonensis Liston, 1980b: 52–53 . Synonymy by Liston (1995).</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Lectotype  Nematus moerens, here designated</p><p>GERMANY – Nordrhein-Westfalen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.09&amp;materialsCitation.latitude=50.77" title="Search Plazi for locations around (long 6.09/lat 50.77)">Aachen area</a>; 50.77° N, 6.09° E; ZSM, DEI-GISHym88919.</p><p>Notes</p><p>According to Taeger &amp; Blank (1998) the lectotype was designated by Haris (1997), but no such designation was made.</p><p>Lectotype  Nematus pygostolus</p><p>GERMANY – Nordrhein-Westfalen • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.09&amp;materialsCitation.latitude=50.77" title="Search Plazi for locations around (long 6.09/lat 50.77)">Aachen area</a>; 50.77° N, 6.09° E; ZSM, DEI-GISHym12488.</p><p>Lectotype  Nematus pleuralis, here designated</p><p>SWEDEN • ♀; Stockholm; 59.31° N, 18.04° E; C.H. Boheman leg.; NHRS, NHRS-HEVA000006326.</p><p>Lectotype  Pachynematus pullus, here designated</p><p>FRANCE – Champagne-Ardenne • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=4.72&amp;materialsCitation.latitude=49.76" title="Search Plazi for locations around (long 4.72/lat 49.76)">Charleville-Mézières</a>; 49.76° N, 4.72° E; 11 May 1895; SDEI, GBIF-GISHym3882.</p><p>Holotype  Pachynematus torridonensis</p><p>UNITED KINGDOM – Scotland • Wester Ross, Coire MhicNobuil, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-5.56&amp;materialsCitation.latitude=57.57" title="Search Plazi for locations around (long -5.56/lat 57.57)">near Allt Toll a’Mhaidaich</a>; 57.57° N, 5.56° W; 150 m a.s.l.; 16 May 1978; A.D. Liston leg.; RSME.</p><p>Host plants</p><p>Calamagrostis arundinacea (L.) Roth (Kangas 1985),  Poa sp. and  Festuca sp. (Macek et al. 2020).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Holarctic. Specimens studied are from Finland, France, Germany, Norway, Sweden, and the United Kingdom.</p></div>	https://treatment.plazi.org/id/03BCA619FF85D84C9756F97AFEBDF804	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF87D84D975FFEEEFB0AF893.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura obducta (Hartig 1837)	<div><p>145  Euura obducta (Hartig, 1837)</p><p>Figs 145, 382</p><p>Nematus obductus Hartig, 1837: 201–202 . Lectotype designated below.</p><p>Nematus conductus Ruthe, 1859: 305–306 . Lectotype designated below. Synonymy by Konow (1904c).</p><p>Nematus graminis Cameron, 1874: 221–222 . Syntypes ♀♀ (BMNH), not examined. Type localities: United Kingdom, Scotland, Glasgow and Aberdeen areas; England, Saint Albans. Synonymy by Konow (1904c).</p><p>Nematus palliventris Cresson, 1880: 5 . Holotype ♀ (ANSP Type no. 388, ANSP), not examined. Type locality: USA, Nevada.</p><p>Pachynematus boulderensis Rohwer, 1920: 218–219 . Holotype ♀ (USNMENT00778746, USNM, http://n 2t.net/ark:/65665/3a7fb89a5-6012-4196-a47e-01edac6000c2), not examined. Type locality: USA,  Colorada, Boulder.</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Lectotype  Nematus obductus, here designated</p><p>GERMANY [according to the title of Hartig 1837] • ♀; ZMHB, GBIF-GISHym2785.</p><p>Lectotype  Nematus conductus, here designated</p><p>ICELAND • ♀; 1856; Staudinger leg.; ZMHB, dbcac8 / ZMHB, GBIF-GISHym2829.</p><p>Host plants</p><p>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) .</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Holarctic. Specimens studied are from Austria, Canada, Estonia, Finland, France, Germany, Greenland (only genetics), Iceland, Portugal, Sweden, Switzerland, and the United Kingdom.</p></div>	https://treatment.plazi.org/id/03BCA619FF87D84D975FFEEEFB0AF893	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF87D872974DF8A7FC3AFBB5.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura clitellata (Serville 1823) ZMUO.	<div><p>146  Euura clitellata group sp. 1</p><p>Fig. 374</p><p>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 1896a: 91–93, 99–100) ( Pachynematus auratus Marlatt, 1896), but the characters do not seem to fit perfectly. The dominant COI variant belongs to BOLD:ACF0333 (most European  E. clitellata specimens), the second to BOLD:ACM0632 (North America) and the third is closest (2.4%) to BOLD:ABX5515 (North America and some secondary variants of several Finnish specimens of  E. clitellata).</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>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).</p><p>Nuclear</p><p>Only one sequence available. The nearest neighbour, diverging by a minimum of 1.43%, is  Euura moerens .</p><p>Distribution and material examined</p><p>Palaearctic. The studied specimen is from northernmost Finland.</p></div>	https://treatment.plazi.org/id/03BCA619FF87D872974DF8A7FC3AFBB5	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFB8D8739750FB45FB82FD0B.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura epilosa (Lindqvist 1970)	<div><p>148  Euura epilosa (Lindqvist, 1970)</p><p>Figs 147–148</p><p>Pteronidea epilosa Lindqvist, 1970: 102–103 .</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Holotype  Pteronidea epilosa</p><p>RUSSIA – Irkutskaja oblast • ♀; Irkutsk, Oljhonsk, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=106.309&amp;materialsCitation.latitude=52.741" title="Search Plazi for locations around (long 106.309/lat 52.741)">Popovo</a>; 52.741° N, 106.309° E; 22 May 1967; B.N. Verzhutskii leg.; collected from  Spiraea media; MZH, http://id.luomus.fi/GL.5142.</p><p>Notes</p><p>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 &amp; 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 .</p><p>Host plants</p><p>Spiraea media (Verzhutskii 1981) . One generation per year.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Bulgaria, Russia, and Slovakia.</p></div>	https://treatment.plazi.org/id/03BCA619FFB8D8739750FB45FB82FD0B	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFB9D8739792FD4FFE6AFCEE.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura fahraei (Thomson 1863)	<div><p>149  Euura fahraei group</p><p>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).</p></div>	https://treatment.plazi.org/id/03BCA619FFB9D8739792FD4FFE6AFCEE	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFB9D8709751FC6AFE02FE7D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura fahraei (Thomson 1863)	<div><p>150  Euura fahraei (Thomson, 1863)</p><p>Figs 149, 383</p><p>Nematus fahraei Thomson, 1863: 637 [mandatory correction of original spelling  fåhraei]. Lectotype designated below.</p><p>Nematus melanodus Zaddach, 1884 in Brischke 1884: 133. Holotype ♂, probably destroyed (Blank &amp; Taeger 1998). Type locality: Prussia? [leg. Andersch]. Synonymy by Konow (1895).</p><p>Pteronidea brunnea Lindqvist, 1971b: 11 . Secondary homonym of  Nematus brunneus Norton, 1864 [=  Euura brunnea (Norton, 1864)]. Syn. nov.</p><p>Nematus brunnescens Vikberg, 1982: 63 . Replacement name for  Pteronidea brunnea Lindqvist, 1971 .</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Lectotype  Nematus fåhraei, here designated</p><p>SWEDEN – Skåne • ♀; Ringsjön; 55.88° N, 13.51° E; C.G. Thomson leg.; MZLU, MZLU2017305.</p><p>Holotype  Pteronidea brunnea</p><p>FINLAND – Uusimaa • ♀; Espoo, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=24.9&amp;materialsCitation.latitude=60.25" title="Search Plazi for locations around (long 24.9/lat 60.25)">Vantaa</a>; 60.25° N, 24.90° E; 27 May 1967; V.J. Karvonen leg.; MZH, http://id.luomus.fi/GL.3466.</p><p>Host plants</p><p>Populus tremula .</p><p>Genetics</p><p>COI</p><p>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).</p><p>Nuclear</p><p>Based on 2 specimens, maximum within-species distance is 0.05%. The nearest neighbour, diverging by a minimum of 1.46%, is  Euura bicolor .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Bulgaria, Estonia, Finland, Germany, Russia, Sweden, and the United Kingdom.</p></div>	https://treatment.plazi.org/id/03BCA619FFB9D8709751FC6AFE02FE7D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFBAD8719763F8B8FCD2FDB1.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura flavescens (Stephens 1835)	<div><p>152  Euura flavescens group</p><p>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 &amp; 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.</p></div>	https://treatment.plazi.org/id/03BCA619FFBAD8719763F8B8FCD2FDB1	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFBAD870973CFDFDFC7FF8B0.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura tenuiserra (Lindqvist 1944)	<div><p>151  Euura tenuiserra (Lindqvist, 1944)</p><p>Figs 150, 384</p><p>Amauronematus tenuiserra Lindqvist, 1944b: 21–22 .</p><p>Pteronidea semipunctata Lindqvist, 1958: 98 . Syn. nov.</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Holotype  Amauronematus tenuiserra</p><p>RUSSIA – Karelia • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=34.01&amp;materialsCitation.latitude=60.96" title="Search Plazi for locations around (long 34.01/lat 60.96)">Vaaseni</a> [Vaziny]; 60.96° N, 34.01° E; 8 Jun. 1942; V. Karvonen leg.; MZH, http://id.luomus.fi/GL.2772.</p><p>Holotype  Pteronidea semipunctata</p><p>SWEDEN • ♀; Uppland; R. Malaise leg.; NHRS, NHRS-HEVA000004009.</p><p>Host plants</p><p>Salix pentandra .</p><p>Genetics</p><p>COI</p><p>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.</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Russia, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FFBAD870973CFDFDFC7FF8B0	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFBBD8719750FDB9FC10F9BB.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura dorsata (Cameron 1875) PR.	<div><p>153  Euura dorsata (Cameron, 1875)</p><p>Figs 151, 385</p><p>Nematus dorsatus Cameron, 1875: 129–130 . Syntypes ♀♀ (BMNH?), not examined. Type locality: United Kingdom, Scotland, Inverness-shire, Rannoch, and Bishopton.</p><p>Diagnosis</p><p>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 .</p><p>Host plants</p><p>Betula pubescens including  ssp. czerepanovii (N.I.Orlova) Hämet-Ahti.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FFBBD8719750FDB9FC10F9BB	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFBBD8769724F9BEFD7BFC1A.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura elongatula (Lacourt 1996)	<div><p>154  Euura elongatula (Lacourt, 1996)</p><p>Alpinematus elongatulus Lacourt, 1996a: 270–271 .</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Holotype  Alpinematus elongatulus</p><p>FRANCE – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.92&amp;materialsCitation.latitude=44.67" title="Search Plazi for locations around (long 6.92/lat 44.67)">Hautes-Alpes</a> • ♀; 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, DEIGISHym20819.</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>No data.</p><p>Nuclear No data.</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from France.</p></div>	https://treatment.plazi.org/id/03BCA619FFBBD8769724F9BEFD7BFC1A	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFBCD8779720FC5DFD39F882.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura flavescens (Stephens 1835)	<div><p>155  Euura flavescens (Stephens, 1835)</p><p>Figs 166, 386</p><p>Nematus flavescens Stephens, 1835: 29 . Lectotype designated below.</p><p>Nematus testaceus Thomson, 1871: 153–154 . Lectotype designated by Lindqvist (1960c). Synonymy by Cameron (1885). Primary homonym of  Nematus testaceus Stephens, 1835 [=  Euura miliaris (Panzer, 1797)].</p><p>Nematus dilutus Brischke, 1883: 141 . Syntypes ♀ ♂, probably destroyed (Blank &amp; Taeger 1998). Type locality: Russia, Kaliningradskaya oblast, Tschernjachovsk [Insterburg]; Poland, Gdansk [Danzig]; Germany, Rheinland-Pfalz, Herrstein, and Sachsen-Anhalt, Halle. Synonymy by Enslin (1913).</p><p>Pteronidea stichi Enslin, 1913: 321–326 . Replacement name for  Nematus testaceus Thomson, 1871 .</p><p>Pteronidea fulvescens Lindqvist, 1949: 79 . Syn. nov.</p><p>Pteronidea variegata Lindqvist, 1958: 103–104 . Syn. nov.</p><p>Pteronidea boreophila Lindqvist, 1971b: 12–13 . Syn. nov.</p><p>Diagnosis</p><p>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).</p><p>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 &amp; 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 .</p><p>Type material examined</p><p>Lectotype  Nematus flavescens, here designated</p><p>UNITED KINGDOM – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-0.0&amp;materialsCitation.latitude=51.0" title="Search Plazi for locations around (long -0.0/lat 51.0)">England</a> • ♀; London area; 51° N, 0° W; BMNH, B.M.TYPE HYM. 1.631.</p><p>Lectotype  Nematus testaceus</p><p>SCANDINAVIA • ♀; MZLU, MZLU2017331.</p><p>Holotype  Pteronidea fulvescens</p><p>RUSSIA – Karelia • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=34.011&amp;materialsCitation.latitude=62.126" title="Search Plazi for locations around (long 34.011/lat 62.126)">Kenjärvi</a>; 62.126° N, 34.011° E; 4 Jul. 1942; E. Kangas leg.; MZH, http://id.luomus.fi/GL.3500.</p><p>Notes</p><p>~ 8 mm. Best morphological match: DEI-GISHym21140 (~7.0 mm).</p><p>Holotype  Pteronidea variegata</p><p>FINLAND – Uusimaa • ♀; Helsinki, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=24.89&amp;materialsCitation.latitude=60.22" title="Search Plazi for locations around (long 24.89/lat 60.22)">Munksnäs</a> [Munkkiniemi]; 60.22° N, 24.89° E; 23 Jun. 1932; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.3559.</p><p>Holotype  Pteronidea boreophila</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=20.81&amp;materialsCitation.latitude=69.04" title="Search Plazi for locations around (long 20.81/lat 69.04)">Lapin Lääni</a> • ♀; Kilpisjärvi; 69.04° N, 20.81° E; 8 Jul. 1966; Karvonen leg.; MZH, http://id.luomus.fi/GL.3457.</p><p>Notes</p><p>Best morphological match: ZMUO.030845 (somewhat paler and slightly larger).</p><p>Host plants</p><p>Several different  Salix spp., such as  S. caprea L.,  S. phylicifolia,  S. myrsinifolia Salisb. (Kangas 1985) and  S. viminalis (Weiffenbach 1985) .</p><p>Genetics</p><p>COI</p><p>Based on 27 specimens, maximum within-species distance is 1.82% and the nearest neighbour, diverging by a minimum of 0%, is  Euura lienterica .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Austria, Belgium, Bulgaria, Estonia, Finland, France, Norway, Russia, Sweden, and the United Kingdom.</p></div>	https://treatment.plazi.org/id/03BCA619FFBCD8779720FC5DFD39F882	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFBDD8749728F8D4FD75FA18.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura latibasis (Lindqvist 1949)	<div><p>156  Euura latibasis (Lindqvist, 1949)</p><p>Figs 152, 387</p><p>Pteronidea latibasis Lindqvist, 1949: 77–79 .</p><p>Diagnosis</p><p>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).</p><p>Type material examined</p><p>Holotype  Pteronidea latibasis</p><p>FINLAND – Varsinais-Suomi • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=22.301&amp;materialsCitation.latitude=60.305" title="Search Plazi for locations around (long 22.301/lat 60.305)">Pargas</a> (Parainen); 60.305° N, 22.301° E; leg. E. Reuter leg,; MZH, http://id.luomus.fi/GL.3505.</p><p>Notes</p><p>Best morphological fit: ZMUO.035649.</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland.</p></div>	https://treatment.plazi.org/id/03BCA619FFBDD8749728F8D4FD75FA18	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFBED87B973EFA50FBE8FED8.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura lienterica (Holmgren 1883)	<div><p>157  Euura lienterica (Holmgren, 1883)</p><p>Figs 160–162, 164–165, 388</p><p>Nematus lientericus Holmgren, 1883: 146, pl. 2 fig. 9. Lectotype designated below.</p><p>Nematus parvulus Holmgren, 1883: 146–147, pl. 2 fig. 11. Lectotype designated below. Synonymy by Lindqvist (1944a).</p><p>Pontania tenuitarsis Konow, 1901b: 84 (key). Lectotype designated below. Syn. nov.</p><p>Amauronematus alberich Benson, 1934: 208–211 . Syn. nov.</p><p>Pteronidea vaccinii Lindqvist, 1964: 128–129 . Syn. nov.</p><p>Pteronidea facialis Lindqvist, 1969: 234, 237. Syn. nov.</p><p>Pteronidea carinata Lindqvist, 1969: 238–239 . Syn. nov.</p><p>Nematus carinalis Vikberg, 1982: 63 . Replacement name for  Pteronidea carinata Lindqvist, 1969 .</p><p>Diagnosis</p><p>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).</p><p>Female</p><p>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.</p><p>Male</p><p>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.</p><p>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.603VV, 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.</p><p>Type material examined</p><p>Lectotype  Nematus lientericus, here designated</p><p>RUSSIA – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=55.6&amp;materialsCitation.latitude=73.3" title="Search Plazi for locations around (long 55.6/lat 73.3)">Novaja Zemlya</a> • ♀; Matotschkin Scharr [Matochkin Strait]; 73.3° N, 55.6° E; 1875; NHRS, NHRS-HEVA000006473.</p><p>Notes</p><p>Best morphological fit: DEI-GISHym21408.</p><p>Lectotype  Nematus parvulus, here designated</p><p>RUSSIA – Nenets Autonomous Okrug • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=59.674&amp;materialsCitation.latitude=69.97" title="Search Plazi for locations around (long 59.674/lat 69.97)">Vaygach Island</a>; 69.970° N, 59.674° E; 1875; NHRS, NHRS-HEVA000006479.</p><p>Paralectotype  Nematus parvulus</p><p>RUSSIA – Nenets Autonomous Okrug • 1 ♀; same data as for lectotype; NHRS, NHRS-HEVA000006478 .</p><p>Notes</p><p>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-GISHym12558.</p><p>Lectotype  Pontania tenuitarsis, here designated</p><p>NORWAY – Troms • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=16.08&amp;materialsCitation.latitude=68.204" title="Search Plazi for locations around (long 16.08/lat 68.204)">Tysfjorden</a>; 68.204° N, 16.080° E; E. Strand leg.; SDEI, GBIF-GISHym3867.</p><p>Notes</p><p>18–19 serrulae.</p><p>Holotype  Amauronematus alberich</p><p>NORWAY – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=19.04&amp;materialsCitation.latitude=74.441" title="Search Plazi for locations around (long 19.04/lat 74.441)">Bear Island</a> (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.</p><p>Holotype  Pteronidea vaccinii</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=24.272&amp;materialsCitation.latitude=61.335" title="Search Plazi for locations around (long 24.272/lat 61.335)">Häme</a> • ♀; Pälkäne; 61.335° N, 24.272° E; 7 Jun. 1963; J. Kangas leg.; MZH, http://id.luomus.fi/GL.3597.</p><p>Notes</p><p>18 serrulae, 5 mm. Head shape most similar to DEI-GISHym21408.</p><p>Holotype  Pteronidea facialis</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=27.031&amp;materialsCitation.latitude=68.911" title="Search Plazi for locations around (long 27.031/lat 68.911)">Inari Lapland</a> • ♀; Inari; 68.911° N, 27.031° E; 2 Jul. 1965; V.J. Karvonen leg.; MZH, http://id.luomus.fi/GL.3564.</p><p>Notes</p><p>6.5 mm.</p><p>Holotype  Pteronidea carinata</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=20.81&amp;materialsCitation.latitude=69.04" title="Search Plazi for locations around (long 20.81/lat 69.04)">Lapin Lääni</a> • ♀; Kilpisjärvi; 69.04° N, 20.81° E; 5 Jul. 1950; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.3568.</p><p>Notes</p><p>5.5 mm.</p><p>Host plants</p><p>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-GISHym12555) 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.</p><p>Genetics</p><p>COI</p><p>Based on 31 specimens, maximum within-species distance is 1.82% and the nearest neighbour, diverging by a minimum of 0%, is  Euura flavescens .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Norway, Russia, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FFBED87B973EFA50FBE8FED8	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFB1D87B9720FE9FFD75F9DE.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura pallidinervis (Hellen 1951)	<div><p>158  Euura pallidinervis (Hellén, 1951)</p><p>Fig. 156</p><p>Pteronidea pallidinervis Hellén, 1951b: 108–109 .</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Syntype  Pteronidea pallidinervis</p><p>RUSSIA – Karelia • ♀; Kestenga, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=30.067&amp;materialsCitation.latitude=66.323" title="Search Plazi for locations around (long 30.067/lat 66.323)">Mäntytunturi</a>; 66.323° N, 30.067° E; 28 Jun. 1935; G.J. Kerrich leg.; MZH, http://id.luomus.fi/GL.3516  .</p><p>Notes</p><p>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).</p><p>Possible syntype  Pteronidea pallidinervis</p><p>FINLAND – Inari Lapland • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=27.03&amp;materialsCitation.latitude=69.91" title="Search Plazi for locations around (long 27.03/lat 69.91)">Utsjoki</a>; 69.91° N, 27.03° E; W. Hellén leg.; MZH, http://id.luomus. fi/GP.110177  .</p><p>Host plants</p><p>Unknown. One of the type specimens was collected from  Betula nana (Hellén 1951b) .</p><p>Genetics</p><p>COI</p><p>No data.</p><p>Nuclear No data.</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland.</p></div>	https://treatment.plazi.org/id/03BCA619FFB1D87B9720FE9FFD75F9DE	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFB1D8789758F999FD75FCE6.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura pallidior (Hellen 1970)	<div><p>159  Euura pallidior (Hellén, 1970)</p><p>Fig. 153</p><p>Amauronematus pallidior Hellén, 1970: 15–16 .</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Holotype  Amauronematus pallidior</p><p>RUSSIA – Karelia • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=30.1&amp;materialsCitation.latitude=66.3" title="Search Plazi for locations around (long 30.1/lat 66.3)">Paanajärvi</a>; 66.3° N, 30.1° E; 200 m a.s.l.; 16 Jun. 1917; R. Frey leg.; MZH, http://id.luomus.fi/GL.2752.</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>No data.</p><p>Nuclear No data.</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland.</p></div>	https://treatment.plazi.org/id/03BCA619FFB1D8789758F999FD75FCE6	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFB2D8799741FC71FAFDFCF3.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura pravus (Konow 1895)	<div><p>160  Euura pravus (Konow, 1895)</p><p>Figs 154, 389</p><p>Amauronematus pravus Konow, 1895: 176–177 . Lectotype designated by Muche (1975).  Amauronematus torneensis Malaise, 1921b: 123–124 . Lectotype designated below. Syn. nov.</p><p>Diagnosis</p><p>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).</p><p>Female</p><p>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).</p><p>Male</p><p>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.</p><p>Type material examined</p><p>Lectotype  Amauronematus pravus</p><p>ESTONIA • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=26.721&amp;materialsCitation.latitude=58.372" title="Search Plazi for locations around (long 26.721/lat 58.372)">Dorpat</a> [Tartu]; 58.372° N, 26.721° E; SDEI, GBIF-GISHym3866.</p><p>Lectotype  Amauronematus torneensis, here designated</p><p>SWEDEN – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=19.74&amp;materialsCitation.latitude=68.22" title="Search Plazi for locations around (long 19.74/lat 68.22)">Torne Lappmark</a> • ♀; Torneträsk; 68.22° N, 19.74° E; 400 m a.s.l.; R. Malaise leg.; NHRS, NHRS-HEVA000003944.</p><p>Host plants</p><p>Betula pubescens (Tenow 1963),  B. nana (Vikberg 1982) .</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Holarctic. Specimens studied are from Canada (only genetics), Estonia, Finland, Norway, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FFB2D8799741FC71FAFDFCF3	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFB3D879975DFC47FD59F86F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura renei (Lindqvist 1958)	<div><p>161  Euura renei (Lindqvist, 1958)</p><p>Fig. 157</p><p>Pteronidea renéi Lindqvist, 1958: 104 . Holotype ♀ not found in NHRS. Type locality: Sweden,  Torne Lappmark, Torneträsk. DEI-GISHym12067 is almost identical to a paratype http://id.luomus.fi/GL.5235.</p><p>Diagnosis</p><p>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.</p><p>Host plants</p><p>Perhaps  Salix lapponum, if the reared specimen PR.607 VV is conspecific with DEI-GISHym12067.</p><p>Genetics</p><p>COI</p><p>Only one sequence available. The nearest neighbour, diverging by a minimum of 0.15%, is  Euura flavescens .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland (if the specimen PR.607VV reared from  Salix lapponum is correctly identified), Norway, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FFB3D879975DFC47FD59F86F	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFB4D87C973FFEEEFAE8FC98.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura reticulata (Holmgren 1883)	<div><p>162  Euura reticulata (Holmgren, 1883)</p><p>Figs 159, 390</p><p>Nematus arcticus Thomson, 1871: 134 . Lectotype designated below. Synonymy by Lindqvist (1954). Primary homonym of  Nematus arcticus Holmgren, 1869 [ Euura villosa (Thomson, 1863)].</p><p>Nematus reticulatus Holmgren, 1883: 143, pl. 1 fig. 2. Lectotype designated below.</p><p>Nematus morionellus Holmgren, 1883: 144, pl. 1 fig. 3. Lectotype designated below. Synonymy by Lindqvist (1944a).</p><p>Nematus mysticus Holmgren, 1883: 145, pl. 1 fig. 7. Lectotype designated below. Synonymy by Lindqvist (1944a).</p><p>Nematus anceps Holmgren, 1883: 145, pl. 1 fig. 6. Lectotype designated below. Synonymy by Lindqvist (1967a).</p><p>Nematus occipitalis Holmgren, 1883: 144, pl. 1 fig. 4. Lectotype designated below. Synonymy by Lindqvist (1967a).</p><p>Nematus picticollis Holmgren, 1883: 147, pl. 1 fig. 13a–b. Syntypes ♀♀ (NHRS), not examined. Type locality: Russia, Novaja Zemlya, Matotschkin Scharr. Synonymy by Lindqvist (1944a).</p><p>Nematus arcticola Dalla Torre, 1894: 207 . Replacement name for  Nematus arcticus Thomson, 1871 .</p><p>Pontania popofiana Kincaid, 1900: 353 . Syntypes (10 ♀♀, 6 ♂♂) (USNMENT00778201, USNM, http://n 2t.net/ark:/65665/3240d29be-a367-4853-a1ce-76ecf6dfc128), not examined. Type locality: USA, Alaska, East Aleutians, Popof Island.</p><p>Pontania glinka Kincaid, 1900: 355–356 . Lectotype ♀ (USNMENT00778180, USNM, http://n 2t.net/ark:/65665/33b04de0e-ef1d-451c-8c05-35cddd9ef1cc), not examined. Type locality: USA, Alaska, East Aleutians,  Popof Island .</p><p>Pontania forsiusi Enslin, 1915: 354–355 . Synonymy by Benson (1961b).</p><p>Amauronematus arcticola Enslin, 1915: 388–389 . Replacement name for  Nematus arcticus Thomson, 1871 . Secondary homonym of  Nematus arcticola Dalla Torre, 1894 [=  Euura reticulata (Holmgren, 1883)].</p><p>Amauronematus alsius Benson, 1935: 31–33 . Synonymy by Benson (1961b).</p><p>Diagnosis</p><p>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.</p><p>Female</p><p>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.</p><p>Male</p><p>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.</p><p>Type material examined</p><p>Lectotype  Nematus arcticus, here designated</p><p>SWEDEN • ♀; Dalarna alpina; C.H. Boheman leg.; MZLU, MZLU2017307 . Lectotype  Nematus reticulatus, here designated</p><p>RUSSIA – Novaja Zemlya • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=55.6&amp;materialsCitation.latitude=73.3" title="Search Plazi for locations around (long 55.6/lat 73.3)">Matotschkin Scharr</a> [Matochkin Strait]; 73.3° N, 55.6° E; 1875; NHRS, NHRS-HEVA000006452  .</p><p>Paralectotypes  Nematus reticulatus</p><p>RUSSIA – Novaja Zemlya • 3 ♀♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=55.6&amp;materialsCitation.latitude=73.3" title="Search Plazi for locations around (long 55.6/lat 73.3)">Matotschkin Scharr</a> [Matochkin Strait]; 73.3° N, 55.6° E; 1875; NHRS, NHRS-HEVA000006448 to NHRS-HEVA000006450  .</p><p>Notes</p><p>Heads of the lectotype and paralectotype HEVA000006450 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.</p><p>Lectotype  Nematus morionellus, here designated</p><p>RUSSIA – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=55.6&amp;materialsCitation.latitude=73.3" title="Search Plazi for locations around (long 55.6/lat 73.3)">Novaja Zemlya</a> • ♀; Matotschkin Scharr [Matochkin Strait]; 73.3° N, 55.6° E; 1875; NHRS, NHRS-HEVA000006451.</p><p>Notes</p><p>This is a very dark specimen of  E. reticulata (lancet; identified as such) or  E. lienterica (head) (antenna missing).</p><p>Lectotype  Nematus mysticus, here designated</p><p>RUSSIA – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=53.59&amp;materialsCitation.latitude=72.86" title="Search Plazi for locations around (long 53.59/lat 72.86)">Novaja Zemlya</a> • ♀; Besimannija bay [Bezimyannaya Bay]; 72.86° N, 53.59° E; 1875; NHRS, NHRS-HEVA000006471</p><p>Lectotype  Nematus anceps, here designated</p><p>RUSSIA • ♀;  Novaja Zemlya; 1875; NHRS, NHRS-HEVA000006467.</p><p>Notes</p><p>Rather dark (e.g., mesepisternum). Lancet looks more like  E. reticulata and mesepisternum seems matt, but the head looks more like  E. lienterica .</p><p>Lectotype  Nematus occipitalis, here designated</p><p>RUSSIA • ♀;  Novaja Zemlya; 1875; NHRS, NHRS-HEVA000006453.</p><p>Notes</p><p>It is not clear whether this specimen belongs to  E. reticulata or  E. lienterica .</p><p>Holotype  Pontania forsiusi</p><p>FINLAND – Fjell-Lappland • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=25.0&amp;materialsCitation.latitude=67.7" title="Search Plazi for locations around (long 25.0/lat 67.7)">Kittilä</a>; 67.7° N, 25.0° E; R. Krogerus leg.; ZSM, GBIF-GISHym3284.</p><p>Holotype  Amauronematus alsius</p><p>UNITED KINGDOM – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-3.69&amp;materialsCitation.latitude=57.09" title="Search Plazi for locations around (long -3.69/lat 57.09)">Scotland</a> • 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.</p><p>Host plants</p><p>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.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Norway, Russia, Sweden, and the United Kingdom.</p></div>	https://treatment.plazi.org/id/03BCA619FFB4D87C973FFEEEFAE8FC98	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFB6D87C9732FCDFFC10F859.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura seriepunctata (Malaise 1921) ZMUO.	<div><p>163  Euura seriepunctata (Malaise, 1921)</p><p>Figs 155, 391</p><p>Pteronidea seriepunctata Malaise, 1921a: 6–7 . Lectotype designated below.</p><p>Diagnosis</p><p>Female</p><p>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.</p><p>Male.</p><p>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.</p><p>Type material examined</p><p>Lectotype  Pteronidea seriepunctata, here designated</p><p>SWEDEN – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=19.74&amp;materialsCitation.latitude=68.22" title="Search Plazi for locations around (long 19.74/lat 68.22)">Torne Lappmark</a> • ♀; Torneträsk; 68.22° N, 19.74° E; 400 m a.s.l.; R. Malaise; NHRS, NHRS-HEVA000003963.</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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.</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FFB6D87C9732FCDFFC10F859	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFB7D87D9735FEEFFB8DFAF6.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura squamicauda (Vikberg 1982)	<div><p>164  Euura squamicauda (Vikberg, 1982)</p><p>Figs 167, 392</p><p>Pteronidea caudalis Lindqvist, 1968: 194 . Secondary homonym of  Nematus caudalis Eversmann, 1847 [=  Euura leucotrocha (Hartig, 1837)].</p><p>Nematus squamicauda Vikberg, 1982: 63 . Replacement name for  Pteronidea caudalis Lindqvist, 1968 .</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Holotype  Pteronidea caudalis</p><p>SWEDEN – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=19.74&amp;materialsCitation.latitude=68.22" title="Search Plazi for locations around (long 19.74/lat 68.22)">Torne Lappmark</a> • ♀; Torneträsk; 68.22° N, 19.74° E; 400 m a.s.l.; R. Malaise leg.; NHRS, NHRS-HEVA000003965.</p><p>Host plants</p><p>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.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Norway, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FFB7D87D9735FEEFFB8DFAF6	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFB7D8609704FA41FD75F93D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura serela Prous & Liston & Monckton & Kramp & Vårdal & Vikberg & Heibo & Mutanen 2025	<div><p>165  Euura serela Prous &amp; Mutanen sp. nov.</p><p>urn:lsid:zoobank.org:act: B19DC2EB-4225-4287-B14D-E71F41C0A562</p><p>Figs 81–82, 158, 393</p><p>Diagnosis</p><p>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.</p><p>Etymology</p><p>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).</p><p>Type material</p><p>Holotype</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=27.065&amp;materialsCitation.latitude=69.877" title="Search Plazi for locations around (long 27.065/lat 69.877)">Inari Lapland</a> • ♀; Utsjoki, Ailegas; 69.877° N, 27.065° E; 6 Jul. 2018; M. Mutanen, N. Mutanen and A. Mutanen leg.; ZMUO, ZMUO.035752.</p><p>Paratype</p><p>FINLAND – Lapin Lääni • 1 ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=23.859&amp;materialsCitation.latitude=68.673" title="Search Plazi for locations around (long 23.859/lat 68.673)">Pöyrisjärvi</a>; 68.673° N, 23.859° E; 17 Jul. 2015; M. Mutanen leg.; ZMUO, ZMUO.028330  .</p><p>Description</p><p>Female holotype (ZMUO.035752)</p><p>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.</p><p>Male paratype (ZMUO.028330)</p><p>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.</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>Specimens belong to BOLD:ADD3400. 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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland.</p></div>	https://treatment.plazi.org/id/03BCA619FFB7D8609704FA41FD75F93D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFAAD860976DF93DFD43F856.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura gregaria (Marlatt 1896)	<div><p>166  Euura gregaria group</p><p>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 &amp; 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).</p></div>	https://treatment.plazi.org/id/03BCA619FFAAD860976DF93DFD43F856	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFABD8669754FEEEFC2BFDB2.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura gregaria (Marlatt 1896)	<div><p>167  Euura gregaria (Marlatt, 1896)</p><p>Figs 188, 417</p><p>Pachynematus gregarius Marlatt, 1896b: 256–257 . Syntypes 1 ♀ 1 ♂ (USNM), not examined. Type localities: USA, New Hampshire and New Jersey.</p><p>Pontania decrepita MacGillivray, 1921b: 33 . Syntype ♀, not examined. Type locality: USA, New York, Ithaca.</p><p>Pachnematus [sic!] rarus MacGillivray, 1921b: 30–31 . Syntype ♀, not examined. Type locality: USA, Maine, Orono.</p><p>Pachynematus dentatus Lindqvist, 1937: 132–135 . Lectotype designated below. Syn. nov.</p><p>Diagnosis</p><p>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 EF1a F2), corresponding to an average haplotype divergence for  Euura female individuals.</p><p>Female</p><p>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.</p><p>Male</p><p>3.0– 4.5 mm. Differences from female: similar to female, but sometimes also the mesepisternum is pale and partly the abdomen dorsally.</p><p>Type material examined</p><p>Lectotype  Pachynematus dentatus, here designated</p><p>FINLAND – Uusimaa • ♀; Helsinki, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=24.89&amp;materialsCitation.latitude=60.22" title="Search Plazi for locations around (long 24.89/lat 60.22)">Munksnäs</a> [Munkkiniemi]; 60.22° N, 24.89° E; 28 Jul. 1937; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.2443.</p><p>Host plants</p><p>Salix phylicifolia (Lindqvist 1937),  S. myrsinifolia,  S. pentandra .</p><p>Genetics</p><p>COI</p><p>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 (E4) is 2.1–5.2% different from the European specimens (based on 420–423 bp of overlapping barcoding region).</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, and the USA.</p></div>	https://treatment.plazi.org/id/03BCA619FFABD8669754FEEEFC2BFDB2	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFACD866975CFD86FCCCFBD4.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura melanocephalus (Hartig 1837)	<div><p>168  Euura melanocephalus group</p><p>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.</p></div>	https://treatment.plazi.org/id/03BCA619FFACD866975CFD86FCCCFBD4	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFACD867973EFB64FBD4FB12.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura bohemani (Thomson 1871)	<div><p>169  Euura bohemani (Thomson, 1871)</p><p>Figs 189, 418</p><p>Nematus bohemani Thomson, 1871: 143 . Lectotype designated below.</p><p>Pteronidea pseudonotabilis Enslin, 1916a: 417–418 . Lectotype designated below. Synonymy by Lindqvist (1954).</p><p>Pteronidea pseudonotabilis var. simplex Forsius, 1921: 28 . Syntypes ♀♀ (MZH?), not examined. Type locality: southern Finland. Synonymy by Taeger et al. (2010).</p><p>Pteronidea pseudonotabilis var. t-magnum Malaise, 1931b: 51. Lectotype designated below. Synonymy by Taeger et al. (2010).</p><p>Pteronidea fuscinervis Lindqvist, 1959c: 54–56 . Synonymy by Hellén (1976).</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Lectotype  Nematus bohemani, here designated</p><p>SWEDEN • ♀; Lapponia Media [ central Lapland]; C.H. Boheman leg.; MZLU, MZLU2017315.  Lectotype  Pteronidea pseudonotabilis, here designated</p><p>FINLAND – Uusimaa • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=23.723&amp;materialsCitation.latitude=60.243" title="Search Plazi for locations around (long 23.723/lat 60.243)">Karislojo</a> [Karjalohja]; 60.243° N, 23.723° E; R. Forsius leg.; ZSM, GBIFGISHym3389  .</p><p>Lectotype  Pteronidea pseudonotabilis var. t-magnum, here designated</p><p>RUSSIA • ♀; Kamchatka oblast; R. Malaise leg.; NHRS, NHRS-HEVA000003996 .</p><p>Holotype  Pteronidea fuscinervis</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=24.272&amp;materialsCitation.latitude=61.335" title="Search Plazi for locations around (long 24.272/lat 61.335)">Häme</a> • ♀; Pälkäne; 61.335° N, 24.272° E; 15 Jun. 1958; J. Kangas leg.; MZH, http://id.luomus.fi/GL.3429.</p><p>Hosts plants</p><p>Salix spp., including  S. caprea,  S. fragilis,  S. pentandra,  S. phylicifolia L. (Kangas 1985),  S. myrsinifolia (Kontuniemi 1960) .</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>Only one sequence is available. The nearest neighbour, diverging by a minimum of 0.83%, is  Euura ferruginea .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Estonia, Finland, Russia, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FFACD867973EFB64FBD4FB12	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFADD8649737FB24FC2EF9A8.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura cadderensis (Cameron 1875) ZMUO.	<div><p>170  Euura cadderensis (Cameron, 1875)</p><p>Figs 190, 419</p><p>Nematus cadderensis Cameron, 1875: 127–129 . Syntypes ♀♀ ♂♂ (BMNH?), not examined. Type locality: United Kingdom, Scotland; Glasgow area, Rannoch and Kingussie. Both  Salix cinerea and  Betula are mentioned as host plants.</p><p>Amauronematus moricei Konow, 1902a: 388–389 . Lectotype designated below. Syn. nov.</p><p>Pteronidea macroserrata Lindqvist, 1943: 105–107 . Lectotype designated below. Synonymy by Lindqvist (1960c).</p><p>Pteronidea nuortevai Lindqvist, 1958: 96–97 . Syn. nov.</p><p>Diagnosis</p><p>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.</p><p>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.</p><p>Type material examined</p><p>Lectotype  Amauronematus moricei, here designated</p><p>GERMANY – Brandenburg • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=13.03&amp;materialsCitation.latitude=52.56" title="Search Plazi for locations around (long 13.03/lat 52.56)">Finkenkrug</a>; 52.56° N, 13.03° E; 30 m a.s.l.; SDEI, GBIF-GISHym4745.</p><p>Lectotype  Pteronidea macroserrata, here designated</p><p>GERMANY – Brandenburg • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=13.03&amp;materialsCitation.latitude=52.56" title="Search Plazi for locations around (long 13.03/lat 52.56)">Finkenkrug</a>; 52.56° N, 13.03° E; 30 m a.s.l.; SDEI, GBIF-GISHym4745.</p><p>Notes</p><p>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) .</p><p>Holotype  Pteronidea nuortevai</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=24.13&amp;materialsCitation.latitude=60.95" title="Search Plazi for locations around (long 24.13/lat 60.95)">Häme</a> • ♀; Vuohiniemi; 60.95° N, 24.13° E; 29 Jul. 1948; P. Nuorteva leg.; MZH, http://id.luomus.fi/GL.3440.</p><p>Notes</p><p>Completely pale and with prominent serrulae.</p><p>Host plants</p><p>Betula pubescens . According to some specialists only  Betula spp., but others state that  Salix spp. are host plants (e.g., Kontuniemi 1960; Kangas 1985).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, and Germany.</p></div>	https://treatment.plazi.org/id/03BCA619FFADD8649737FB24FC2EF9A8	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFAED865972BF9AFFE40F9F7.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura ferruginea (Forster 1854)	<div><p>171  Euura ferruginea (Förster, 1854)</p><p>Figs 191, 420</p><p>Nematus ferrugineus Förster, 1854a: 282–283 . Lectotype designated below.</p><p>Nematus glottianus Cameron, 1882: 536–537 . Syntypes ♀♀ (BMNH?), not examined. Type locality: United Kingdom, Scotland, near Port Glasgow. Synonymy by Enslin (1916a).</p><p>Amauronematus morawitzi Jakowlew, 1891: 24–25 . Syn. nov.</p><p>Pteronidea ferruginea var. plagiata Enslin, 1916a: 451 . Lectotype designated below. Synonymy by Lacourt (1999).</p><p>Pteronidea maculifrons Lindqvist, 1960c: 2–3 . Syn. nov.</p><p>Nematus majusculus Lacourt, 1991: 70–71 . Holotype not examined; paratype with same data examined. Syn. nov.</p><p>Diagnosis</p><p>Possibly not morphologically distinguishable from  E. cadderensis: see details under that species.</p><p>Type material examined</p><p>Lectotype  Nematus ferrugineus, here designated</p><p>BELGIUM • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=5.6&amp;materialsCitation.latitude=50.6" title="Search Plazi for locations around (long 5.6/lat 50.6)">Liège</a>; 50.6° N, 5.6° E; ZSM, GBIF-GISHym3276.</p><p>Holotype  Amauronematus morawitzi</p><p>RUSSIA – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=30.4&amp;materialsCitation.latitude=59.9" title="Search Plazi for locations around (long 30.4/lat 59.9)">Leningradskaya oblast</a> • ♀; St Petersburg; 59.9° N, 30.4° E; F. Morawitz leg.; ZIN, DEIGISHym30175.</p><p>Lectotype  Pteronidea ferruginea var. plagiata, here designated</p><p>FINLAND – Uusimaa • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=23.723&amp;materialsCitation.latitude=60.243" title="Search Plazi for locations around (long 23.723/lat 60.243)">Karislojo</a> [Karjalohja]; 60.243° N, 23.723° E; R. Forsius leg.; ZSM, GBIFGISHym3379  .</p><p>Holotype  Pteronidea maculifrons</p><p>FINLAND – Central Finland • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=25.55&amp;materialsCitation.latitude=63.36" title="Search Plazi for locations around (long 25.55/lat 63.36)">Pihtipudas</a>; 63.36° N, 25.55° E; 8–9 Jun. 1946; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.3432.</p><p>Paratype  Nematus majusculus</p><p>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, DEIGISHym12673 .</p><p>Host plants</p><p>Salix spp., including  S. lapponum according to an ex larva rearing by TN.</p><p>Genetics</p><p>COI</p><p>Based on 9 specimens, maximum within-species distance is 3.65% and the nearest neighbour, diverging by a minimum of 0%, is  Euura cadderensis .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Belgium, Estonia, Finland, France, Germany, Norway, Russia, Slovakia, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FFAED865972BF9AFFE40F9F7	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFAFD86A972DF942FD75FB83.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura kangasi (Lindqvist 1964) ZMUO.	<div><p>172  Euura kangasi (Lindqvist, 1964)</p><p>Figs 192, 421</p><p>Pteronidea kangasi Lindqvist, 1964: 124–127 .</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Holotype  Pteronidea kangasi</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=24.272&amp;materialsCitation.latitude=61.335" title="Search Plazi for locations around (long 24.272/lat 61.335)">Häme</a> • ♀; 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.</p><p>Host plants</p><p>Salix pentandra (Lindqvist 1964),  S. fragilis,  S. myrsinifolia,  S. phylicifolia .</p><p>Genetics</p><p>COI</p><p>Based on 3 specimens, maximum within-species distance is 0% and the nearest neighbour, diverging by a minimum of 0%, is  Euura cadderensis .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland.</p></div>	https://treatment.plazi.org/id/03BCA619FFAFD86A972DF942FD75FB83	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFA0D86B970AFBD6FBF6FA08.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura melanocephalus (Hartig 1837)	<div><p>173  Euura melanocephalus (Hartig, 1837)</p><p>Figs 193, 422</p><p>Tenthredo salicis Retzius, 1783: 72 . Described by indication on Degeer (1771: pl. 37 figs 12–22). Syntypes ♀ ♂ and larvae [probably lost / destroyed]. Type locality: Sweden. Primary homonym of  Tenthredo salicis Linnaeus, 1758 [=  Euura salicis (Linnaeus, 1758)].</p><p>Nematus melanocephalus Hartig, 1837: 219 . Described based on the German translation by Götze (1779) of Degeer (1771). Syntypes ♀ ♂ and larvae [probably lost /destroyed]. Type locality: Sweden.</p><p>Nematus perspicillaris Hartig, 1840: 24 . Lectotype designated below. Synonymy by Kriechbaumer (1884).</p><p>Nematus pyrrhonotus Zaddach, 1883 in Brischke 1883: 130–131. Syntypes ♀♀ (NMW), not examined. Type locality: Austria, Vienna area. Synonymy by Konow (1905b) with  Pteronus dimidiatus Konow nec Lepeletier [ E. melanocephalus].</p><p>Pteronus xanthostomus Rohwer, 1910: 91 . Lectotype designated below. Synonymy by Liston et al. (2006).</p><p>Pteronidea melanocephala var. mesothoracica Enslin, 1916a: 414 . Syntypes ♂♂. Types have not been located. Type locality: not stated. Synonymy by Lacourt (1999).</p><p>Diagnosis</p><p>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.</p><p>Mostly pale, pterostigma black, claws bifid, valvula 3 rather broad, hardly tapered, and with small invagination posteriorly.</p><p>Type material examined</p><p>Lectotype  Nematus perspicillaris, here designated</p><p>GERMANY • ♀;  northern Germany [according to Hartig 1840: 22]; ZSM, DEI-GISHym 3377.</p><p>Lectotype  Pteronus xanthostomus, here designated</p><p>NETHERLANDS – Noord-Brabant • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=5.7&amp;materialsCitation.latitude=51.56" title="Search Plazi for locations around (long 5.7/lat 51.56)">Gemert</a>; 51.56° N, 5.70° E; USNM, USNMENT00779592, http://n 2t.net/ark:/65665/3eaf2ca2a-e822-48ff-ad47-f5aefe11b4f9.</p><p>Notes</p><p>Liston et al. (2006) incorrectly wrote that USNMENT00779592 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.</p><p>Host plants</p><p>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).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>Based on 1774 bp of NaK and EF1a F2, only one specimen available. The nearest neighbour, diverging by a minimum of 0.39%, is  Euura kangasi .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Austria, Belgium, Finland, and Germany.</p></div>	https://treatment.plazi.org/id/03BCA619FFA0D86B970AFBD6FBF6FA08	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFA1D86B9790FA4FFEBFF93D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura miliaris (Panzer 1797) PR.	<div><p>174  Euura miliaris group</p><p>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.</p></div>	https://treatment.plazi.org/id/03BCA619FFA1D86B9790FA4FFEBFF93D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFA1D8689748F93CFD0AFB9D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura fagi (Zaddach 1876)	<div><p>175  Euura fagi (Zaddach, 1876)</p><p>Figs 194, 545</p><p>Nematus fagi Zaddach, 1876: Taf. II, 1. Holotype ♀, probably destroyed (Blank &amp; Taeger 1998). Type locality: Poland, Gdansk [Danzig], Jäschkenthale.</p><p>Diagnosis</p><p>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-GISHym13853) 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).</p><p>Host plants</p><p>Fagus sylvatica L.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>Only one sequence available, a female with haplotypes diverging by 0%. The nearest neighbour, diverging by a minimum of 1.18%, is  Euura miliaris .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Czech Republic, Finland, Germany, Slovenia, Sweden, Switzerland, and the United Kingdom.</p></div>	https://treatment.plazi.org/id/03BCA619FFA1D8689748F93CFD0AFB9D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFA2D869975CFBDCFDA5FAB5.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura miliaris (Panzer 1797) PR.	<div><p>176  Euura miliaris (Panzer, 1797)</p><p>Figs 195, 423</p><p>Tenthredo miliaris Panzer, 1797: 45:13 . Holotype ♀, probably lost or destroyed. Type locality: Germany.</p><p>Nematus dorsalis Serville, 1823: 73 . Lectotype ♀ (MNHN), designated by Lacourt (2000), not examined. Type locality: France, Département de l’Isère. Synonymy by (Konow 1904e).</p><p>Nematus testaceus Stephens, 1835: 29 . Syntypes ♀♀ (BMNH?), not examined. Type localities: United Kingdom, England, Kent, Darenth Wood, and Devonshire.</p><p>Nematus fulvus Hartig, 1837: 194 . Synonymy by Kriechbaumer (1884).</p><p>Nematus purus Förster, 1854a: 278–279 . Lectotype designated below. Synonymy by Dalla Torre (1894).</p><p>Nematus fulvus var. basalis Costa, 1859: 18–19 . Syntypes ♀♀ (MZFN?), not examined. Type locality: Italy, Naples area. Synonymy by Dalla Torre (1894).</p><p>Nematus trimaculatus Snellen van Vollenhoven, 1862: 69–71, pl. 4. Lectotype ♀ (RMNH), designated by Thomas (1987), not examined. Type locality: Netherlands Zuid-Holland, Leiden. Synonymy with  N. fulvus by Kaltenbach (1869). Primary homonym of  Nematus trimaculatus Serville, 1823 [=  Euura ribesii (Scopoli, 1763)].</p><p>Nematus solitarius Zaddach, 1883 in Brischke 1883: 179. Holotype ♀ (ZMHB), not examined. Type locality: Denmark, Copenhagen? Synonymy by Konow (1904e).</p><p>Pteronus magus Marlatt, 1896a: 44–46 (key), 67. Holotype ♀ (ANSP), not examined. Type locality: Canada. Syn. nov. Based on Smith (2004), a very good match is DEI-GISHym31136.</p><p>Pteronidea miliaris var. nigronotata Enslin, 1916a: 453 . Syntypes ♀♀ (not located in ZSM). Type locality: not stated. Synonymy by Lacourt (1999).</p><p>Diagnosis</p><p>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:AAN8145 fit perfectly with  E. miliaris, but not with  E. fagi or  E. nigricornis .</p><p>Type material examined</p><p>Holotype  Nematus fulvus</p><p>GERMANY – Niedersachsen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=10.3&amp;materialsCitation.latitude=51.8" title="Search Plazi for locations around (long 10.3/lat 51.8)">Harz</a>; 51.8° N, 10.3° E; W. Saxesen leg.; ZSM, GBIF-GISHym3286.</p><p>Lectotype  Nematus purus, here designated</p><p>GERMANY – Niedersachsen • ♀;  Hannover; ZSM, GBIF-GISHym3396.</p><p>Paralectotype  Nematus purus</p><p>GERMANY • ♀; ZSM, GBIF-GISHym3397 .</p><p>Notes</p><p>Pteronus magus . Based on Smith (2004), a very good morphological match is DEI-GISHym31136.</p><p>Host plants</p><p>A wide spectrum of  Salix spp. (Taeger et al. 1998).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Holarctic. Specimens studied are from Austria, Canada, China (only genetics), Denmark, Finland, France, Germany, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FFA2D869975CFBDCFDA5FAB5	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFA3D86E9722FA84FE39FB85.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura nigricornis (Serville 1823)	<div><p>177  Euura nigricornis (Serville, 1823)</p><p>Figs 196, 424</p><p>Nematus nigricornis Serville, 1823: 65 . Syntypes ♀ ♂, not located in MNHN. Type locality: France, Paris area.</p><p>Nematus zetterstedti Dahlbom, 1835a: 40, plate fig. 5. Syntypes ♀♀ (ZMLU), not examined [but examined by Lindqvist (1956)]. Type locality: not stated. Synonymy with  miniatus by Thomson (1863).</p><p>Nematus miniatus Hartig, 1837: 189–190 . Lectotype designated below. Synonymy by Konow (1903c).</p><p>Nematus sibiricus Jakowlew, 1888: 368–369 . Synonymy by Konow (1903c).</p><p>Nematus biannulatus Costa, 1890: 5, pl. III fig. 2. Holotype ♀, not located. Type locality: Greece. Synonymy by Konow (1903c).</p><p>Diagnosis</p><p>Black antennae and mesepisternum distinguish the females from the darker specimens of  E. miliaris . Male not known for certain.</p><p>Type material examined</p><p>Lectotype  Nematus miniatus, here designated</p><p>GERMANY – Niedersachsen • ♀; Harz; 51.8° N, 10.3° E; W. Saxesen leg.; NFVG, GBIF-GISHym4677.</p><p>Holotype  Nematus sibiricus</p><p>RUSSIA – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=104.24&amp;materialsCitation.latitude=52.29" title="Search Plazi for locations around (long 104.24/lat 52.29)">Irkutskaja oblast</a> • ♀; Irkutsk; 52.29° N, 104.24° E; ZIN, DEI-GISHym30174.</p><p>Host plants</p><p>Populus tremula . Records from  Salix (Georgiev et al. 2002) and  Betula (Boevé 1990) need confirmation.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Belgium, Czech Republic (uncertain male), Finland, Germany, Russia, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FFA3D86E9722FA84FE39FB85	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFA4D86E9764FBD4FC17FA2A.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura miltonota (Zaddach 1883)	<div><p>178  Euura miltonota group</p><p>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 &amp; Mutanen sp. nov. penis valve is more similar to that of some other species outside the group (see details under that species).</p></div>	https://treatment.plazi.org/id/03BCA619FFA4D86E9764FBD4FC17FA2A	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFA4D86F9726FA2DFB53FBA5.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura miltonota (Zaddach 1883)	<div><p>179  Euura miltonota (Zaddach, 1883)</p><p>Figs 197, 425</p><p>Nematus miltonotus Zaddach, 1883 in Brischke 1883: 135, 143. Syntypes ♀♀, probably destroyed (Blank &amp; Taeger 1998).Type localities: Poland, Gdansk [Danzig]; Russia, Kaliningrad [Königsberg]; Germany, Mecklenburg.</p><p>Amauronematus jaroslawensis Jakowlew, 1891: 25 . Holotype ♀ (DEI-GISHym30176, ZIN). Type locality: Russia, Yaroslavl oblast, Yaroslavskiy Rayon. Synonymy by Enslin (1915).</p><p>Amauronematus hercyniae Konow, 1896: 163 . Syntypes ♀ ♂, no specimens located. Type localities: Germany and Russia. Synonymy by Enslin (1915).</p><p>Diagnosis</p><p>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).</p><p>Type material examined</p><p>Holotype  Amauronematus jaroslawensis</p><p>RUSSIA – Yaroslavl oblast • ♀;  Yaroslavskiy Rayon; ZIN, DEI-GISHym30176.</p><p>Host plants</p><p>Salix viminalis (Miles 1935; Roller et al. 2022).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Czech Republic, Germany, Russia, and Slovakia.</p></div>	https://treatment.plazi.org/id/03BCA619FFA4D86F9726FA2DFB53FBA5	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFA5D86C975BFBB3FB16FBD6.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura nimbus (Benson 1960) ZMUO.	<div><p>180  Euura nimbus (Benson, 1960)</p><p>Figs 198, 426</p><p>Amauronematus nimbus Benson, 1960: 177–179 .</p><p>Amauronematus lanceatus Hellén, 1970: 17–18 . Lectotype designated below. Syn. nov.</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Holotype  Amauronematus nimbus</p><p>SWITZERLAND – Valais • ♀; near <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=7.23&amp;materialsCitation.latitude=46.1" title="Search Plazi for locations around (long 7.23/lat 46.1)">Verbier</a>; 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.</p><p>Notes</p><p>Head more like DEI-GISHym19984, sawsheath in lateral view more like ZMUO.030875.</p><p>Lectotype  Amauronematus lanceatus, here designated</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=20.81&amp;materialsCitation.latitude=69.04" title="Search Plazi for locations around (long 20.81/lat 69.04)">Lapin Lääni</a> • ♀; Kilpisjärvi; 69.04° N, 20.81° E; 23 Jun. 1963; O. Ranin leg.; MZH, http://id.luomus.fi/GL.3400.</p><p>Paralectotypes  Amauronematus lanceatus</p><p>FINLAND – Inari Lapland • 1 ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=27.03&amp;materialsCitation.latitude=69.91" title="Search Plazi for locations around (long 27.03/lat 69.91)">Utsjoki</a>; 69.91° N, 27.03° E; 20 Jun. 1960; O. Ranin leg.; MZH, http://id.luomus.fi/GL.3401  . –   Kittilä Lapland • 1 ♀; Muonio, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=23.999&amp;materialsCitation.latitude=68.1" title="Search Plazi for locations around (long 23.999/lat 68.1)">Pallastunturi</a>; 68.100° N, 23.999° E; 1 Aug. 1951; J. Kaisila leg.; MZH, http://id.luomus.fi/GL.3402  .</p><p>Notes</p><p>Best matches: DEI-GISHym19983, ZMUO.030875. A COI sequence (325 bp) of the lectotype (http://id.luomus.fi/ GL.3400) is identical to, e.g., DEI-GISHym84692 ( E. sagmarius) and ZMUO.030875 ( E. nimbus).</p><p>Host plants</p><p>Salix lanata and other grey willows.</p><p>Genetics</p><p>COI</p><p>Based on 19 specimens, maximum within-species distance is 2.45% and the nearest neighbour, diverging by a minimum of 0%, is  Euura sagmarius .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Norway, Sweden, and Switzerland.</p></div>	https://treatment.plazi.org/id/03BCA619FFA5D86C975BFBB3FB16FBD6	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFA6D86D972BFB62FBE8FC5D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura sagmarius (Konow 1895)	<div><p>181  Euura sagmarius (Konow, 1895)</p><p>Figs 199, 427</p><p>Amauronematus sagmarius Konow, 1895: 177–178 . Lectotype designated by Muche (1975).  Amauronematus viduatinus Malaise, 1931b: 40–41 . Lectotype designated below. Syn. nov.  Amauronematus viduatinus var. apiciscerra Malaise, 1931b: 41 . Lectotype designated below. Syn. nov.</p><p>Diagnosis</p><p>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 .</p><p>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.</p><p>Type material examined</p><p>Lectotype  Amauronematus sagmarius</p><p>RUSSIA – Volgograd oblast • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=44.53&amp;materialsCitation.latitude=48.69" title="Search Plazi for locations around (long 44.53/lat 48.69)">Sarepta</a> [Volgograd]; 48.69° N, 44.53° E; SDEI, GBIF-GISHym4100.</p><p>Lectotype  Amauronematus viduatinus, here designated</p><p>RUSSIA – Kamchatka oblast • ♀; Nischne-Kamtchatsk, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=161.893&amp;materialsCitation.latitude=56.166" title="Search Plazi for locations around (long 161.893/lat 56.166)">Lake Azhabachye</a>; 56.166° N, 161.893° E; R. Malaise leg.; NHRS, NHRS-HEVA000006398.</p><p>Paralectotype  Amauronematus viduatinus</p><p>RUSSIA – Kamchatka oblast • 1 ♀; same data as for lectotype; NHRS, NHRS-HEVA000006394 .</p><p>Lectotype  Amauronematus viduatinus var. apiciscerra, here designated</p><p>RUSSIA – Kamchatka oblast • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=160.85&amp;materialsCitation.latitude=56.32" title="Search Plazi for locations around (long 160.85/lat 56.32)">Klutchi</a> [Klyuchi]; 56.32° N, 160.85° E; R. Malaise leg.; NHRS, NHRS-HEVA000006404  .</p><p>Host plants</p><p>Salix phylicifolia and possibly some other  Salix spp.</p><p>Genetics</p><p>COI</p><p>Based on 21 specimens, maximum within-species distance is 2.74% and the nearest neighbour, diverging by a minimum of 0%, is  Euura nimbus .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Norway, Russia, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FFA6D86D972BFB62FBE8FC5D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FFA7D89094E0FC1DFD75FD18.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura halo Prous, Liston & Mutanen 2025	<div><p>182  Euura halo Prous, Liston &amp; Mutanen sp. nov.</p><p>urn:lsid:zoobank.org:act: E9A11B4C-D445-48E4-82DC-92247F381EEF</p><p>Figs 83–84, 200, 428</p><p>Diagnosis</p><p>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.</p><p>Etymology</p><p>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.</p><p>Type material</p><p>Holotype</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=26.184&amp;materialsCitation.latitude=69.768" title="Search Plazi for locations around (long 26.184/lat 69.768)">Inari Lapland</a> • ♀; 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.</p><p>Paratypes</p><p>FINLAND – Inari Lapland • 1 ♀; same locality as for holotype; 17 Jun. 2023; A. Liston leg.; SDEI, DEI-GISHym81435 •  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 .</p><p>Description</p><p>Female</p><p>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.</p><p>Male</p><p>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.</p><p>Host plants</p><p>Salix sp.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland.</p></div>	https://treatment.plazi.org/id/03BCA619FFA7D89094E0FC1DFD75FD18	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF5AD8909761FD5EFB3CFC2A.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura myosotidis (Fabricius 1804)	<div><p>183  Euura myosotidis group</p><p>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.</p></div>	https://treatment.plazi.org/id/03BCA619FF5AD8909761FD5EFB3CFC2A	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF5AD8919753FC2DFC17FE51.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura dissimilis (Forster 1854)	<div><p>184  Euura dissimilis (Förster, 1854)</p><p>Figs 201, 429</p><p>Nematus melanosternus Hartig, 1840: 27 . Lectotype ♂ (ZSM), designated by Taeger &amp; Blank (1998), not examined. Type locality: Austria, North Tyrol, Stübaier Alps. Synonymy by Taeger &amp; Blank (1998). Primary homonym of  Nematus melanosternus Serville, 1823 [=  Euura punicea (Christ, 1791)].</p><p>Nematus dissimilis Förster, 1854a: 314–315 . Lectotype ♂ (ZSM), designated by Taeger &amp; Blank (1998), not examined. Type locality: Germany, Nordrhein-Westfalen, Aachen area.</p><p>Diagnosis</p><p>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).</p><p>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.</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>Based on 2 specimens, maximum within-species distance is 0.39%. The nearest neighbour, diverging by a minimum of 1.05%, is  Euura myosotidis .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from France, and Germany.</p></div>	https://treatment.plazi.org/id/03BCA619FF5AD8919753FC2DFC17FE51	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF5BD8919723FE18FEDAF857.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura hypoxantha (Forster 1854)	<div><p>185  Euura hypoxantha (Förster, 1854)</p><p>Figs 206, 430</p><p>Nematus hypoxanthus Förster, 1854a: 313–314 . Lectotype designated below.</p><p>Nematus palliatus Thomson, 1863: 635 . Lectotype designated below. Synonymy by Konow (1904e).</p><p>Nematus orbitalis Cameron, 1884: 265–266 . Syntypes ♀ ♂ (BMNH?), not examined. Type localities: United Kingdom, Scotland; Cadder Wilderness and Ballantrae, and Germany. Synonymy by Konow (1904e).</p><p>Pteronidea nigronota Lindqvist, 1958: 102 . Holotype ♀ (MZH?), not examined. Type locality: Finland, Munksnäs. Synonymy by Lindqvist (1959a).</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Lectotype  Nematus hypoxanthus, here designated</p><p>GERMANY – Nordrhein-Westfalen • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.09&amp;materialsCitation.latitude=50.77" title="Search Plazi for locations around (long 6.09/lat 50.77)">Aachen area</a>; 50.77° N, 6.09° E; ZSM, DEI-GISHym3301.</p><p>Lectotype  Nematus palliatus, here designated</p><p>SWEDEN – Skåne • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=13.19&amp;materialsCitation.latitude=55.71" title="Search Plazi for locations around (long 13.19/lat 55.71)">Lund</a>; 55.71° N, 13.19° E; MZLU, MZLU2017322.</p><p>Host plants</p><p>Many different  Salix spp. (Taeger et al. 1998), less frequently  Populus spp. (Chambers 1952).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Austria, Belgium, Estonia, Finland, Germany, Norway, Russia, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF5BD8919723FE18FEDAF857	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF5CD896972AFEEFFB2AF901.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura jugicola (Thomson 1871)	<div><p>186  Euura jugicola (Thomson, 1871)</p><p>Figs 207, 431–432</p><p>Nematus jugicola Thomson, 1871: 146–147 . Lectotype designated below.</p><p>Pteronidea karvoneni Lindqvist, 1969: 237–238 . Synonymy by Hellén (1976).</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Lectotype  Nematus jugicola, here designated</p><p>SWEDEN – Dalarna • ♀;  Dalecarlia alpibus [mountainous part of Dalarna province]; C.H. Boheman leg.; NHRS, NHRS-HEVA000003972.</p><p>Holotype  Pteronidea karvoneni</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=20.81&amp;materialsCitation.latitude=69.04" title="Search Plazi for locations around (long 20.81/lat 69.04)">Lapin Lääni</a> • ♀; Kilpisjärvi; 69.04° N, 20.81° E; 2 Jul. 1964; V.J. Karvonen leg.; MZH, http://id.luomus.fi/GL.3504.</p><p>Host plants</p><p>Salix spp., including  S. glabra Scop. (Weiffenbach 1975),  S. aurita L.,  S. myrsinifolia, and  S. phylicifolia (Kangas 1985) .</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Holarctic. Specimens studied are from Canada, Finland, Italy, Sweden, and the USA.</p></div>	https://treatment.plazi.org/id/03BCA619FF5CD896972AFEEFFB2AF901	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF5CD894973CF948FED5FA34.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura myosotidis (Fabricius 1804)	<div><p>187  Euura myosotidis (Fabricius, 1804)</p><p>Figs 202, 433–434</p><p>Tenthredo myosotidis Fabricius, 1804: 41–42 . Syntypes, sex not stated (1 specimen in NHMD according to Zimsen 1964), not examined. Type locality: Germania.</p><p>Nematus interruptus Serville, 1823: 67 . Lectotype ♀ (MNHN), designated by Lacourt (2000), not examined. Type locality: France, Ile-de-France, Paris. Synonymy by Konow (1903c).</p><p>Nematus segmentarius Förster, 1854a: 283–284 . Lectotype designated below. Synonymy by Dalla Torre (1894).</p><p>Nematus ambiguus Förster, 1854a: 279–280 . Lectotype ♀ (ZSM), designated by Taeger &amp; Blank (1998), not examined. Type locality: Germany, Nordrhein-Westfalen, Aachen area. Synonymy by Konow (1903c).</p><p>Nematus incompletus Förster, 1854a: 297–298 . Syn. nov.</p><p>Nematus smaragdinus Stein, 1881: 60–62 . Syntypes ♀♀ (BMNH?), not examined. Type locality: Czech Republic, Bohemia, Chodau [Chodov]. Syn. nov.</p><p>Nematus pulchellus Cameron, 1882: 537–538 . Syntypes, sex not stated (BMNH?), not examined. Type locality: United Kingdom, Scotland, Clydesdale.  Syn. nov.</p><p>Nematus decipiens W.F. Kirby, 1882: 107 . Replacement name for  Nematus ambiguus Förster, 1854 .</p><p>Nematus chlorogaster Zaddach, 1884 in Brischke 1884: 149–150. Syntypes ♀♀ ♂♂, not located. Type localities: Gdansk [Danzig], Kaliningrad [Königsberg], Frankfurt a.M, Kiel, Munich, Vienna, Sweden. Syn. nov.</p><p>Pteronus atriceps Marlatt, 1896a: 44 (key), 52. Holotype ♀ (USNM?), not examined. Type locality: USA, Nevada. Syn. nov. Synonymy based on Poinar &amp; Smith (2003). Additionally, a specimen originally identified as  atriceps -group from USA (8e) is morphologically and genetically not distinguishable from  E. myosotidis .</p><p>Pteronus californicus Marlatt, 1896a: 44–45 (key), 60. Holotype ♀ (USNM?), not examined. Type locality: USA, California. Syn. nov. Synonymised with  Pteronus atriceps Marlatt by Smith (1979).</p><p>Pteronus myosotidis var. fallaciosus Konow, 1903b: 308 . Lectotype designated below. Synonymy by Enslin (1916a).</p><p>Pteronidea myosotidis var. pseudopavida Enslin, 1916a: 428 . Syntypes, sex not stated, not located. Type locality: not stated. Synonymy by Lacourt (1999).</p><p>Pteronidea myosotidis var. zaddachi Enslin, 1916a: 428 . Syntypes, sex not stated, not located. Type locality: not stated. Synonymy by Lindqvist (1960c).</p><p>Pteronidea segmentaria var. signata Enslin, 1916a: 426 . Lectotype designated below. Syn. nov.</p><p>Pteronidea segmentaria var. tessinensis Enslin, 1916a: 426 . Lectotype designated below. Syn. nov.</p><p>Pteronidea transversalis Lindqvist, 1977: 94–95 . Syn. nov.</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Lectotype  Nematus segmentarius, here designated</p><p>GERMANY – Nordrhein-Westfalen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.09&amp;materialsCitation.latitude=50.77" title="Search Plazi for locations around (long 6.09/lat 50.77)">Aachen area</a>; 50.77° N, 6.09° E; ZSM, DEI-GISHym3418.</p><p>Lectotype  Pteronus myosotidis var. fallaciosus, here designated</p><p>SPAIN – Galicia • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=8.42&amp;materialsCitation.latitude=43.34" title="Search Plazi for locations around (long 8.42/lat 43.34)">Coruna</a>; 43.34° N, 8.42° E; SDEI, GBIF-GISHym3860  .</p><p>Syntype  Nematus incompletus</p><p>GERMANY – Nordrhein-Westfalen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.09&amp;materialsCitation.latitude=50.77" title="Search Plazi for locations around (long 6.09/lat 50.77)">Aachen area</a>; 50.77° N, 6.09° E; ZSM, DEI-GISHym3302  .</p><p>Notes</p><p>Specimen almost completely destroyed: only left forewing remaining.</p><p>Lectotype  Pteronidea segmentaria var. signata, here designated</p><p>GERMANY – Thüringen • ♂; Erfurt, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=11.03&amp;materialsCitation.latitude=50.94" title="Search Plazi for locations around (long 11.03/lat 50.94)">Steiger</a>; 50.94° N, 11.03° E; 6 Jul. 1890; ZSM, GBIF-GISHym3424  .</p><p>Lectotype  Pteronidea segmentaria var. tessinensis, here designated</p><p>SWITZERLAND – Ticino • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=8.71&amp;materialsCitation.latitude=46.24" title="Search Plazi for locations around (long 8.71/lat 46.24)">Valle Maggia</a>; 46.24° N, 8.71° E; ZSM, GBIF-GISHym3447  .</p><p>Holotype  Pteronidea transversalis</p><p>RUSSIA – Krasnoyarskiy Kray • ♀;  Tjunojar; 11 Jul. 1973; B.N. Verzhutskij leg.; MZH, http://id.luomus.fi/GL.5143.</p><p>Host plants</p><p>A wide range of herbaceous  Fabaceae Lindl.:  Lathyrus spp. (Kontuniemi 1960; Macek et al. 2020; rearings by VV),  Lotus corniculatus L. (Perkins 1929a),  Trifolium spp. (Macek et al. 2020; rearings by VV and mm), and  Vicia spp. (Kangas 1985; Macek et al. 2020).</p><p>Genetics</p><p>COI</p><p>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.</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>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.</p></div>	https://treatment.plazi.org/id/03BCA619FF5CD894973CF948FED5FA34	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF5ED8959737FA04FB8DFC25.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura platystigma (Lindqvist 1949)	<div><p>188  Euura platystigma (Lindqvist, 1949)</p><p>Figs 203, 435</p><p>Pteronidea platystigma Lindqvist, 1949: 74–75 .</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Holotype  Pteronidea platystigma</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=25.98&amp;materialsCitation.latitude=69.61" title="Search Plazi for locations around (long 25.98/lat 69.61)">Inari Lapland</a> • ♀; Utsjoki, Outakoski; 69.61° N, 25.98° E; 25 Jun. 1947; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.3540.</p><p>Host plants</p><p>Astragalus alpinus L. (Vikberg 1978).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Norway, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF5ED8959737FA04FB8DFC25	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF5FD89A973AFC34FC10FD0E.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura semiopaca (Lindqvist 1958)	<div><p>189  Euura semiopaca (Lindqvist, 1958)</p><p>Figs 204, 436–437</p><p>Pteronidea semiopaca Lindqvist, 1958: 97 .</p><p>Pachynematus tenuiserra Lindqvist, 1949: 80–81 . Secondary homonym of  Amauronematus tenuiserra Lindqvist, 1944 [=  Euura tenuiserra (Lindqvist, 1944)]. Syn. nov.</p><p>Euura scandica Vårdal &amp; Heibo, 2014 in Prous et al. 2014: 53. Replacement name for  Pachynematus tenuiserra Lindqvist, 1949 .</p><p>Diagnosis</p><p>Most similar to  E. platystigma and  E. dissimilis: see discussion under those species.</p><p>Type material examined</p><p>Holotype  Pteronidea semiopaca</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=25.98&amp;materialsCitation.latitude=69.61" title="Search Plazi for locations around (long 25.98/lat 69.61)">Inari Lapland</a> • ♀; Utsjoki, Outakoski; 69.61° N, 25.98° E; 25 Jun. 1947; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.3519.</p><p>Notes</p><p>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 .</p><p>Holotype  Pachynematus tenuiserra</p><p>FINLAND – Lapin Lääni • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=20.85&amp;materialsCitation.latitude=69.05" title="Search Plazi for locations around (long 20.85/lat 69.05)">Saana</a>; 69.05° N, 20.85° E; A. Nordman leg.; MZH, http://id.luomus.fi/ GL.3594.</p><p>Host plants</p><p>Astragalus frigidus (L.) A.Gray.</p><p>Genetics</p><p>COI</p><p>Only one sequence is available. The nearest neighbour, diverging by a minimum of 4.26%, is  Euura platystigma .</p><p>Nuclear</p><p>Only one sequence available. The nearest neighbour, diverging by a minimum of 1.19%, is  Euura myosotidis .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF5FD89A973AFC34FC10FD0E	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF50D89B9754FD4AFABCFD02.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura tibialis (Newman 1837)	<div><p>190  Euura tibialis (Newman, 1837)</p><p>Figs 205, 438</p><p>Nematus tibialis Newman, 1837: 260 . Syntypes ♀♀, not located. Type locality: United Kingdom, England, Isle of Wight.</p><p>Nematus hortensis Hartig, 1837: 197 . Lectotype designated below. Synonymy by Cameron (1876c).</p><p>Nematus xanthobaptus Förster, 1854b: 430–431 . Lectotype designated below. Synonymy with  N. hortensis by Kriechbaumer (1885).</p><p>Nematus trilineatus 
Norton, 1867: 215 . Holotype ♀ (ANSP Type no. 10334, ANSP), not examined. Type locality: Canada.</p><p>Nematus catachloris Snellen van Vollenhoven, 1869: 120, pl. 3. Lectotype ♀ (ZMAN), not examined, designated by Thomas (1987). Type locality: Netherlands, Leiden area. Synonymy with  N. hortensis by Dalla Torre (1894).</p><p>Nematus similaris Norton, 1880: 222–224, pl. IV. Syntypes 3 ♀♀ (USNMENT00778331, USNM, http://n 2t.net/ark:/65665/3755cb4a5-8c5f-42b9-ae22-7f22c41f1ad8), not examined. Type locality: USA, Missouri.</p><p>Nematus robiniae 
Forbes, 1885: 116 . Holotype ♀ (INHS), not examined. Type locality: USA, Illinois, Normal.</p><p>Pteronus solitarius 
Rohwer, 1908: 107–108 . Holotype ♀ (USNMENT00779506, USNM, http://n 2t. net/ark:/65665/3ba054722-da5b-4824-b22c-87a160eacfc7), not examined. Type locality: USA, Colorado, Trinidad.</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Lectotype  Nematus hortensis, here designated</p><p>GERMANY • ♀; ZSM, GBIF-GISHym3292.</p><p>Lectotype  Nematus xanthobaptus, here designated</p><p>GERMANY – Nordrhein-Westfalen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.95&amp;materialsCitation.latitude=50.95" title="Search Plazi for locations around (long 6.95/lat 50.95)">Köln</a>; 50.95° N, 6.95° E; ZSM, GBIF-GISHym3458.</p><p>Host plants</p><p>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).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Holarctic. Specimens studied are from Belgium, Bulgaria, Estonia, Germany, Italy, and Romania.</p></div>	https://treatment.plazi.org/id/03BCA619FF50D89B9754FD4AFABCFD02	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF51D89B9764FD55FE44FB67.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura oligospila (Forster 1854)	<div><p>191  Euura oligospila group</p><p>The species group was revised by Prous et al. (2021): see there for details of type material, synonymy, host plants, distribution, and identification characters.</p><p>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.</p></div>	https://treatment.plazi.org/id/03BCA619FF51D89B9764FD55FE44FB67	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF51D89B972EFA9FFB2EF8B5.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura oligospila (Forster 1854)	<div><p>193  Euura oligospila (Förster, 1854)</p><p>Figs 221, 440</p><p>Pteronidea angustiserra Lindqvist, 1969: 241–242 . Syn. nov.</p><p>Type material examined</p><p>Holotype  Pteronidea angustiserra</p><p>FINLAND – South Ostrobothnia • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=21.68&amp;materialsCitation.latitude=63.11" title="Search Plazi for locations around (long 21.68/lat 63.11)">Mustasaari</a>; 63.11° N, 21.68° E; 24 Jul. 1963; J. Perkiömäki leg.; MZH, http://id.luomus.fi/GL.3443.</p><p>Notes</p><p>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.</p></div>	https://treatment.plazi.org/id/03BCA619FF51D89B972EFA9FFB2EF8B5	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF52D898972AFE37FBF2F99A.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura montana (Zaddach 1883)	<div><p>195  Euura montana (Zaddach, 1883)</p><p>Figs 210, 441</p><p>Nematus montanus Zaddach, 1883 in Brischke 1883: 142–143. Syntypes ♀ ♂, probably destroyed (Blank &amp; Taeger 1998). Type locality: Switzerland.</p><p>Nematus jemilleri Stein, 1894: 55–58 . Syntypes ♀ ♂ (BMNH?), not examined. Type locality: Germany, Bayern, and Czech Republic, Chodau. Synonymy by Konow (1904c).</p><p>Diagnosis</p><p>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.</p><p>Host plants</p><p>Picea abies (L.) H.Karst. and probably at least some other species of  Picea (Enston &amp; Williams 2024) . One generation per year.</p><p>Genetics</p><p>COI</p><p>Based on 6 specimens, maximum within-species distance is 0.78% and the nearest neighbour, diverging by a minimum of 0%, is  Euura pallescens .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, France, Germany, and Slovakia.</p></div>	https://treatment.plazi.org/id/03BCA619FF52D898972AFE37FBF2F99A	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF52D8989760FEEEFAF9FE20.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura pallescens (Hartig 1837)	<div><p>194  Euura pallescens group</p><p>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.</p></div>	https://treatment.plazi.org/id/03BCA619FF52D8989760FEEEFAF9FE20	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF52D8999751F9DDFB9AFA9C.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura pallescens (Hartig 1837)	<div><p>196  Euura pallescens (Hartig, 1837)</p><p>Figs 211, 442</p><p>Nematus pallescens Hartig, 1837: 216 . Lectotype designated below.</p><p>Nematus olivaceus Thomson, 1871: 120–121 . Lectotype designated below. Synonymy by Konow (1890).</p><p>Nematus ruficeps Zaddach, 1883 in Brischke 1883: 131. Holotype ♀, probably destroyed (Blank &amp; Taeger 1998). Type locality: Denmark, Sonderburg. Synonymy by Konow (1890).</p><p>Nematus pachycerus Borries, 1896: 232–233 . Syntypes ♀ ♂, not located, possibly destroyed. Type locality: Denmark, Dyrehaven. Synonymy by Blank et al. (2009).</p><p>Diagnosis</p><p>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 .</p><p>Type material examined</p><p>Lectotype  Nematus pallescens, here designated</p><p>GERMANY – Niedersachsen • ♀; Harz; 51.8° N, 10.3° E; W. Saxesen leg.; ZSM, GBIF-GISHym3373.</p><p>Lectotype  Nematus olivaceus, here designated</p><p>SWEDEN – Skåne • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=13.66&amp;materialsCitation.latitude=56.35" title="Search Plazi for locations around (long 13.66/lat 56.35)">Wittsjö</a> [Vittsjö]; 56.35° N, 13.66° E;in coniferous forest; MZLU, MZLU2017280.</p><p>Host plants</p><p>Picea abies . One generation per year.</p><p>Genetics</p><p>COI</p><p>Based on 5 specimens, maximum within-species distance is 1.37% and the nearest neighbour, diverging by a minimum of 0%, is  Euura montana .</p><p>Nuclear</p><p>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-GISHym80693 (looks like  E. montana, lancet Fig. 213) from Primorsky Krai, Russia.</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Germany, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF52D8999751F9DDFB9AFA9C	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF53D89E9771FADCFC29FD76.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura styx (Benson 1958)	<div><p>197  Euura styx (Benson, 1958)</p><p>Figs 212, 443–444</p><p>Pachynematus styx Benson, 1958b: 301–303 .</p><p>Diagnosis</p><p>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 .</p><p>Type material examined</p><p>Holotype  Pachynematus styx</p><p>GERMANY – Niedersachsen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=10.43&amp;materialsCitation.latitude=51.7" title="Search Plazi for locations around (long 10.43/lat 51.7)">Sieber</a>; 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.</p><p>Host plants</p><p>Picea abies (Benson 1958b) . One generation per year.</p><p>Genetics</p><p>COI</p><p>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-GISHym80693 from Primorsky Krai.</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland and Germany.</p></div>	https://treatment.plazi.org/id/03BCA619FF53D89E9771FADCFC29FD76	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF54D89E9768FCC1FB8DFAC5.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura papillosa (Retzius 1783) ZMUO.	<div><p>198  Euura papillosa group</p><p>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.</p></div>	https://treatment.plazi.org/id/03BCA619FF54D89E9768FCC1FB8DFAC5	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF54D89F9750FA94FEAAF93D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura papillosa (Retzius 1783) ZMUO.	<div><p>199  Euura papillosa (Retzius, 1783)</p><p>Figs 208, 445</p><p>Tenthredo papillosa Retzius, 1783: 72, by indication on Degeer (1771): 982, pl. 37 figs 1–11. Type material lost. Type locality: Sweden.</p><p>Tenthredo fuscata Christ, 1791: 452, by indication on Degeer (1771): 982, pl. 37 figs 1–11. Type material lost. Type locality: Sweden.</p><p>Nematus melanaspis Hartig, 1840: 27 . Lectotype designated below. Synonymy by Blank et al. (2009).</p><p>Nematus lacteus Thomson, 1871: 155–156 . Lectotype designated below. Synonymy with  melanaspis by Konow (1890).</p><p>Nematus sulphureus Zaddach, 1876: pl. II figs 6, 14. Description based on larvae: adult ♀ ♂ were described later in Brischke (1883). Type material probably destroyed (Blank &amp; Taeger 1998). Type locality: not stated. Synonymy with  melanaspis by Konow (1890).</p><p>Nematus citreus André, 1880b: 203–204 . Syntypes, sex not stated, not located. Type locality: not stated. Synonymy with  melanaspis by Konow (1890).</p><p>Nematus maculiger Cameron, 1882: 538–539 . Syntypes ♀ ♂ (BMNH?), not examined. Type localities: United Kingdom; Scotland, Clydesdale and England, Worcester. Synonymy with  melanaspis by Konow (1890).</p><p>Nematus brunnicornis Zaddach, 1883 in Brischke 1883: 136–137. Syntypes ♀ ♂, probably destroyed (Blank &amp; Taeger 1998). Type locality: Poland and /or Germany; Prussia,?Harz Mountains. Synonymy with  melanaspis by Enslin (1916a).</p><p>Pteronidea sveae Lindqvist, 1958: 99–100 . Synonymy with  melanaspis by Lindqvist (1967b).</p><p>Diagnosis</p><p>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 (MZ726800, 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 SRR15883156).</p><p>Type material examined</p><p>Lectotype  Nematus melanaspis, here designated</p><p>GERMANY • ♀;  northern Germany [according to Hartig 1840: 22]; ZSM, GBIF-GISHym3345.</p><p>Lectotype  Nematus lacteus, here designated</p><p>SWEDEN – Skåne • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=13.19&amp;materialsCitation.latitude=55.71" title="Search Plazi for locations around (long 13.19/lat 55.71)">Lund</a>; 55.71° N, 13.19° E; MZLU, MZLU2017317.</p><p>Holotype  Pteronidea sveae</p><p>FINLAND – Uusimaa • ♀; Helsinki, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=24.89&amp;materialsCitation.latitude=60.22" title="Search Plazi for locations around (long 24.89/lat 60.22)">Munksnäs</a> [Munkkiniemi]; 60.22° N, 24.89° E; 5 Aug. 1956; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.3508.</p><p>Host plants</p><p>A wide spectrum of species of  Salix,  Populus tremula (Pschorn-Walcher &amp; Altenhofer 2000),  P. nigra L. and hybrid poplar cultivars (Chambers 1952; Chevin &amp; Savina 2016).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Austria, China (only genetics), Finland, Germany, Japan, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF54D89F9750FA94FEAAF93D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF55D89C975FF93CFEDBF88F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura pavida (Serville 1823)	<div><p>200  Euura pavida (Serville, 1823)</p><p>Figs 209, 446–447</p><p>Nematus pavidus Serville, 1823: 67 . Lectotype ♀ (MNHN), designated by Lacourt (2000), not examined. Type locality: France, Ile-de-France, Paris.</p><p>Nematus ochraceus Hartig, 1837: 218–219 . Not found in ZSM. Type locality: Germany. Synonymy by Cameron (1885).</p><p>Nematus cylindricus Hartig, 1840: 24 . Lectotype designated below. Syn. nov.</p><p>Nematus semiorbitalis Förster, 1854a: 288–289 . Syntypes ♀♀ (GBIF-GISHym3421–23), not found in ZSM. Type locality: Germany. Synonymy by Cameron (1885).</p><p>Cryptocampus quadrum Costa, 1859: 25 . Syntypes ♀♀ (MZFN?), not examined. Type locality: Italy, Naples area. Synonymy by Cameron (1885).</p><p>Nematus wttewaalli Snellen van Vollenhoven, 1862: 65–68, pl. 4. Lectotype ♀ (RMNH), designated by Thomas (1987), not examined. Type locality: Netherlands, Utrecht. Synonymy by Cameron (1885).</p><p>Nematus cameronii Dalla Torre, 1894: 212 . A name for  Nematus aurantiacus Cameron, 1880, nec Hartig (1837). Holotype ♀ (BMNH?), not examined. Type locality: United Kingdom, England, Dorset, Glanvilles Wootton.</p><p>Pteronidea pavida var. notanda Enslin, 1916a: 423 . Lectotype designated below. Synonymy by Lacourt (1999).</p><p>Diagnosis</p><p>Closest to  E. papillosa, see differences discussed under that species.</p><p>Type material examined</p><p>Lectotype  Nematus cylindricus, here designated</p><p>GERMANY • ♀;  northern Germany [according to Hartig 1840: 22]; ZSM, GBIF-GISHym3248.</p><p>Notes</p><p>Most paralectotypes are also  E. pavida, but apparently include also  E. gracilidentata (GBIFGISHym3249, 3250, and maybe 3256) and  E. similator (GBIF-GISHym3255).</p><p>Lectotype  Pteronidea pavida var. notanda, here designated</p><p>FRANCE – Basse-Normandie • ♀; Lisieux; A. Loiselle leg.; ZSM, GBIF-GISHym3364 .</p><p>Host plants</p><p>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 &amp; Altenhofer 2000).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Austria, Belgium, Bulgaria, Finland, France, Germany, Norway, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF55D89C975FF93CFEDBF88F	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF56D89D9767F8CAFA9FFE39.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura punicea (Christ 1791) Prep.	<div><p>Euura punicea group s. lat.</p><p>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. 3A). 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.</p></div>	https://treatment.plazi.org/id/03BCA619FF56D89D9767F8CAFA9FFE39	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF57D89D979CFE30FC57FBCA.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura aegra (Konow 1895) ZMUO.	<div><p>201  Euura aegra group</p><p>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.</p></div>	https://treatment.plazi.org/id/03BCA619FF57D89D979CFE30FC57FBCA	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF57D8829746FB8DFBF7FD1A.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura aegra (Konow 1895) ZMUO.	<div><p>202  Euura aegra (Konow, 1895)</p><p>Figs 230, 454</p><p>Amauronematus aeger Konow, 1895: 181 . Lectotype designated by Oehlke &amp; Wudowenz (1984).  Amauronematus dalecarlicus Malaise, 1921a: 2–3 . Synonymy by Lindqvist (1962a).</p><p>Diagnosis</p><p>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).</p><p>Type material examined</p><p>Lectotype  Amauronematus aeger</p><p>GERMANY • ♀; Thüringen; SDEI, GBIF-GISHym4086.</p><p>Holotype  Amauronematus dalecarlicus</p><p>SWEDEN – Dalarna • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=15.524&amp;materialsCitation.latitude=60.312" title="Search Plazi for locations around (long 15.524/lat 60.312)">Säter</a>; 60.312° N, 15.524° E; E.Klefbeck leg.; NHRS, NHRS-HEVA000003833.</p><p>Host plants</p><p>Betula pubescens . According to Kangas (1985) also  B. pendula .</p><p>Genetics</p><p>COI</p><p>Based on 6 specimens, maximum within-species distance is 3.5% and the nearest neighbour, diverging by a minimum of 0%, is  Euura lindqvisti .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Germany, Norway, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF57D8829746FB8DFBF7FD1A	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF48D8839746FD5CFC7FFB6C.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura hebes (Konow 1907) ZMUO.	<div><p>203  Euura hebes (Konow, 1907)</p><p>Figs 230, 454</p><p>Amauronematus hebes Konow, 1907: 17–18 . Lectotype designated by Muche (1975).</p><p>Amauronematus pristiphorinus Malaise, 1921a: 2 . Synonymy by Lindqvist (1941b).</p><p>Amauronematus pribaicalicus Lindqvist, 1970: 100–102 . Syn. nov.</p><p>Amauronematus pristiphoroides Lindqvist, 1972: 72–73 . Syn. nov.</p><p>Pristiphora albomarginata Lindqvist, 1974a: 117–118 . Syn. nov.</p><p>Amauronematus harpicola Bogacheva, 1977: 87 . Lectotype ♀ (ZMMU), designated by Zinovjev &amp; Schmidt (1994), not examined. Type locality: Russia, Polar Urals, Kharp Biological Station. Syn. nov.</p><p>Diagnosis</p><p>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.</p><p>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 &amp; 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.</p><p>Type material examined</p><p>Lectotype  Amauronematus hebes</p><p>SWEDEN • ♀;  Northern Lapland; SDEI, GBIF-GISHym4093.</p><p>Holotype  Amauronematus pristiphorinus</p><p>SWEDEN – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=19.74&amp;materialsCitation.latitude=68.22" title="Search Plazi for locations around (long 19.74/lat 68.22)">Torne Lappmark</a> • ♀; Torneträsk; 68.22° N, 19.74° E; 400 m a.s.l.; R. Malaise leg.; NHRS, NHRS-HEVA000003841.</p><p>Holotype  Amauronematus pribaicalicus</p><p>RUSSIA – Irkutskaja oblast • ♀; Irkutsk, Oljhonsk, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=106.309&amp;materialsCitation.latitude=52.741" title="Search Plazi for locations around (long 106.309/lat 52.741)">Popovo</a>; 52.741° N, 106.309° E; 10 Apr. 1968; B.N. Verzhutskij leg.; MZH, http://id.luomus.fi/GL.5128.</p><p>Holotype  Amauronematus pristiphoroides</p><p>RUSSIA – Kamchatka oblast • ♀; Nischne-Kamtchatsk, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=161.893&amp;materialsCitation.latitude=56.166" title="Search Plazi for locations around (long 161.893/lat 56.166)">Lake Azhabachye</a>; 56.166° N, 161.893° E; R. Malaise leg.; NHRS, NHRS-HEVA000006425.</p><p>Holotype  Pristiphora albomarginata</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=23.999&amp;materialsCitation.latitude=68.1" title="Search Plazi for locations around (long 23.999/lat 68.1)">Kittilä Lapland</a> • 1 ♀; Muonio, Pallastunturi; 68.100° N, 23.999° E; 13 Jun. 1967; O. Ranin leg.; MZH, http://id.luomus.fi/GL.3403.</p><p>Notes</p><p>A COI sequence (658 bp) of the holotype is most similar to DEI-GISHym19918 ( E. hebes).</p><p>Host plants</p><p>Salix sp. or spp. (Kontuniemi 1960): at least grey-leaved species are hosts.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Russia, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF48D8839746FD5CFC7FFB6C	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF49D8809754FAECFC7FFB39.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura lindqvisti (Hellen 1951) ZMUO.	<div><p>204  Euura lindqvisti (Hellén, 1951)</p><p>Figs 233, 457</p><p>Amauronematus lindqvisti Hellén, 1951b: 107–108 . Lectotype designated below.</p><p>Amauronematus edenticulatus Lindqvist, 1970: 100 . Syn. nov.</p><p>Diagnosis</p><p>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.</p><p>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) .</p><p>Type material examined</p><p>Lectotype  Amauronematus lindqvisti, here designated</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=25.98&amp;materialsCitation.latitude=69.61" title="Search Plazi for locations around (long 25.98/lat 69.61)">Inari Lapland</a> • ♀; Utsjoki, Outakoski; 69.61° N, 25.98° E; 14 Jun. 1947; W. Hellén leg.; MZH, http://id.luomus.fi/GP.110166.</p><p>Holotype  Amauronematus edenticulatus</p><p>RUSSIA – Irkutskaja oblast • ♀; Irkutsk, Oljhonsk, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=106.309&amp;materialsCitation.latitude=52.741" title="Search Plazi for locations around (long 106.309/lat 52.741)">Popovo</a>; 52.741° N, 106.309° E; 13 Apr. 1968; B.N. Verzhutskij leg.; MZH, http://id.luomus.fi/GL.5129.</p><p>Host plants</p><p>Mainly  Betula spp., including  B. nana and  B. pubescens, but apparently also  Salix spp. (Tenow 1963; holotype of  edenticulatus).</p><p>Genetics</p><p>COI</p><p>Based on 7 specimens, maximum within-species distance is 2.13% and the nearest neighbour, diverging by a minimum of 0%, is  Euura aegra .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Russia, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF49D8809754FAECFC7FFB39	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF4AD886972CFB30FA8DFE5D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura sempersolis (Kiaer 1898)	<div><p>205  Euura sempersolis (Kiaer, 1898)</p><p>Figs 232, 456</p><p>Amauronematus sempersolis Kiaer, 1898: 41–42 . Lectotype designated below.</p><p>Amauronematus tristis Lindqvist, 1959d: 9–10 . Synonymy by Hellén (1970).</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Lectotype  Amauronematus sempersolis, here designated</p><p>NORWAY – Finnmark • ♀; Sør-Varanger, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=29.978&amp;materialsCitation.latitude=69.524" title="Search Plazi for locations around (long 29.978/lat 69.524)">Strand</a>; 69.524° N, 29.978° E; Jun. 1892; S. Schneider leg.; MZH, http://id.luomus.fi/GL.5237.</p><p>Holotype  Amauronematus tristis</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=23.999&amp;materialsCitation.latitude=68.1" title="Search Plazi for locations around (long 23.999/lat 68.1)">Kittilä Lapland</a> • ♀; Muonio, Pallastunturi; 68.100° N, 23.999° E; 22 Jun. 1942; W. Hellén leg.; MZH, http://id.luomus.fi/GL.2759.</p><p>Notes</p><p>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 (1959d) 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 1959d). 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.</p><p>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 (1959d: 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.</p><p>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 (1959d) 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.</p><p>Host plants</p><p>Probably monophagous on  Betula nana .</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Norway, Sweden, and the United Kingdom.</p></div>	https://treatment.plazi.org/id/03BCA619FF4AD886972CFB30FA8DFE5D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF4CD8869778FE1CFDD1FC97.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura amentorum (Forster 1854) NHRS-HEVA	<div><p>206  Euura amentorum group</p><p>The species group was revised by Liston et al. (2023): see there for details of type material, synonymy, host plants, distribution, and identification characters.</p><p>Based on the penis valves drawn by Lindqvist (1961a), 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 (1961a: figs 18–19, 21) refer to the  amentorum group, and possibly to the correct species.</p></div>	https://treatment.plazi.org/id/03BCA619FF4CD8869778FE1CFDD1FC97	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF4CD8869725FCA3FEF2FB98.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura amentorum (Forster 1854) NHRS-HEVA	<div><p>207  Euura amentorum (Förster, 1854)</p><p>Figs 222, 448</p><p>Notes</p><p>The COI sequence (563 bp) of a male (http://id.luomus.fi/GP.110189) is closest to the female ZMUO.038756.</p></div>	https://treatment.plazi.org/id/03BCA619FF4CD8869725FCA3FEF2FB98	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF4CD8879799F907FB2AFE65.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura histrio (Serville 1823) ZMUO.	<div><p>215  Euura histrio group</p><p>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 &amp; 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.</p></div>	https://treatment.plazi.org/id/03BCA619FF4CD8879799F907FB2AFE65	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF4DD887972EFDF5FC10F9FB.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura amicula (Saarinen 1950)	<div><p>216  Euura amicula (Saarinen, 1950)</p><p>Figs 234, 458</p><p>Amauronematus amicula Saarinen, 1950b: 47–49 . Holotype ♀ (http://id.luomus.fi/GL.3586, MZH). Type locality: Finland,  Lapin Lääni, Outakoski.</p><p>Diagnosis</p><p>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).</p><p>Type material examined</p><p>Holotype  Amauronematus amicula</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=25.98&amp;materialsCitation.latitude=69.61" title="Search Plazi for locations around (long 25.98/lat 69.61)">Inari Lapland</a> • ♀; Utsjoki, Outakoski; 69.61° N, 25.98° E; 19 Jun. 1947; A. Saarinen leg.; MZH, http://id.luomus.fi/GL.3586.</p><p>Host plants</p><p>Salix phylicifolia .</p><p>Genetics</p><p>COI</p><p>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 (DEIGISHym80673 from Primorsky Krai),  E. histrio,  E. rufa, and  E. septentrionalis .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF4DD887972EFDF5FC10F9FB	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF4DD8849757F97DFC03FB1E.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura betulae (Schmidt 1997)	<div><p>217  Euura betulae (Schmidt, 1997)</p><p>Fig. 235</p><p>Amauronematus betulae Schmidt, 1997: 279–280 . Holotype ♀ (http://id.luomus.fi/GL.2501, MZH). Type locality: Finland,  Juuma [735:60].</p><p>Diagnosis</p><p>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-GISHym80673) 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-GISHym80673 from Primorsky Krai, Russia) with the holotype, based on the lancet and similar colouration. No males have been associated with the female.</p><p>Type material examined</p><p>Holotype  Amauronematus betulae</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=29.38&amp;materialsCitation.latitude=66.27" title="Search Plazi for locations around (long 29.38/lat 66.27)">Kuusamo</a> • ♀; Juuma; 66.27° N, 29.38° E; 16 Jun. 1985; M. Ahola leg.; MZH, http://id.luomus.fi/GL.2501.</p><p>Host plants</p><p>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.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, and Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FF4DD8849757F97DFC03FB1E	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF4ED885975CFB58FD79FDC5.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura elbrus Sundukov 2017	<div><p>218  Euura elbrus Sundukov, 2017</p><p>Fig. 236</p><p>Nematus nivalis Muche, 1973a: 223–224 . Secondary homonym of  Pontania nivalis Vikberg, 1970b [=  Euura nivalis (Vikberg, 1970)].</p><p>Euura elbrus Sundukov, 2017a: 13 . Replacement name for  Nematus nivalis Muche, 1973 .</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Holotype  Nematus nivalis</p><p>RUSSIA – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=42.54&amp;materialsCitation.latitude=43.25" title="Search Plazi for locations around (long 42.54/lat 43.25)">Elbrus Region</a> • ♀; Itkol; 43.25° N, 42.54° E; 2800 m a.s.l.; 9 Jul. 1971; ZMHB, dbcac7 / GBIF-GISHym2827.</p><p>Host plants</p><p>Unknown, but probably not  Salix repens L. (the host of  E. propinquator), because the type specimens were collected above the tree line.</p><p>Genetics</p><p>COI</p><p>No data.</p><p>Nuclear No data.</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FF4ED885975CFB58FD79FDC5	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF4FD8859756FD93FB8FF835.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura hartigi (Saarinen 1950)	<div><p>219  Euura hartigi (Saarinen, 1950)</p><p>Fig. 238</p><p>Amauronematus hartigi Saarinen, 1950a: 19–22 .</p><p>Amauronematus glacialis Saarinen, 1950b: 45–47 . Primary homonym of  Amauronematus glacialis Jakowlew, 1891 [=  Euura abnormis (Holmgren, 1883)]. Syn. nov.</p><p>Amauronematus arvii Vikberg, 1982: 63 . Replacement name for  Amauronematus glacialis Saarinen, 1950 .</p><p>Diagnosis</p><p>Pale colouration and lancet (ventral margin apically distinctly convex) enable identification of the species. No males have been associated.</p><p>Type material examined</p><p>Holotype  Amauronematus hartigi</p><p>GERMANY – Niedersachsen • ♀; Harz, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=10.3&amp;materialsCitation.latitude=51.867" title="Search Plazi for locations around (long 10.3/lat 51.867)">Lautenthal</a>; 51.867° N, 10.300° E; 29 May 1837; W. Saxesen leg.; ZSM, GBIF-GISHym3677.</p><p>Holotype  Amauronematus glacialis</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=25.98&amp;materialsCitation.latitude=69.61" title="Search Plazi for locations around (long 25.98/lat 69.61)">Inari Lapland</a> • ♀; Utsjoki, Outakoski; 69.61° N, 25.98° E; 9 Jun. 1947; A. Saarinen leg.; MZH, http://id.luomus.fi/GL.2495.</p><p>Host plants</p><p>Salix aurita (Schmidt 1997) and possibly some other species of  Salix, because  S. aurita is not present in Utsjoki (type locality of  Amauronematus glacialis).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 (DEIGISHym80673).</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, France, and Germany.</p></div>	https://treatment.plazi.org/id/03BCA619FF4FD8859756FD93FB8FF835	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF40D88B975FFEEEFEBCFC5F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura histrio (Serville 1823) ZMUO.	<div><p>220  Euura histrio (Serville, 1823)</p><p>Figs 239, 459</p><p>Nematus histrio Serville, 1823: 65 . Syntypes ♀♀, not examined [A potential syntype is in MNNP: Lacourt 2000]. Type locality: France, Paris.</p><p>Nematus rufescens Hartig, 1837: 191–192 . Lectotype designated by Schmidt (1997). Synonymy by Konow (1895).</p><p>Nematus fur Walsh, 1866: 263 . Holotype ♂, destroyed (Sheppard 2004). Type locality not specified, but apparently USA, Illinois. Doubtful synonym (Zinovjev &amp; Smith 2000).</p><p>Nematus glenelgensis Cameron, 1882: 535–536 . Syntypes ♀♀ (BMNH?), not examined. Type locality: United Kingdom, Scotland, Lochalsh, Glenelg. Synonymy by Konow (1895).</p><p>Amauronematus histrio var. nigrescens Enslin, 1915: 375 . Lectotype designated below.</p><p>Amauronematus histrio var. rubens Enslin, 1915: 375 . Syntypes ♀♀, no specimens located. Type locality: not stated.</p><p>Amauronematus histrio var. fallaciosus Enslin, 1918: 735 .</p><p>Diagnosis</p><p>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 .</p><p>Female</p><p>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.</p><p>Male</p><p>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.</p><p>Type material examined</p><p>Lectotype  Nematus rufescens</p><p>GERMANY • ♀; Berlin area; 52° N, 13° E; ZSM, GBIF-GISHym3049.</p><p>Lectotype  Amauronematus histrio var. nigrescens, here designated</p><p>GERMANY – Bayern • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=10.98&amp;materialsCitation.latitude=49.58" title="Search Plazi for locations around (long 10.98/lat 49.58)">Erlangen</a>; 49.58° N, 10.98° E; 13 Apr. 1914; E. Enslin leg.; ZSM, GBIFGISHym3689  .</p><p>Holotype  Amauronematus histrio var. fallaciosus</p><p>GERMANY – Bayern • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=10.138&amp;materialsCitation.latitude=50.131" title="Search Plazi for locations around (long 10.138/lat 50.131)">Ebenhausen</a>; 50.131° N, 10.138° E; 8 Apr. 1912; ZSM, GBIF-GISHym3688.</p><p>Host plants</p><p>Salix caprea,  S. aurita,  S. cinerea L. (Schmidt 1997).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 (DEIGISHym80673).</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Bulgaria, Estonia, Finland, France, Germany, and the United Kingdom.</p></div>	https://treatment.plazi.org/id/03BCA619FF40D88B975FFEEEFEBCFC5F	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF41D88B9754FC1AFD76F803.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura nigrina (Schmidt 1997)	<div><p>221  Euura nigrina (Schmidt, 1997)</p><p>Fig. 240</p><p>Amauronematus nigrinus Schmidt, 1997: 286–287 .</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Holotype  Amauronematus nigrinus</p><p>NORWAY – Finnmark • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=28.17&amp;materialsCitation.latitude=70.2" title="Search Plazi for locations around (long 28.17/lat 70.2)">Tana Bru</a>; 70.20° N, 28.17° E; 6 Jun. 1991; S. Schmidt leg.; MZH, http://id.luomus.fi/GL.2494.</p><p>Host plants</p><p>Salix lanata (Schmidt 1997) .</p><p>Genetics</p><p>COI</p><p>No data.</p><p>Nuclear No data.</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Norway.</p></div>	https://treatment.plazi.org/id/03BCA619FF41D88B9754FC1AFD76F803	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF42D8889733FEEEFC10F89F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura nuorbinjargi (Saarinen 1949)	<div><p>222  Euura nuorbinjargi (Saarinen, 1949)</p><p>Figs 241, 460</p><p>Amauronematus nuorbinjargi Saarinen, 1949: 55–62 .</p><p>Diagnosis</p><p>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 .</p><p>Female</p><p>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.</p><p>Male</p><p>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.</p><p>Type material examined</p><p>Holotype  Amauronematus nuorbinjargi</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=25.97&amp;materialsCitation.latitude=69.6" title="Search Plazi for locations around (long 25.97/lat 69.6)">Inari Lapland</a> • ♀; Utsjoki, Nuorbinjarg; 69.60° N, 25.97° E; 23 Jun. 1947; A. Saarinen leg.; MZH, http://id.luomus.fi/GL.2588.</p><p>Host plants</p><p>Salix hastata L.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF42D8889733FEEEFC10F89F	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF42D889973DF8DAFD75FA97.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura propinquator Schmidt 2014	<div><p>223  Euura propinquator Schmidt, 2014</p><p>Fig. 237</p><p>Amauronematus propinquus Saarinen, 1950b: 60–62 .Secondary homonym of  Cryptocampus propinquus Rohwer, 1909 [=  Euura propinqua (Rohwer, 1909)].  Euura propinquator Schmidt, 2014 in Prous et al. 2014: 53. Replacement name for  Amauronematus propinquus .</p><p>Diagnosis</p><p>Ventrally concave lancet and lamnium 1.3 times as long as radix (n = 2) distinguishes  E. propinquator from the others in the  histrio group.</p><p>Type material examined</p><p>Holotype  Amauronematus propinquus</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=24.44&amp;materialsCitation.latitude=60.72" title="Search Plazi for locations around (long 24.44/lat 60.72)">Häme</a> • ♀; Loppi; 60.72° N, 24.44° E; 1 Jun. 1941; A. Saarinen leg.; MZH, http://id.luomus. fi/GL.2514.</p><p>Notes</p><p>Best morphological match: DEI-GISHym84201.</p><p>Host plants</p><p>Salix repens rosmarinifolia (L.) Hartman Fil. (Schmidt 1997).</p><p>Genetics</p><p>COI</p><p>Only one sequence available. The nearest neighbour, diverging by a minimum of 0.61%, is an unidentified  Euura specimen from Oregon, USA (DEI-GISHym12539).</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland.</p></div>	https://treatment.plazi.org/id/03BCA619FF42D889973DF8DAFD75FA97	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF43D88E974EFAA2FC03F9EB.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura rufa (Konow 1896)	<div><p>224  Euura rufa (Konow, 1896)</p><p>Figs 242, 461–462</p><p>Nematus exoletus Eversmann, 1847: 19 . Lectotype designated below. Syn. nov. Nomen oblitum.  Amauronematus rufus Konow, 1896: 161 . Lectotype designated by Muche (1975). Nomen protectum.</p><p>In accordance with Article 23.9.1 of the International Code of Zoological Nomenclature (ICZN 1999), we retain the junior name  rufa 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  exoletus has not been used as valid since 1899. Examples of use of  rufus or  rufa as the valid name for this taxon during the last fifty years: Lindqvist 1974b; Muche 1975; Zhelohovcev 1976b; Verzhutskii 1981; Kangas 1985; Viitasaari &amp; Vikberg 1985; Vikberg 1988; Zhelochovtsev 1988; Liston 1995, 1997; Zhelochovtsev &amp; Zinovjev 1995; Schmidt 1997; Lacourt 1999, 2020; Haris 2002; Nuorteva &amp; Nuorteva 2003; Taeger et al. 2006, 2010; Lelej &amp; Taeger 2007; Sundukov &amp; Lelej 2012; Macek &amp; Kula 2014; Sundukov 2017b; Macek et al. 2020; Verheyde et al. 2021; Liston et al. 2023: fig. 1.</p><p>Diagnosis</p><p>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.</p><p>Female</p><p>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-GISHym80679, ZMUO.037286).</p><p>Male 6.5–7.5 mm.</p><p>Type material examined</p><p>Lectotype  Amauronematus rufus</p><p>RUSSIA – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=104.24&amp;materialsCitation.latitude=52.29" title="Search Plazi for locations around (long 104.24/lat 52.29)">Irkutskaja oblast</a> • ♀; Irkutsk; 52.29° N, 104.24° E; B.E. Jakowleff leg.; SDEI, DEIGISHym12529.</p><p>Lectotype  Nematus exoletus, here designated</p><p>RUSSIA • ♀; in promontoriis Uralensibus [in the foothills of the Ural]; ZMHB, GBIF-GISHym2770.</p><p>Host plants</p><p>Salix pentandra .</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, and Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FF43D88E974EFAA2FC03F9EB	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF44D88F9753F96EFC10F9F6.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura schlueteri (Enslin 1915)	<div><p>225  Euura schlueteri (Enslin, 1915)</p><p>Figs 243, 463</p><p>Amauronematus schlueteri Enslin, 1915: 405–406 . Lectotype designated by Schmidt (1997).</p><p>Amauronematus lundbohmi Malaise, 1921b: 119–120 . Lectotype designated below. Synonymy by Lindqvist (1941b).</p><p>Amauronematus uliginosae Malaise, 1921b: 122–123 . Lectotype designated below. Synonymy by Lindqvist (1941b).</p><p>Amauronematus squamosus Lindqvist, 1959d: 14 . Holotype ♀ (http://id.luomus.fi/GL.2775, MZH), not examined. Type locality: Finland, Utsjoki Outakoski. Synonymy by Benson (1962).</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Lectotype  Amauronematus schlueteri</p><p>SWEDEN – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=17.45&amp;materialsCitation.latitude=66.96" title="Search Plazi for locations around (long 17.45/lat 66.96)">Lule Lappmark</a> • ♀; Njunjes; 66.96° N, 17.45° E; 30 Jun. 1914; Schlüter leg.; ZSM, GBIF-GISHym3056.</p><p>Lectotype  Amauronematus lundbohmi, here designated</p><p>SWEDEN – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=19.74&amp;materialsCitation.latitude=68.22" title="Search Plazi for locations around (long 19.74/lat 68.22)">Torne Lappmark</a> • ♀; Torneträsk; 68.22° N, 19.74° E; 400 m a.s.l.; R. Malaise leg.; NHRS, NHRS-HEVA000003924.</p><p>Notes</p><p>Sawsheath about 0.9–1.0 times as long as hind femur with trochantellus in the lectotype.</p><p>Lectotype  Amauronematus uliginosae, here designated</p><p>SWEDEN – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=18.35&amp;materialsCitation.latitude=59.42" title="Search Plazi for locations around (long 18.35/lat 59.42)">Uppland</a> • ♀; Resarö; 59.42° N, 18.35° E; R. Malaise leg.; NHRS, NHRS-HEVA000003929.</p><p>Notes</p><p>Sawsheath of lectotype about 0.8–0.9 times as long as hind femur with trochantellus.</p><p>Host plants</p><p>Vaccinium myrtillus,  V. uliginosum (Schmidt 1997) .</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF44D88F9753F96EFC10F9F6	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF45D88C9706F941FBE8F900.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura septentrionalis (Saarinen 1950) ZMUO.	<div><p>226  Euura septentrionalis (Saarinen, 1950)</p><p>Figs 249, 464</p><p>Amauronematus septentrionalis Saarinen, 1950b: 54–58 .</p><p>Nematus taiganus Zhelochovtsev, 1988: 98 . Synonymy by Schmidt (1997).</p><p>Diagnosis</p><p>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 .</p><p>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).</p><p>Type material examined</p><p>Holotype  Amauronematus septentrionalis</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=25.98&amp;materialsCitation.latitude=69.61" title="Search Plazi for locations around (long 25.98/lat 69.61)">Inari Lapland</a> • ♀; Utsjoki, Outakoski; 69.61° N, 25.98° E; 10 Jun. 1947; A. Saarinen leg.; MZH, http://id.luomus.fi/GL.2776.</p><p>Holotype  Nematus taiganus</p><p>RUSSIA – Magadan oblast • ♀; Magadan; 59.56° N, 150.82° E; 16 Jun. 1963; A. Zhelochovtsev leg.; ZIN, DEI-GISHym89536.</p><p>Notes</p><p>The holotype of  taiganus resembles the holotype of  septentrionalis very closely.</p><p>Host plants</p><p>Betula nana .</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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).</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Norway, Russia, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF45D88C9706F941FBE8F900	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF46D88D9727F948FE3DF940.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura stenogaster (Forster 1854)	<div><p>227  Euura stenogaster (Förster, 1854)</p><p>Figs 244, 465</p><p>Nematus stenogaster Förster, 1854a: 339–341 . Neotype designated by Schmidt (1997).</p><p>Nematus trifurcatus W.F. Kirby, 1882: 148–149 . Syntypes ♀♀ (BMNH), not examined. Type locality: Canada, Hudson Bay.</p><p>Amauronematus analis Konow, 1897: 178 . Lectotype designated by Schmidt (1997). Synonymy by Lindqvist (1972).</p><p>Amauronematus vescus MacGillivray, 1921b: 30 . Holotype ♀ (INHS), not examined. Type locality: USA, Maine, Orono.</p><p>Amauronematus veneficus MacGillivray, 1923b: 169 . Holotype ♀ (INHS), not examined. Type locality: USA, Alaska, Katmai.</p><p>Amauronematus festivus Saarinen, 1950b: 58–60 . Synonymy by Schmidt (1997).</p><p>Diagnosis</p><p>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.</p><p>Female</p><p>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-GISHym4855, ZMUO.030855).</p><p>Type material examined</p><p>Neotype  Nematus stenogaster</p><p>GERMANY • ♀; Berlin area; 52° N, 13° E; C. Schirmer leg.; ZSM, GBIF-GISHym3057.</p><p>Lectotype  Amauronematus analis</p><p>RUSSIA – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=104.24&amp;materialsCitation.latitude=52.29" title="Search Plazi for locations around (long 104.24/lat 52.29)">Irkutskaja oblast</a> • ♂; Irkutsk; 52.29° N, 104.24° E; SDEI, GBIF-GISHym4091.</p><p>Holotype  Amauronematus festivus</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=24.44&amp;materialsCitation.latitude=60.72" title="Search Plazi for locations around (long 24.44/lat 60.72)">Häme</a> • ♀; Loppi; 60.72° N, 24.44° E; 22 May 1943; A. Saarinen leg.; MZH, http://id.luomus.fi/GL.3367.</p><p>Host plants</p><p>Salix repens,  S. aurita .</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Germany, and Russia. The records from North America require confirmation.</p></div>	https://treatment.plazi.org/id/03BCA619FF46D88D9727F948FE3DF940	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF47D8B39746F917FBF9FAB3.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura striata (Hartig 1837)	<div><p>228  Euura striata (Hartig, 1837)</p><p>Figs 246–247, 466–468</p><p>Nematus striatus Hartig, 1837: 191 . Lectotype designated by Saarinen (1950b).</p><p>Amauronematus subnitens Saarinen, 1950b: 49–54 . Syn. nov.</p><p>Amauronematus mimus Schmidt, 1997: 285–286 . Secondary homonym of  Pteronus mimus Konow, 1903 [=  Euura mimus (Konow, 1903)]. Syn. nov.</p><p>Amauronematus subfuscus 
Schmidt, 1997: 294 . Holotype ♀ (http://id.luomus.fi/GL.3732, MZH). Type locality:  Toivakka [688: 45], Finland. Syn. nov.</p><p>Euura mimator Schmidt, 2014 in Prous et al. 2014: 52. Replacement name for  Amauronematus mimus Schmidt, 1997 .</p><p>Diagnosis</p><p>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-GISHym80673 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 .</p><p>Lamnium 1.4 times as long as radix (straight or slightly ventrally convex; ZMUO.035392),?1.4–1.5 (GBIF-GISHym3058), 1.5–1.6 (DEI-GISHym21340), 1.6 (DEI-GISHym12566, DEI-GISHym84235, GL.3827), 1.6–1.7 (DEI-GISHym84211, DEI-GISHym12022).</p><p>Type material examined</p><p>Lectotype  Nematus striatus</p><p>GERMANY • ♀; Berlin area; 52° N, 13° E; ZSM, GBIF-GISHym3058.</p><p>Holotype  Amauronematus subnitens</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=25.98&amp;materialsCitation.latitude=69.61" title="Search Plazi for locations around (long 25.98/lat 69.61)">Inari Lapland</a> • ♀; Utsjoki, Outakoski; 69.61° N, 25.98° E; 21 Jun. 1947; A. Saarinen leg.; MZH, http://id.luomus.fi/GL.3369.</p><p>Notes</p><p>Lancet most similar to  E. amicula (lamnium 2 times as long as radix based on Schmidt 1997), otherwise most similar to  E. striata (DEI-GISHym84235, ZMUO.035556).</p><p>Holotype  Amauronematus mimus</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=24.272&amp;materialsCitation.latitude=61.335" title="Search Plazi for locations around (long 24.272/lat 61.335)">Häme</a> • ♀; Pälkäne; 61.335° N, 24.272° E; 22 May 1965; J. Kangas leg.; MZH, http://id.luomus.fi/GL.2513.</p><p>Notes</p><p>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.</p><p>Holotype  Amauronematus subfuscus</p><p>FINLAND – Central Finland • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=26.082&amp;materialsCitation.latitude=62.098" title="Search Plazi for locations around (long 26.082/lat 62.098)">Toivakka</a> [688: 45]; 62.098° N, 26.082° E; 6 Jun. 1973; E. Tiihonen leg.; MZH, http://id.luomus.fi/GL.3732.</p><p>Notes</p><p>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.</p><p>Host plants</p><p>Salix aurita (Schmidt 1997),  S. caprea,  S. myrsinifolia,  S. phylicifolia .</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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-GISHym31412 ( E. striata) that have only NaK and POL2 available. The heterozygous positions are not identical though. There is one fixed and several almost fixed differences between the species in the HSP90 h1 gene.</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Germany, Russia, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF47D8B39746F917FBF9FAB3	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF79D8B0975FFA86FC10FD5F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura tenuis (Schmidt 1997)	<div><p>229  Euura tenuis (Schmidt, 1997)</p><p>Figs 248, 469</p><p>Amauronematus tenuis Schmidt, 1997: 295–296 .</p><p>Diagnosis</p><p>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).</p><p>Type material examined</p><p>Holotype  Amauronematus tenuis</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=27.01&amp;materialsCitation.latitude=69.76" title="Search Plazi for locations around (long 27.01/lat 69.76)">Inari Lapland</a> • ♀; Kevo; 69.76° N, 27.01° E; 7 Jul. 1989; S. Schmidt leg.; MZH, http://id.luomus.fi/GL.3370.</p><p>Host plants</p><p>Salix glauca,  S. lapponum, and possibly  S. lanata (Schmidt 1997) .</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 (DEIGISHym31412). See notes under  Euura striata .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, and Norway.</p></div>	https://treatment.plazi.org/id/03BCA619FF79D8B0975FFA86FC10FD5F	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF7AD8B09748FD1AFC10F816.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura tota (Saarinen 1950)	<div><p>230  Euura tota (Saarinen, 1950)</p><p>Figs 245, 470</p><p>Amauronematus histrio ab.  totus Lindqvist, 1941a: 67 . Infrasubspecific and therefore unavailable name.</p><p>Amauronematus totus Saarinen, 1950b: 58 . Holotype ♀ not found in MZAT or MZH, possibly lost. Type locality: Finland, Suomussalmi.</p><p>Diagnosis</p><p>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-GISHym84215, 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 .</p><p>The blunt valvula 3 in lateral view and pointed and smooth scutellum are shared with and typical for  histrio (Lindqvist 1941a: 67) . There is an empty place with a label  “ totus ” and no pin holes in the MZAT collection (Anssi Teräs pers. com.).</p><p>Host plants</p><p>Salix lapponum .</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF7AD8B09748FD1AFC10F816	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF7BD8B794C8FEEEFC13FD0D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura histriato Prous, Liston & Mutanen 2025	<div><p>231  Euura histriato Prous, Liston &amp; Mutanen sp. nov.</p><p>urn:lsid:zoobank.org:act: DF55C684-1E05-4B81-9BBF-4C9B3893E1F1</p><p>Figs 85, 252</p><p>Diagnosis</p><p>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-GISHym12305]) distinguishes the species from the others in the  histrio group.</p><p>Etymology</p><p>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.</p><p>Type material</p><p>Holotype</p><p>BULGARIA – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=23.586&amp;materialsCitation.latitude=42.257" title="Search Plazi for locations around (long 23.586/lat 42.257)">Rila Mts</a> • ♀; 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-GISHym12305.</p><p>Paratypes</p><p>BULGARIA – Rila Mts • 1 ♀; same data as for holotype; SDEI, DEI-GISHym12309 .</p><p>FINLAND – Regio aboensis • 2 ♀♀; Rymättylä, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=21.9766&amp;materialsCitation.latitude=60.3114" title="Search Plazi for locations around (long 21.9766/lat 60.3114)">Aaslaluoto</a>; 60.3114° N, 21.9766° E; 14 Jul. 2017 [larvae]; M. Mutanen leg.; ex larvae  Salix caprea; ZMUO, ZMUO.033823, ZMUO.033826  .</p><p>A female specimen from Norway (bf-sym-00517 in BOLD) that has an identical barcode sequence might also belong to this species.</p><p>Description</p><p>Female</p><p>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.</p><p>Male</p><p>Unknown.</p><p>Host plants</p><p>Salix caprea .</p><p>Genetics</p><p>COI</p><p>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:AEA4613.</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Bulgaria and Finland.</p></div>	https://treatment.plazi.org/id/03BCA619FF7BD8B794C8FEEEFC13FD0D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF7DD8B7971EFCAAFB54F86D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura aceroserra Taeger & Blank 2014	<div><p>233  Euura aceroserra Taeger &amp; Blank, 2014</p><p>Figs 253, 492</p><p>Amauronematus acutiserra Lindqvist, 1974b: 19 . Secondary homonym of  Pontania acutiserra Lindqvist, 1949 [=  Euura acutiserra (Lindqvist, 1949)].</p><p>Euura aceroserra Taeger &amp; Blank, 2014 in Prous et al. 2014: 52. Replacement name for  Amauronematus acutiserra Lindqvist, 1974 .</p><p>Diagnosis</p><p>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 .</p><p>Type material examined</p><p>Holotype  Amauronematus acutiserra</p><p>NORWAY – Troms • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=20.72&amp;materialsCitation.latitude=69.2" title="Search Plazi for locations around (long 20.72/lat 69.2)">Helligskogen</a>; 69.20° N, 20.72° E; 19 Jun. 1967; O. Ranin leg.; MZH, http://id.luomus.fi/GL.5117.</p><p>Host plants</p><p>Salix sp. based on ex larva reared female ZMUO.043917.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>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.</p></div>	https://treatment.plazi.org/id/03BCA619FF7DD8B7971EFCAAFB54F86D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF7DD8B79763FD4DFBB4FCAE.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura humeralis (Serville 1823)	<div><p>232  Euura humeralis group</p><p>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.</p></div>	https://treatment.plazi.org/id/03BCA619FF7DD8B79763FD4DFBB4FCAE	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF7ED8B49729FEEEFAC1FB7F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura humeralis (Serville 1823)	<div><p>234  Euura humeralis (Serville, 1823)</p><p>Figs 254, 493</p><p>Nematus humeralis Serville, 1823: 68 . No types found in MNHN (Lacourt 2000). Type locality: France, Soissonnais.</p><p>Nematus incanus Förster, 1854a: 302–304 . Lectotype designated below. Synonymy by Konow (1895).</p><p>Diagnosis</p><p>Very similar to  E. aceroserra, see differences discussed under that species.</p><p>Type material examined</p><p>Lectotype  Nematus incanus, here designated</p><p>GERMANY – Nordrhein-Westfalen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.09&amp;materialsCitation.latitude=50.77" title="Search Plazi for locations around (long 6.09/lat 50.77)">Aachen area</a>; 50.77° N, 6.09° E; ZSM, GBIF-GISHym3050.</p><p>Host plants</p><p>Salix spp. such as  S. aurita (Kontuniemi 1960),  S. caprea (Kangas 1985),  S. cinerea (Benander 1966),  S. starkeana Willd.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Austria, Bulgaria, Finland, France, Germany, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF7ED8B49729FEEEFAC1FB7F	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF7ED8B49760FAFBFC74F940.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura longiserra (Thomson 1863)	<div><p>235  Euura longiserra group</p><p>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.</p></div>	https://treatment.plazi.org/id/03BCA619FF7ED8B49760FAFBFC74F940	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF7ED8B5973EF908FF76F818.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura abnormis (Holmgren 1883)	<div><p>236  Euura abnormis (Holmgren, 1883)</p><p>Figs 255, 494</p><p>Nematus abnormis Holmgren, 1883: 148, pl. 3 fig. 16. Syntypes ♀♀ (NHRS), not examined. Type locality: Russia, Novaja Zemlya, Besimannija Bay.</p><p>Amauronematus glacialis Jakowlew, 1891: 26–27 . Syn. nov.</p><p>Amauronematus tolli Konow, 1907: 20–21, 24, pl. Lectotype designated by Muche (1975). Synonymy by Benson (1960).</p><p>Amauronematus aulatus MacGillivray, 1919: 16–17 . Synonymy by Benson (1962).</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Holotype  Amauronematus glacialis</p><p>RUSSIA • ♀; Novaja Zemlya; Grinewetski leg.; ZIN, DEI-GISHym30222.</p><p>Lectotype  Amauronematus tolli</p><p>RUSSIA • ♀;  Siber. bor. or. [north-east Siberia:  around mouth of the River Lena, and from the New Siberian Islands]; SDEI, GBIF-GISHym4085.</p><p>Holotype  Amauronematus aulatus</p><p>USA – Alaska • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-143.663&amp;materialsCitation.latitude=70.121" title="Search Plazi for locations around (long -143.663/lat 70.121)">Barter Island</a>; 70.121° N, 143.663° W; 16 Jun. 1914; D. Jenness leg.; CNC, CNC957884.</p><p>Host plants</p><p>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-GISHym80086) 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.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Holarctic. Specimens studied are from Finland, Norway, Russia, Sweden, United Kingdom, and the USA.</p></div>	https://treatment.plazi.org/id/03BCA619FF7ED8B5973EF908FF76F818	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF70D8BA9743FEEEFC03F91F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura eiteli (Saarinen 1948) ZMUO.	<div><p>237  Euura eiteli (Saarinen, 1948)</p><p>Figs 260, 496</p><p>Amauronematus eiteli Saarinen, 1948: 82–83 .</p><p>Diagnosis</p><p>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-GISHym84213) 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-GISHym84213 does seem to be different (Fig. 496). The paravalva is basally about as broad as apically in DEI-GISHym84213, while basally narrower than apically in  E. longiserra,  E. munda, and  E. neglecta .</p><p>Type material examined</p><p>Holotype  Amauronematus eiteli</p><p>FINLAND – Central Finland • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=25.55&amp;materialsCitation.latitude=63.36" title="Search Plazi for locations around (long 25.55/lat 63.36)">Pihtipudas</a>; 63.36° N, 25.55° E; 7 Jun. 1945; A. Saarinen leg.; MZH, http://id.luomus.fi/GL.3375.</p><p>Host plants</p><p>Salix pentandra (Zinovjev &amp; Vikberg 1998; Nyman et al. 2006).</p><p>Genetics</p><p>COI</p><p>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-GISHym84213), 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 .</p><p>Nuclear</p><p>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-GISHym84213), 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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, and Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FF70D8BA9743FEEEFC03F91F	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF70D8BB9729F95AFB8DFBA5.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura longicauda (Hellen 1948)	<div><p>238  Euura longicauda (Hellén, 1948)</p><p>Figs 256, 495</p><p>Nematus (Amauronematus) longicauda Hellén, 1948: 113–114 . Lectotype designated below.</p><p>Diagnosis</p><p>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).</p><p>Type material examined</p><p>Lectotype  Nematus (Amauronematus) longicauda, here designated</p><p>FINLAND – Lapin Lääni • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=20.81&amp;materialsCitation.latitude=69.04" title="Search Plazi for locations around (long 20.81/lat 69.04)">Kilpisjärvi</a>; 69.04° N, 20.81° E; W. Hellén leg; MZH, http://id.luomus. fi/GL.3377  .</p><p>Host plants</p><p>Salix glauca,  S. lanata (Zinovjev &amp; Vikberg 1998) .</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Norway, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF70D8BB9729F95AFB8DFBA5	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF71D8B8973FFBB5FAFEFE5E.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura longiserra (Thomson 1863)	<div><p>239  Euura longiserra (Thomson, 1863)</p><p>Figs 257, 497</p><p>Nematus longiserra Thomson, 1863: 632 . Lectotype designated by Saarinen (1948).</p><p>Nematus leucodous Zaddach, 1884 in Brischke 1884: 132. Holotype ♂, probably destroyed (Blank &amp; Taeger 1998). Type locality: Russia, Kaliningradskaya oblast, Wohlfr.-Zinten [Kornevo]. Synonymy by Konow (1890).</p><p>Diagnosis</p><p>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).</p><p>Type material examined</p><p>Lectotype  Nematus longiserra</p><p>SWEDEN – Skåne • ♀; Kungsmarken, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=13.34&amp;materialsCitation.latitude=55.72" title="Search Plazi for locations around (long 13.34/lat 55.72)">Södra Sandby</a>; 55.72° N, 13.34° E; MZLU, MZLU2017292.</p><p>Host plants</p><p>Salix aurita,  S. caprea (Zinovjev &amp; Vikberg 1998),  S. cinerea (Roller &amp; Macek 2017; this study), and  S. starkeana .</p><p>Genetics</p><p>COI</p><p>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-GISHym84213),  E. munda, and  E. neglecta .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Bulgaria, Finland, Germany, Sweden, and the United Kingdom.</p></div>	https://treatment.plazi.org/id/03BCA619FF71D8B8973FFBB5FAFEFE5E	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF72D8B8975EFE1AFB8FF996.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura munda (Konow 1895) PR.	<div><p>240  Euura munda (Konow, 1895)</p><p>Figs 259, 498</p><p>Amauronematus mundus Konow, 1895: 167, 172–173. Lectotype designated below.</p><p>Diagnosis</p><p>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 .</p><p>Type material examined</p><p>Lectotype  Amauronematus mundus, here designated</p><p>GERMANY – Brandenburg • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=13.03&amp;materialsCitation.latitude=52.56" title="Search Plazi for locations around (long 13.03/lat 52.56)">Finkenkrug</a>; 52.56° N, 13.03° E; 30 m a.s.l.; SDEI, GBIF-GISHym4096.</p><p>Host plants</p><p>Salix repens, including  S. repens rosmarinifolia .</p><p>Genetics</p><p>COI</p><p>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-GISHym84213),  E. longiserra, and  E. neglecta .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, France, and Germany.</p></div>	https://treatment.plazi.org/id/03BCA619FF72D8B8975EFE1AFB8FF996	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF72D8B99720F9A2FC6BFA83.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura neglecta (W. F. Kirby 1882) ZMUO.	<div><p>241  Euura neglecta (W.F. Kirby, 1882)</p><p>Figs 258, 499–500</p><p>Nematus neglectus W.F. Kirby, 1882: 147 . Syntypes ♀ ♂ (BMNH), not examined. Type locality: Canada, Hudson Bay, St Martin’s Falls.</p><p>Amauronematus spiniserra Malaise, 1921b: 119 . Synonymy by Lindqvist (1972).</p><p>Amauronematus intermedius Malaise, 1931b: 39–40 . Lectotype designated by Saarinen (1948). Synonymy by Benson (1962).</p><p>Diagnosis</p><p>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 .</p><p>Type material examined</p><p>Holotype  Amauronematus spiniserra</p><p>SWEDEN – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=19.74&amp;materialsCitation.latitude=68.22" title="Search Plazi for locations around (long 19.74/lat 68.22)">Torne Lappmark</a> • ♀; Torneträsk; 68.22° N, 19.74° E; 400 m a.s.l.; R. Malaise leg.; NHRS, NHRS-HEVA000003851.</p><p>Lectotype  Amauronematus intermedius</p><p>RUSSIA – Kamchatka oblast • ♀; Nischne-Kamtchatsk, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=161.893&amp;materialsCitation.latitude=56.166" title="Search Plazi for locations around (long 161.893/lat 56.166)">Lake Azhabachye</a>; 56.166° N, 161.893° E; R. Malaise leg.; NHRS, NHRS-HEVA000006362.</p><p>Host plants</p><p>Salix phylicifolia . According to Kangas (1985) also  S. aurita and  S. pentandra .</p><p>Genetics</p><p>COI</p><p>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-GISHym84213), and  E. longiserra .</p><p>Nuclear</p><p>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 (DEIGISHym84213).</p><p>Distribution and material examined</p><p>Holarctic. Specimens studied are from Finland, Russia, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF72D8B99720F9A2FC6BFA83	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF73D8B99774FAD5FECDF964.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura opacipleuris (Konow 1895)	<div><p>242  Euura opacipleuris group</p><p>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.</p></div>	https://treatment.plazi.org/id/03BCA619FF73D8B99774FAD5FECDF964	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF73D8BE973EF8F2FB8FFB36.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura opacipleuris (Konow 1895)	<div><p>243  Euura opacipleuris (Konow, 1895)</p><p>Figs 261–262, 472</p><p>Amauronematus opacipleuris Konow, 1895: 176 . Lectotype designated by Oehlke &amp; Wudowenz (1984).</p><p>Diagnosis</p><p>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-GISHym12561, W17802) have clearly or somewhat longer setae (as in  E. stordalensis) than the specimen mentioned by Vikberg (1970a), 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.</p><p>Type material examined</p><p>Lectotype  Amauronematus opacipleuris</p><p>AUSTRIA • ♂; Tirol; SDEI, GBIF-GISHym4098.</p><p>Host plants</p><p>Salix reticulata L. (sequenced larva), and possibly other species of dwarf willow (Lacourt 1999).</p><p>Genetics</p><p>COI</p><p>Based on 3 specimens, maximum within-species distance is 4.1% and the nearest neighbour, diverging by a minimum of 0%, is  Euura variator .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Austria, Italy, and Switzerland.</p></div>	https://treatment.plazi.org/id/03BCA619FF73D8BE973EF8F2FB8FFB36	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF74D8BF9724FB02FBE9FB2B.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura stordalensis (Strand 1905)	<div><p>244  Euura stordalensis (Strand, 1905)</p><p>Figs 263, 473</p><p>Nematus stordalensis Strand, 1905: 7–8 . Lectotype designated by Vikberg (1970a).</p><p>Nematus marginifer Strand, 1905: 8 . Synonymy by Benson (1962).</p><p>Amauronematus cogitatus MacGillivray, 1919: 15–16 . Synonymy by Benson (1962).</p><p>Amauronematus speciosus Hellén, 1951b: 106–107 . Lectotype designated by Vikberg (1970a). Syn. nov.</p><p>Diagnosis</p><p>Closely related to  E. opacipleuris, see differences mentioned under that species.</p><p>Type material examined</p><p>Lectotype  Nematus stordalensis</p><p>CANADA – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-81.7&amp;materialsCitation.latitude=77.9" title="Search Plazi for locations around (long -81.7/lat 77.9)">Ellesmere Island</a> • ♀; Havnefjorden, Havnen; 77.9° N, 81.7° W; 18 Jun. 1900; ZMUN, NHMO:1000200592 / PR316VV.</p><p>Notes</p><p>Length 6.7 mm. Best morphological match is N13682 (about 6 mm and slightly darker).</p><p>Holotype  Nematus marginifer</p><p>CANADA – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-81.7&amp;materialsCitation.latitude=77.9" title="Search Plazi for locations around (long -81.7/lat 77.9)">Ellesmere Island</a> • ♂; Beistadfjorden (Bunden av Kjödfjorden); 77.9° N, 81.7° W; 9 Jun. 1899; Simmons leg.; ZMUN, NHMO:1000199953 / PR317VV.</p><p>Notes</p><p>Penis valve (Vikberg 1970a: fig. 7) not distinguishable from European specimens (e.g., DEIGISHym12097).</p><p>Holotype  Amauronematus cogitatus</p><p>USA – Alaska • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-141.233&amp;materialsCitation.latitude=69.648" title="Search Plazi for locations around (long -141.233/lat 69.648)">Demarcation Point</a>; 69.648° N, 141.233° W; 14 May 1914; F. Johansen leg.; emerged from cocoon 23 Jun. 1914; CNC, CNC1056982.</p><p>Lectotype  Amauronematus speciosus</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=23.999&amp;materialsCitation.latitude=68.1" title="Search Plazi for locations around (long 23.999/lat 68.1)">Kittilä Lapland</a> • ♀; Muonio, Pallastunturi; 68.100° N, 23.999° E; 22 Jun. 1942; W. Hellén leg.; MZH, http://id.luomus.fi/GL.2762.</p><p>Host plants</p><p>Salix herbacea and possibly other dwarf willows.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Holarctic. Specimens studied are from Canada, Finland, Norway, and the USA.</p></div>	https://treatment.plazi.org/id/03BCA619FF74D8BF9724FB02FBE9FB2B	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF75D8BF974CFB2EFDE4FAE5.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura punicea (Christ 1791) Prep.	<div><p>245  Euura punicea group s. str.</p><p>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 .</p></div>	https://treatment.plazi.org/id/03BCA619FF75D8BF974CFB2EFDE4FAE5	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF75D8BC9720FA74FB8DFB4C.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura berolinensis (Muche 1970) PR.	<div><p>246  Euura berolinensis (Muche, 1970)</p><p>Figs 273, 501</p><p>Pachynematus berolinensis Muche, 1970b: 105–107 .</p><p>Amauronematus clypeatus Lindqvist, 1975: 16–17 . Secondary homonym of  Pachynematus clypeatus Marlatt, 1896 [=  Euura clypeata (Marlatt, 1896)]. Syn. nov.</p><p>Amauronematus kevoensis Vikberg, 1980: 21–23 . Synonymy by Taeger &amp; Blank (1998).</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Holotype  Pachynematus berolinensis</p><p>GERMANY – Berlin • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=13.63&amp;materialsCitation.latitude=52.45" title="Search Plazi for locations around (long 13.63/lat 52.45)">Friedrichshagen</a>; 52.45° N, 13.63° E; May 1964; H. Adam leg.; reared ex larva on  Betula; SDEI, GBIF-GISHym3877.</p><p>Holotype  Amauronematus clypeatus</p><p>RUSSIA – Baikal • ♀;  Tjernorud; 22 May 1967; B.N. Verzhutskij leg.; MZH, http://id.luomus.fi/ GL.5125.</p><p>Holotype  Amauronematus kevoensis</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=27.01&amp;materialsCitation.latitude=69.76" title="Search Plazi for locations around (long 27.01/lat 69.76)">Inari Lapland</a> • ♀; Kevo; 69.76° N, 27.01° E; 2 Jul. 1971; T. Kontuniemi leg.; emerged 10 May 1972 ex larva on  Betula pubescens; MZH, PR.552VV.</p><p>Host plants</p><p>Betula pubescens and probably also at least  B. pendula . One generation per year.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Germany, and Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FF75D8BC9720FA74FB8DFB4C	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF76D8BD975EFB0BFB0BFB2A.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura punicea (Christ 1791) Prep.	<div><p>247  Euura punicea (Christ, 1791)</p><p>Figs 274, 502</p><p>Tenthredo nigrata Retzius, 1783: 73 . Described by indication on Degeer (1771: pl. 38 figs 2–4). Type material lost. Type locality: Sweden. Primary homonym of  Tenthredo nigrata O.F. Müller, 1776 [=  Dolerus (Poodolerus) nigratus (O.F. Müller, 1776)].</p><p>Tenthredo punicea Christ, 1791: 440–441 . Described by indication on Degeer (1771: pl. 38 figs 2–4). Type material lost. Type locality: Sweden.</p><p>Tenthredo crocea Fabricius, 1804: 39 . Syntypes, sex not stated. Type material probably lost. Type locality: France, Paris. Synonymy by Konow (1905b). Primary homonym of  Tenthredo crocea Geoffroy in Fourcroy, 1785 [=  Hemichroa crocea (Geoffroy, 1785)].</p><p>Nematus melanosternus Serville, 1823: 67 . Replacement name for  Tenthredo nigrata Retzius.</p><p>Nematus prototypus Förster, 1854a: 311–313 . Lectotype designated below. Synonymy by Konow (1902b).</p><p>Amauronematus excellens Forsius, 1921: 30–32 . Lectotype designated below. Synonymy by Taeger &amp; Blank (1998).</p><p>Diagnosis</p><p>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).</p><p>Type material examined</p><p>Lectotype  Nematus prototypus, here designated</p><p>GERMANY – Nordrhein-Westfalen • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.09&amp;materialsCitation.latitude=50.77" title="Search Plazi for locations around (long 6.09/lat 50.77)">Aachen area</a>; 50.77° N, 6.09° E; ZSM, GBIF-GISHym3055.</p><p>Lectotype  Amauronematus excellens, here designated</p><p>FINLAND – Uusimaa • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=23.723&amp;materialsCitation.latitude=60.243" title="Search Plazi for locations around (long 23.723/lat 60.243)">Karislojo</a> [Karjalohja]; 60.243° N, 23.723° E; 25–28 Jun. 1910; R. Forsius leg.; emerged 1911 ex larvae on  Salix caprea; ZSM, GBIF-GISHym3048.</p><p>Host plants</p><p>A wide spectrum of  Salix spp. One generation per year.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Bulgaria, Estonia, Finland, and Germany.</p></div>	https://treatment.plazi.org/id/03BCA619FF76D8BD975EFB0BFB0BFB2A	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF77D8A29754FB2DFC03FD02.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura ranini (Lindqvist 1960)	<div><p>248  Euura ranini (Lindqvist, 1960)</p><p>Figs 275–276, 503</p><p>Amauronematus ranini Lindqvist, 1960b: 33–34 .</p><p>Diagnosis</p><p>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-GISHym80671) are somewhat different, externally no significant differences can be observed. The penis valve drawn by Lindqvist (1971a) 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).</p><p>Type material examined</p><p>Holotype  Amauronematus ranini</p><p>FINLAND – Uusimaa • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=24.9&amp;materialsCitation.latitude=60.3" title="Search Plazi for locations around (long 24.9/lat 60.3)">Helsinge</a> [Vantaa]; 60.30° N, 24.90° E; 17 May 1959; O. Ranin leg.; MZH, http://id.luomus.fi/GL.2757.</p><p>Host plants</p><p>Populus tremula . One generation per year.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, and Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FF77D8A29754FB2DFC03FD02	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF68D8A2976FFD55FE0EFBE1.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura toeniata (Serville 1823) PR.	<div><p>249  Euura toeniata group</p><p>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.</p></div>	https://treatment.plazi.org/id/03BCA619FF68D8A2976FFD55FE0EFBE1	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF68D8A39742FB69FAD0FE50.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura ampla (Konow 1895) ZMUO.	<div><p>250  Euura ampla (Konow, 1895)</p><p>Figs 272, 478</p><p>Amauronematus amplus Konow, 1895: 184 . Lectotype designated by Muche (1975).</p><p>Diagnosis</p><p>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 .</p><p>Type material examined</p><p>Lectotype  Amauronematus amplus</p><p>GERMANY – Brandenburg • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=13.167&amp;materialsCitation.latitude=53.183" title="Search Plazi for locations around (long 13.167/lat 53.183)">Fürstenberg in Mecklenburg</a>; 53.183° N, 13.167° E; May 1887; F.W. Konow leg.; SDEI, GBIF-GISHym4089.</p><p>Host plants</p><p>Betula pendula B. pubescens (including  ssp. czerepanovii .</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Bulgaria, Finland, Germany, Russia, Slovakia, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF68D8A39742FB69FAD0FE50	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF69D8A19736FDE7FAD4FB70.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura obscuripes (Holmgren 1883)	<div><p>251  Euura obscuripes (Holmgren, 1883)</p><p>Figs 268–270, 481–482</p><p>Nematus obscuripes Holmgren, 1883: 144–145, pl. 1 fig. 5. Lectotype designated below.</p><p>Amauronematus poppii Konow, 1904a: 260–261 . Lectotype designated below. Secondary homonym of  Pontania poppii Konow, 1904 [ Euura poppii (Konow, 1904)]. Syn. nov.</p><p>Amauronematus humeralis var. rufomacula Malaise, 1931b: 44 . Lectotype designated below. Syn. nov.</p><p>Amauronematus variabilis var. sjoeblomi Malaise, 1931b: 43–44 . Lectotype designated below. Syn. nov.</p><p>Amauronematus tridentatus Malaise, 1931b: 48–49 . Syn. nov.</p><p>Amauronematus carbonarius Hellén, 1951a: 71–72 . Syn. nov.</p><p>Amauronematus enslini Lindqvist, 1959d: 8–9 . Secondary homonym of  Pontania enslini Zirngiebl, 1937 [ Euura crassipes (Thomson, 1871)]. Syn. nov.</p><p>Amauronematus obesus Lindqvist, 1959d: 11–12 . Syn. nov.</p><p>Amauronematus compactus Bogacheva, 1977: 87–88 . Lectotype ♀ (ZMMU), designated by Zinovjev &amp; Schmidt (1994), not examined. Type locality: Russia, Polar Urals, Kharp biological station. Syn. nov. 20 serrulae; lancet not distinguishable from, e.g., NHRS-HEVA000006389 and penis valve like, e.g., ZMUO.037203.</p><p>Euura bertilpoppii Heibo &amp; Liston, 2014 in Prous et al. 2014: 52. Replacement name for  Amauronematus poppii Konow, 1904 .</p><p>Euura bavarica Blank &amp; Liston, 2014 in Prous et al. 2014: 52. Replacement name for  Amauronematus enslini Lindqvist, 1959 .</p><p>Diagnosis</p><p>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-GISHym84010 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-GISHym84010. 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.</p><p>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 .</p><p>Type material examined</p><p>Lectotype  Nematus obscuripes, here designated</p><p>RUSSIA – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=55.6&amp;materialsCitation.latitude=73.3" title="Search Plazi for locations around (long 55.6/lat 73.3)">Novaja Zemlya</a> • ♀; Matotschkin Scharr [Matochkin Strait]; 73.3° N, 55.6° E; 1875; NHRS, NHRS-HEVA000006456.</p><p>Lectotype  Amauronematus poppii, here designated</p><p>RUSSIA • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=45.0&amp;materialsCitation.latitude=68.0" title="Search Plazi for locations around (long 45.0/lat 68.0)">Kanin Peninsula</a>; 68.0° N, 45.0° E; B. Poppius leg.; SDEI, GBIF-GISHym4099.</p><p>Lectotype  Amauronematus humeralis var. rufomacula, here designated</p><p>RUSSIA – Kamchatka oblast • ♀; Nischne-Kamtchatsk, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=161.893&amp;materialsCitation.latitude=56.166" title="Search Plazi for locations around (long 161.893/lat 56.166)">Lake Azhabachye</a>; 56.166° N, 161.893° E; R. Malaise leg.; NHRS, NHRS-HEVA000006423  .</p><p>Notes</p><p>20–21 serrulae; lancet not distinguishable from DEI-GISHym19923 or DEI-GISHym84010. Malar space about 1.5 times as long as diameter of front ocellus.</p><p>Lectotype  Amauronematus variabilis var. sjoeblomi, here designated</p><p>RUSSIA – Kamchatka oblast • ♀; Nischne-Kamtchatsk, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=161.893&amp;materialsCitation.latitude=56.166" title="Search Plazi for locations around (long 161.893/lat 56.166)">Lake Azhabachye</a>; 56.166° N, 161.893° E; R. Malaise leg.; NHRS, NHRS-HEVA000006381  .</p><p>Notes</p><p>22 serrulae; lancet most similar to DEI-GISHym19923; malar space (1.6) somewhat shorter from DEIGISHym84010 (1.9–2.1).</p><p>Holotype  Amauronematus tridentatus</p><p>RUSSIA – Kamchatka oblast • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=160.85&amp;materialsCitation.latitude=56.32" title="Search Plazi for locations around (long 160.85/lat 56.32)">Klutchi</a> [Klyuchi]; 56.32° N, 160.85° E; R. Malaise leg.; NHRS, NHRS-HEVA000006422.</p><p>Notes</p><p>Morphologically similar to DEI-GISHym84010.</p><p>Holotype  Amauronematus carbonarius</p><p>SWEDEN – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=16.92&amp;materialsCitation.latitude=67.28" title="Search Plazi for locations around (long 16.92/lat 67.28)">Lule Lappmark</a> • ♀; Hildomvare; 67.28° N, 16.92° E; 900–1000 m a.s.l.; 9 Jul. 1944; P. Brinck and K. Wingstrand leg.; MZLU, MZLU-HYM00031488.</p><p>Notes</p><p>Best morphological match: DEI-GISHym19905 and DEI-GISHym12101. The synonymy with  groenlandicus Malaise by Benson (1962) is here not supported.</p><p>Holotype  Amauronematus enslini</p><p>GERMANY – Bayern • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=10.3&amp;materialsCitation.latitude=47.42" title="Search Plazi for locations around (long 10.3/lat 47.42)">Oberstdorf</a>; 47.42° N, 10.30° E; 22 Jun. 1940; E. Enslin leg.; MZH, http://id.luomus.fi/GL.5119.</p><p>Notes</p><p>Best morphological match: DEI-GISHym19904.</p><p>Holotype  Amauronematus obesus</p><p>FINLAND – Uusimaa • ♀; Helsinki, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=24.89&amp;materialsCitation.latitude=60.22" title="Search Plazi for locations around (long 24.89/lat 60.22)">Munksnäs</a> [Munkkiniemi]; 60.22° N, 24.89° E; 9 May 1937; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.2758.</p><p>Notes</p><p>Malar space about 1.6 times as long as diameter of front ocellus; serrulae most similar to DEIGISHym19904, but setae longer.</p><p>Host plants</p><p>Salix glauca,  S. lanata,  S. lapponum,  S. myrsinites .</p><p>Genetics</p><p>COI</p><p>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-GISHym31073) from California (USA) is included, maximum within-species distance is 6.23%.</p><p>Nuclear</p><p>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-GISHym19806 with only 1529 bp of NaK and POL2 available,  E. toeniata is a minimum of 0.15% different. Inclusion of a specimen (DEI-GISHym31073) from California (USA) does not change the distance values. Although DEI-GISHym31073 is closest to  E. toeniata DEI-GISHym83784 (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 .</p><p>Distribution and material examined</p><p>Holarctic. Specimens studied are from Finland, Norway, Russia, Sweden, Switzerland, and the USA.</p></div>	https://treatment.plazi.org/id/03BCA619FF69D8A19736FDE7FAD4FB70	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF6BD8A69754FAF8FE67F945.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura toeniata (Serville 1823) PR.	<div><p>252  Euura toeniata (Serville, 1823)</p><p>Figs 271, 479, 480</p><p>Nematus toeniatus Serville, 1823: 67–68 . Syntypes ♀♀, probably lost (Lacourt 2000). Type locality: France, Paris area.</p><p>Tenthredo humeralis Zetterstedt, 1838: 351 . Lectotype designated below. Synonymy by Lindqvist (1941b). Secondary homonym of  Nematus humeralis Serville, 1823 [ Euura humeralis (Serville, 1823)].</p><p>Amauronematus aemulus Konow, 1895: 183 . Lectotype designated below. Synonymy by Konow (1905b).</p><p>Amauronematus alpicola Konow, 1895: 183–184 . Lectotype designated below. Synonymy by Lindqvist (1959c) is here re-instated.</p><p>Amauronematus zetterstedti Malaise, 1921a: 127 . Replacement name for  Tenthredo humeralis Zetterstedt, 1838 .</p><p>Diagnosis</p><p>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).</p><p>Type material examined</p><p>Lectotype  Tenthredo humeralis, here designated</p><p>SWEDEN • ♀; locality on label illegible; MZLU, MZLU2017263.</p><p>Notes</p><p>Type locality in the original description: Sweden; Pello, Kengis, Janosuando, Jukkasjärvi.</p><p>Paralectotype  Tenthredo humeralis</p><p>UNKNOW COUNTRY •  ♀; MZLU, MZLU2017262 .</p><p>Lectotype  Amauronematus aemulus, here designated</p><p>GERMANY – Bayern • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=10.49&amp;materialsCitation.latitude=49.23" title="Search Plazi for locations around (long 10.49/lat 49.23)">Herrieden</a>; 49.23° N, 10.49° E; 23 Apr. 1890; Schultheiss leg.; SDEI, GBIFGISHym4101.</p><p>Notes</p><p>Penis valve most similar to ZMUO.033962.</p><p>Lectotype  Amauronematus alpicola, here designated</p><p>SWITZERLAND – Uri • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=8.61&amp;materialsCitation.latitude=46.64" title="Search Plazi for locations around (long 8.61/lat 46.64)">Andermatt</a>; 46.64° N, 8.61° E; SDEI, GBIF-GISHym4087.</p><p>Host plants</p><p>A wide variety of  Salix spp. (Lacourt 1999; Macek et al. 2020), including  S. caprea,  S. myrsinifolia,  S. myrtilloides L. and  S. repens rosmarinifolia .</p><p>Genetics</p><p>COI</p><p>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-GISHym31073) from California, USA (with distance of 2.74–2.89%).</p><p>Nuclear</p><p>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-GISHym19806 with only 1529 bp of NaK and POL2 available,  E. obscuripes is minimum of 0.15% different.</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Austria, Bulgaria, Estonia, Finland, Germany, Norway, Russia, Sweden, and Switzerland.</p></div>	https://treatment.plazi.org/id/03BCA619FF6BD8A69754FAF8FE67F945	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF6CD8A6976FF914FEBDF81D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura tunicata (Zaddach 1883)	<div><p>253  Euura tunicata group</p><p>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.</p></div>	https://treatment.plazi.org/id/03BCA619FF6CD8A6976FF914FEBDF81D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF6DD8A79727FEEEFC03F994.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura lethe Prous & Liston 2014	<div><p>254  Euura lethe Prous &amp; Liston, 2014</p><p>Figs 277, 504</p><p>Amauronematus atratus Lindqvist, 1961b: 6–8 . Secondary homonym of  Pontania atrata MacGillivray, 1919 [ Euura atrata (MacGillivray, 1919)].</p><p>Euura lethe Prous &amp; Liston, 2014 in Prous et al. 2014: 52. Replacement name for  Amauronematus atratus Lindqvist, 1961 . Åttböle.</p><p>Diagnosis</p><p>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-GISHym80762) 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.</p><p>Type material examined</p><p>Holotype  Amauronematus atratus</p><p>FINLAND – Ahvenanmaa • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=19.908&amp;materialsCitation.latitude=60.243" title="Search Plazi for locations around (long 19.908/lat 60.243)">Åttböle</a>; 60.243° N, 19.908° E; 20 May 1945; A. Nordman leg.; MZH, http://id.luomus.fi/GL.3411.</p><p>Host plants</p><p>Salix fragilis,  S. pentandra .</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, and Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FF6DD8A79727FEEEFC03F994	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF6DD8A4972EF9A4FC5EFB43.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura tunicata (Zaddach 1883)	<div><p>255  Euura tunicata (Zaddach, 1883)</p><p>Fig. 279</p><p>Nematus tunicatus Zaddach, 1883 in Brischke 1883: 155–156, 166–167. Syntypes ♀♀ (ZSM? Ex Sturm Collection, not located); other specimens probably destroyed (Blank &amp; Taeger 1998). Type localities: Germany, Nürnberg and Bautzen; Poland, Silesia; Russia, Kaliningrad [Königsberg].</p><p>Nematus laevis Brischke, 1883: 155–156, 174–175. Syntypes ♀♀, probably destroyed (Blank &amp; Taeger 1998). Type locality: Poland, Jäschkenthal. Synonymy by Konow (1902c).</p><p>Amauronematus sollemnis Konow, 1895: 180–181 . Lectotype ♀ (HNHM), designated by Muche (1975), not examined. Type locality: Hungary. Synonymy by Hellén (1970).</p><p>Amauronematus forsiusi Enslin, 1915: 384–385 . Lectotype designated below. Synonymy by Hellén (1970).</p><p>Diagnosis</p><p>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 (1961b: 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-GISHym84228 ( E. striata), externally like  E. rufa .</p><p>Type material examined</p><p>Lectotype  Amauronematus forsiusi, here designated</p><p>FINLAND – Uusimaa • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=23.723&amp;materialsCitation.latitude=60.243" title="Search Plazi for locations around (long 23.723/lat 60.243)">Karislojo</a> [Karjalohja]; 60.243° N, 23.723° E; 25–28 Jun. 1910; R. Forsius leg.; ZSM, GBIF-GISHym3678.</p><p>Host plants</p><p>Salix aurita (Forsius 1920),  S. caprea,  S. myrsinifolia and  S. starkeana .</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Iran, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF6DD8A4972EF9A4FC5EFB43	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF6ED8A4976EFB16FEE6F995.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura variator (Ruthe 1859)	<div><p>256  Euura variator group</p><p>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.</p></div>	https://treatment.plazi.org/id/03BCA619FF6ED8A4976EFB16FEE6F995	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF6ED8A5975BF9A4FE05FAF3.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura fasciata (Konow 1897)	<div><p>257  Euura fasciata (Konow, 1897)</p><p>Figs 264, 474</p><p>Amauronematus fasciatus Konow, 1897: 177–178 . Lectotype designated by Muche (1975).</p><p>Amauronematus perkinsi Benson, 1933: 256–257 . Synonymy by Benson (1958a).</p><p>Diagnosis</p><p>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:</p><p>– 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</p><p>– 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</p><p>Type material examined</p><p>Lectotype  Amauronematus fasciatus</p><p>GERMANY – Mecklenburg-Vorpommern • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=13.36&amp;materialsCitation.latitude=53.45" title="Search Plazi for locations around (long 13.36/lat 53.45)">Teschendorf in Mecklenburg</a>; 53.45° N, 13.36° E; 6 May 1896; F.W. Konow leg.; SDEI, GBIF-GISHym4092.</p><p>Holotype  Amauronematus perkinsi</p><p>UNITED KINGDOM – England • ♀; Buckinghamshire, Halton, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-0.69&amp;materialsCitation.latitude=51.77" title="Search Plazi for locations around (long -0.69/lat 51.77)">Dancer’s End</a>; 51.770° N, 0.690° W; 29 May 1930; R.B. Benson leg.; BMNH, B.M.TYPEHYM.1.641.</p><p>Host plants</p><p>Only reliably recorded from  Salix caprea (e.g., Benander 1966; Vikberg &amp; Kontuniemi 1971).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Bulgaria, Finland, France, Germany, Russia, Sweden, and the United Kingdom.</p></div>	https://treatment.plazi.org/id/03BCA619FF6ED8A5975BF9A4FE05FAF3	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF6FD8AA9720FA47FAC6FD06.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura semilactea (Zaddach 1883) PR.	<div><p>258  Euura semilactea (Zaddach, 1883)</p><p>Figs 265, 475</p><p>Nematus semilacteus Zaddach, 1883 in Brischke 1883: 185. Holotype ♀, probably destroyed (Blank &amp; Taeger 1998). Type locality: Poland, Gdansk [Danzig].</p><p>Diagnosis</p><p>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).</p><p>Host plants</p><p>Salix caprea (Vikberg &amp; Kontuniemi 1971), but also  S. aurita,  S. repens,  S. cinerea (Enslin 1916b), and  S. myrsinifolia (this study).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Bulgaria, Finland, Germany, Norway, Russia, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF6FD8AA9720FA47FAC6FD06	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF60D8AB9741FD51FAEEFB66.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura variator (Ruthe 1859)	<div><p>259  Euura variator (Ruthe, 1859)</p><p>Figs 266–267, 476–477</p><p>Nematus variator Ruthe, 1859: 308–310 . Lectotype designated below.</p><p>Amauronematus godmani Benson, 1955: 104–105 . Syn. nov.</p><p>Amauronematus galbiventris Lindqvist, 1960a: 130 . Syn. nov.</p><p>Amauronematus longidens Lindqvist, 1962b: 13 . Synonymy by Hellén (1970).</p><p>Diagnosis</p><p>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.</p><p>Female</p><p>5.0– 7.5 mm. Tegula pale or sometimes mostly black, metafemur usually completely or mostly pale, sometimes mostly black, abdomen ventrally extensively pale.</p><p>Male</p><p>4.0–6.0(6.5) mm. Tegula and metafemur black or partly pale, subgenital plate pale or sometimes black.</p><p>Best matches to  godmani: ZMUO.044556 (female), ZMUO.059873, ZMUO.058922 (males).</p><p>Type material examined</p><p>Lectotype  Nematus variator, here designated</p><p>ICELAND • ♀; Staudinger leg.; ZMHB, http://coll.mfn-berlin.de/u/dbcac6 / GBIF-GISHym2822.</p><p>Paralectotype  Nematus variator</p><p>ICELAND • 1 ♀; same data as for preceding; SDEI, GBIF-GISHym4103 .</p><p>Notes</p><p>GBIF-GISHym2822 is 6.5 mm long; GBIF-GISHym4103 is 7.7 mm long.</p><p>Holotype  Amauronematus godmani</p><p>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.</p><p>Notes</p><p>ZMUO.044556 is nearly a perfect morphological match.</p><p>Holotype  Amauronematus galbiventris</p><p>SWEDEN – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=18.83&amp;materialsCitation.latitude=68.35" title="Search Plazi for locations around (long 18.83/lat 68.35)">Torne Lappmark</a> • ♀; Abisko; 68.35° N, 18.83° E; 17–22 Jun. 1954; J.E. and R.B. Benson leg.; BMNH, B.M.TYPEHYM.1.785.</p><p>Notes</p><p>Length 6.5 mm.</p><p>Holotype  Amauronematus longidens</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=27.03&amp;materialsCitation.latitude=69.91" title="Search Plazi for locations around (long 27.03/lat 69.91)">Inari Lapland</a> • 1 ♀; Utsjoki; 69.91° N, 27.03° E; 16 Jun. 1960; O. Ranin leg.; MZH, http://id.luomus.fi/GL.3412.</p><p>Notes</p><p>Length 5.5 mm.</p><p>Host plants</p><p>Salix glauca,  S. helvetica Vill.,  S. lapponum,  S. reticulata .</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Austria, Finland, Iceland, Norway, Sweden, and Switzerland.</p></div>	https://treatment.plazi.org/id/03BCA619FF60D8AB9741FD51FAEEFB66	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF61D8A8979BFAF0FB98FEE3.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura vittata (Serville 1823)	<div><p>260  Euura vittata group</p><p>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 &amp; Mutanen sp. nov. (both in the  E. vittata subgroup).  Euura vittata (some specimens from the Pyrenees, e.g., DEI-GISHym11811) 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.</p></div>	https://treatment.plazi.org/id/03BCA619FF61D8A8979BFAF0FB98FEE3	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF62D8A89723FE76FC03F823.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura hedstroemi (Malaise 1931) ZMUO.	<div><p>261  Euura hedstroemi (Malaise, 1931)</p><p>Figs 280, 483</p><p>Amauronematus variabilis var. hedstroemi Malaise, 1931b: 43 . Lectotype designated below.</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Lectotype  Amauronematus variabilis var. hedstroemi, here designated</p><p>RUSSIA – Kamchatka oblast • ♀; Nischne-Kamtchatsk, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=161.893&amp;materialsCitation.latitude=56.166" title="Search Plazi for locations around (long 161.893/lat 56.166)">Lake Azhabachye</a>; 56.166° N, 161.893° E; R. Malaise leg.; NHRS, NHRS-HEVA000006400  .</p><p>Host plants</p><p>Salix phylicifolia .</p><p>Genetics</p><p>COI</p><p>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:ABU6129.</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, and Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FF62D8A89723FE76FC03F823	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF63D8AE9758FEEEFC03FD06.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura hulteni (Malaise 1931) ZMUO.	<div><p>262  Euura hulteni (Malaise, 1931)</p><p>Figs 281, 484</p><p>Amauronematus variabilis var. hulteni Malaise, 1931b: 43 . Mandatory correction of original spelling  hulténi . Lectotype designated below.</p><p>Amauronematus nylundi Lindqvist, 1969: 232–233 . Syn. nov.</p><p>Diagnosis</p><p>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-GISHym84439) 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 .</p><p>Type material examined</p><p>Lectotype  Amauronematus variabilis var. hulteni, here designated</p><p>RUSSIA – Kamchatka oblast • ♀; Nischne-Kamtchatsk, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=161.893&amp;materialsCitation.latitude=56.166" title="Search Plazi for locations around (long 161.893/lat 56.166)">Lake Azhabachye</a>; 56.166° N, 161.893° E; R. Malaise leg.; NHRS, NHRS-HEVA000006409  .</p><p>Notes</p><p>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.</p><p>Holotype  Amauronematus nylundi</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=23.63&amp;materialsCitation.latitude=60.82" title="Search Plazi for locations around (long 23.63/lat 60.82)">Häme</a> • ♀; Forssa; 60.82° N, 23.63° E; 31 May 1966; E. Nylund leg.; MZH, http://id.luomus. fi/GL.2747.</p><p>Notes</p><p>Best morphological match: DEI-GISHym84197.</p><p>Host plants</p><p>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 .</p><p>Genetics</p><p>COI</p><p>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:ABU6129.</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, and Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FF63D8AE9758FEEEFC03FD06	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF64D8AE970EFD52FB6AF914.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura krausi (Taeger & Blank 1998) ZMUO.	<div><p>263  Euura krausi (Taeger &amp; Blank, 1998)</p><p>Figs 290, 488</p><p>Amauronematus krausi Taeger &amp; Blank, 1998: 251–252 .</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Holotype  Amauronematus krausi</p><p>GERMANY – Hessen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=8.82&amp;materialsCitation.latitude=50.67" title="Search Plazi for locations around (long 8.82/lat 50.67)">Climbach</a>; 50.67° N, 8.82° E; 27 May 1986; H. Weiffenbach leg.; reared ex larva on  Populus tremula; SDEI, GBIF-GISHym4094.</p><p>Host plants</p><p>Populus tremula; also  P. alba L., according to Macek et al. (2020).</p><p>Genetics</p><p>COI</p><p>Based on 12 specimens, maximum within-species distance is 3.23% and the nearest neighbour, diverging by a minimum of 0%, is  Euura tillbergi .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Bulgaria, Finland, Germany, Russia, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF64D8AE970EFD52FB6AF914	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF64D8AC9754F924FBE8FA94.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura tillbergi (Malaise 1921)	<div><p>264  Euura tillbergi (Malaise, 1921)</p><p>Figs 284–289, 489–491</p><p>Amauronematus tillbergi Malaise, 1921b: 125–126 . Lectotype designated below.</p><p>Amauronematus tillbergi var. foveifrons Malaise, 1921b: 126–127 . Lectotype designated below. Synonymy by Lindqvist (1941b).</p><p>Amauronematus latisulcatus Malaise, 1931b: 45–46 . Syn. nov.</p><p>Amauronematus pacificus Malaise, 1931b: 47–48 . Lectotype designated below. Secondary homonym of  Pontania pacifica Marlatt, 1896 [ Euura pacifica (Marlatt, 1896)]. Syn. nov.</p><p>Amauronematus mcluckieae Benson, 1935: 31–32 . Mandatory correction of original orthography mcluckiei. Syn. nov.</p><p>Amauronematus rex Benson, 1948b: 32 . Syn. nov.</p><p>Amauronematus obscurus Lindqvist, 1962b: 11–12 . Secondary homonym of  Nematus obscurus Norton, 1861 [ Euura obscura (Norton, 1861)]. Syn. nov.</p><p>Amauronematus pustulatus Lindqvist, 1962b: 12–13 . Syn. nov.</p><p>Euura tranquilla Vårdal &amp; Prous, 2014 in Prous et al. 2014: 52. Replacement name for  Amauronematus pacificus Malaise, 1931 .</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Lectotype  Amauronematus tillbergi, here designated</p><p>SWEDEN – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=19.74&amp;materialsCitation.latitude=68.22" title="Search Plazi for locations around (long 19.74/lat 68.22)">Torne Lappmark</a> • ♀; Torneträsk; 68.22° N, 19.74° E; 400 m a.s.l.; R. Malaise leg.; NHRS, NHRS-HEVA000003942.</p><p>Lectotype  Amauronematus tillbergi var. foveifrons, here designated</p><p>SWEDEN – Torne Lappmark • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=19.74&amp;materialsCitation.latitude=68.22" title="Search Plazi for locations around (long 19.74/lat 68.22)">Torneträsk</a>; 68.22° N, 19.74° E; 400 m a.s.l.; R. Malaise leg.; NHRS, NHRS-HEVA000003943  .</p><p>Notes</p><p>Best matches: DEI-GISHym84434 (colouration), DEI-GISHym84433 (size), DEI-GISHym83702 (lancet).</p><p>Holotype  Amauronematus latisulcatus</p><p>RUSSIA – Kamchatka oblast • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=160.85&amp;materialsCitation.latitude=56.32" title="Search Plazi for locations around (long 160.85/lat 56.32)">Klutchi</a> [Klyuchi]; 56.32° N, 160.85° E; R. Malaise leg.; NHRS, NHRS-HEVA000006415.</p><p>Lectotype  Amauronematus pacificus, here designated</p><p>RUSSIA – Kamchatka oblast • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=158.65&amp;materialsCitation.latitude=55.06" title="Search Plazi for locations around (long 158.65/lat 55.06)">Petropavlovsk</a>; 55.06° N, 158.65° E; R. Malaise leg.; NHRS, NHRS-HEVA000006416.</p><p>Holotype  Amauronematus mcluckieae</p><p>UNITED KINGDOM – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-3.69&amp;materialsCitation.latitude=57.09" title="Search Plazi for locations around (long -3.69/lat 57.09)">Scotland</a> • 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.</p><p>Holotype  Amauronematus rex</p><p>UNITED KINGDOM – England • ♀; Buckinghamshire, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-0.82&amp;materialsCitation.latitude=51.83" title="Search Plazi for locations around (long -0.82/lat 51.83)">Whaddon Chase</a>; 51.83° N, 0.82° W; Mar. 1946; R.B. Benson leg.; reared ex larva on  Salix; BMNH, B.M.TYPEHYM.1.685.</p><p>Notes</p><p>Best morphological match: DEI-GISHym83872. 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-GISHym83872, 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 .</p><p>Holotype  Amauronematus obscurus</p><p>FINLAND – Uusimaa • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=24.9&amp;materialsCitation.latitude=60.3" title="Search Plazi for locations around (long 24.9/lat 60.3)">Helsinge</a> [Vantaa]; 60.30° N, 24.90° E; 25 May 1961; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.2750.</p><p>Holotype  Amauronematus pustulatus</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=28.98&amp;materialsCitation.latitude=66.24" title="Search Plazi for locations around (long 28.98/lat 66.24)">Kuusamo</a> • ♀; Kitka; 66.24° N, 28.98° E; 5 Jul. 1958; M. Viitasaari leg.; MZH, http://id.luomus.fi/GL.2536.</p><p>Host plants</p><p>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 .</p><p>Genetics</p><p>COI</p><p>Based on 35 specimens, maximum within-species distance is 3.28% and the nearest neighbour, diverging by a minimum of 0%, is  Euura krausi .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Norway, Russia, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF64D8AC9754F924FBE8FA94	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF66D8D39741FAA3FD67FEFD.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura vittata (Serville 1823)	<div><p>265  Euura vittata (Serville, 1823)</p><p>Figs 282, 485–486</p><p>Nematus vittatus Serville, 1823: 66 . Syntypes ♀♀ (no type specimens located: Lacourt 2000). Type locality: not stated by Serville, but Lepeletier (1823) wrote “In agro Parisiensi. Mus. dom. Serville”.</p><p>Nematus melanoleucus Hartig, 1840: 27 . Lectotype designated below. Synonymy by Konow (1895).</p><p>Nematus scabrivalvis Thomson, 1871: 132–133 . Lectotype designated below. Synonymy by Konow (1890).</p><p>Amauronematus lateralis Konow, 1895: 181–182 . Holotype ♀ (HNHM), not examined. Type locality: Croatia. Secondary homonym of  Nematus lateralis Norton, 1867 [ Euura lateralis (Norton, 1867) . Syn. nov.</p><p>Amauronematus konowi Enslin, 1915: 397–398 . Syntypes ♀♀, not located. Type locality: Central Europe. Synonymy by Lindqvist (1943).</p><p>Amauronematus vittatus var. sternalis Enslin, 1915: 379 . Syntypes ♀♀, not located. Type locality: not stated. Synonymy by Lindqvist (1962a).</p><p>Amauronematus trautmanni Enslin, 1919a: 395–397 . Lectotype designated below. Syn. nov.</p><p>Amauronematus cameroni Perkins, 1929b: 33 . Published as a new name for  Nematus imperfectus sensu Cameron nec Zaddach. Types not examined. Type locality: United Kingdom, Scotland, near Glasgow and Kingussie [from Cameron 1885: 106]. Syn. nov.</p><p>Amauronematus variabilis var. bergmani Malaise, 1931b: 43–44 . Lectotype designated below. Syn. nov.</p><p>Amauronematus piliserra Lindqvist, 1943: 101–103 . Holotype (“Type”) not found. Type localities: Finland; Sund, Runsala, Pargas, Karislojo, Esbo, Munksnäs, H:gin Ymp.,Tuusula, Loppi, Merikarvia, Hattula, Pirkkala, Suojärvi, Lieksa, Nurmes, Suomussalmi and Russia, Solovetsk.  Syn. nov.</p><p>Amauronematus crispus Benson, 1948b: 30–31 . Synonymy by Lindqvist (1962a).</p><p>Amauronematus pseudofasciatus Lindqvist, 1969: 235 . Syn. nov.</p><p>Pteronidea kamtchatica Lindqvist, 1971a: 127 . Unnecessary replacement name for  Amauronematus variabilis var. bergmani Malaise, 1931 .</p><p>Diagnosis</p><p>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-GISHym11811) 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).</p><p>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, W17671; 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, W17671), 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-GISHym31870 and DEI-GISHym31850 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.</p><p>Type material examined</p><p>Lectotype  Nematus melanoleucus, here designated</p><p>GERMANY • ♀;  northern Germany [according to Hartig 1840: 22]; NFVG, GBIF-GISHym4685.</p><p>Notes</p><p>Best morphological match: DEI-GISHym19414.</p><p>Lectotype  Nematus scabrivalvis, here designated</p><p>SWEDEN – Skåne • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=13.51&amp;materialsCitation.latitude=55.88" title="Search Plazi for locations around (long 13.51/lat 55.88)">Ringsjön</a>; 55.88° N, 13.51° E; MZLU, MZLU2017296.</p><p>Lectotype  Amauronematus trautmanni, here designated</p><p>GERMANY – Bayern • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=10.3&amp;materialsCitation.latitude=47.42" title="Search Plazi for locations around (long 10.3/lat 47.42)">Oberstdorf</a>; 47.42° N, 10.30° E; 24 May 1919; E. Enslin leg.; ZSM, GBIFGISHym3052.</p><p>Notes</p><p>Best morphological match: DEI-GISHym84171.</p><p>Lectotype  Amauronematus variabilis var. bergmani, here designated</p><p>RUSSIA – Kamchatka oblast • ♀; Nischne-Kamtchatsk, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=161.893&amp;materialsCitation.latitude=56.166" title="Search Plazi for locations around (long 161.893/lat 56.166)">Lake Azhabachye</a>; 56.166° N, 161.893° E; R. Malaise leg.; NHRS, NHRS-HEVA000006408  .</p><p>Paralectotype  Amauronematus variabilis var. bergmani</p><p>RUSSIA • 1 ♀; same data as for lectotype; NHRS, NHRS-HEVA000006407 .</p><p>Notes</p><p>Nearly perfect morphological match: ZMUO.031989.</p><p>Holotype  Amauronematus crispus</p><p>UNITED KINGDOM – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-0.191&amp;materialsCitation.latitude=52.443" title="Search Plazi for locations around (long -0.191/lat 52.443)">England</a> • ♀; Huntingdonshire, Woodwalton Fen; 52.443° N, 0.191° W; 10–11 Jun. 1947; R.B. Benson leg.; BMNH, B.M.TYPEHYM.1.687.</p><p>Holotype  Amauronematus pseudofasciatus</p><p>FINLAND – Uusimaa • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=24.9&amp;materialsCitation.latitude=60.3" title="Search Plazi for locations around (long 24.9/lat 60.3)">Helsinge</a> [Vantaa]; 60.30° N, 24.90° E; 15 May 1963; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.2755.</p><p>Notes</p><p>Lancet most similar to DEI-GISHym84438 ( E. tillbergi). COI sequence (458 bp) of the holotype is closest to  E. vittata (two fragments closest to e.g., DEI-GISHym84428, middle fragment to e.g., ZMUO.046537 [ E. tillbergi]).</p><p>Host plants</p><p>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.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Austria, Bulgaria, Estonia, Finland, France, Germany, Norway, Sweden, Switzerland, and the United Kingdom.</p></div>	https://treatment.plazi.org/id/03BCA619FF66D8D39741FAA3FD67FEFD	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF19D8D694E6FE7CFC10FCBB.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura minivittata Prous & Liston & Monckton & Kramp & Vårdal & Vikberg & Heibo & Mutanen 2025	<div><p>266  Euura minivittata Prous &amp; Mutanen sp. nov.</p><p>urn:lsid:zoobank.org:act: 3E5BFFF5-0BEB-4DA4-A032-AB2E53439C66</p><p>Figs 86–87, 283, 487</p><p>Diagnosis</p><p>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 .</p><p>Etymology</p><p>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.</p><p>Type material</p><p>Holotype</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=26.1842&amp;materialsCitation.latitude=69.7679" title="Search Plazi for locations around (long 26.1842/lat 69.7679)">Inari Lapland</a> • 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.</p><p>Paratypes</p><p>FINLAND – Inari Lapland • 1 ♂; same data as for holotype; ZMUO, ZMUO.038882 . –   Kuusamo • 1 ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=29.2577&amp;materialsCitation.latitude=66.2479" title="Search Plazi for locations around (long 29.2577/lat 66.2479)">Kuusamo</a>; 66.2479° N, 29.2577° E; 17 Jun. 2017; M. Mutanen leg.; ZMUO, ZMUO.031642.   – Northern Ostrobothnia • 1 ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=25.585&amp;materialsCitation.latitude=65.1008" title="Search Plazi for locations around (long 25.585/lat 65.1008)">Oulu</a>; 65.1008° N, 25.585° E; 10 May 2018; M. Mutanen leg.; ZMUO, ZMUO.035848  .</p><p>SWEDEN – Norrbotten • 1 ♀; Pajala, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=23.003&amp;materialsCitation.latitude=67.259" title="Search Plazi for locations around (long 23.003/lat 67.259)">Peräjävaara</a>; 67.259° N, 23.003° E; 160 m a.s.l.; 10 Jun. 2017; E. Heibo leg.; CEH, W17609  .</p><p>Description</p><p>Female</p><p>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.</p><p>Male</p><p>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.</p><p>Host plants</p><p>Salix sp., most likely  S. phylicifolia,  S. hastata, or both.</p><p>Genetics</p><p>COI</p><p>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:ACJ5443. 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.</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF19D8D694E6FE7CFC10FCBB	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF1CD8D79757FC7FFBECFDCD.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura brunnea (Norton 1864) ZMUO.	<div><p>267  Euura brunnea (Norton, 1864)</p><p>Figs 291, 505</p><p>Nematus brunneus 
Norton, 1864: 8 . Holotype ♀ (ANSP Type no. 10323, ANSP), not examined. Type locality: USA, Colorado.</p><p>Amauronematus knabi Rohwer, 1912: 244–245 . Syntypes 2 ♀♀ (USNMENT00779111, USNM, http://n 2t.net/ark:/65665/3c1f0cc3e-72e3-43af-86be-b664539d43ae), not examined. Type locality: Canada, Saskatchewan, Oxbow.</p><p>Amauronematus helleni Lindqvist, 1941a: 65–67 . Syn. nov.</p><p>Diagnosis</p><p>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 (4m) from the USA has the same lancet as the European specimens and based on two nuclear genes (NaK and EF1a F2) 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.</p><p>Type material examined</p><p>Holotype  Amauronematus helleni</p><p>RUSSIA – Karelia • 1 ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=32.368&amp;materialsCitation.latitude=62.09" title="Search Plazi for locations around (long 32.368/lat 62.09)">Suojärvi</a> [Suojarwi]; 62.090° N, 32.368° E; 23 May 1937; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.2528.</p><p>Host plants</p><p>Betula nana .</p><p>Genetics</p><p>COI</p><p>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-GISHym31072 from California, USA.</p><p>Nuclear</p><p>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 EF1a F2 and 7 specimens (including a specimen 4m 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 .</p><p>Distribution and material examined</p><p>Holarctic. Specimens studied are from Finland, Norway, Sweden, and the USA.</p></div>	https://treatment.plazi.org/id/03BCA619FF1CD8D79757FC7FFBECFDCD	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF1DD8D7979BFD8BFE2BFB1C.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura ribesii (Scopoli 1763)	<div><p>268  Euura ribesii group</p><p>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.</p></div>	https://treatment.plazi.org/id/03BCA619FF1DD8D7979BFD8BFE2BFB1C	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF1DD8D49706FB5BFB9AFE5D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura gracilidentata (Viitasaari 1980)	<div><p>269  Euura gracilidentata (Viitasaari, 1980)</p><p>Figs 214, 506</p><p>Pteronidea gracilidentata Viitasaari, 1980: 34–36 .</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Holotype  Pteronidea gracilidentata</p><p>FINLAND – Uusimaa • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=24.9&amp;materialsCitation.latitude=60.3" title="Search Plazi for locations around (long 24.9/lat 60.3)">Helsinge</a> [Vantaa]; 60.30° N, 24.90° E; 1 Jun. 1964; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.2454.</p><p>Host plants</p><p>Ribes alpinum .</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Germany, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF1DD8D49706FB5BFB9AFE5D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF1ED8D59727FE1CFAF9F9B0.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura leucotrocha (Hartig 1837) ZMUO.	<div><p>270  Euura leucotrocha (Hartig, 1837)</p><p>Figs 215, 507</p><p>Nematus leucotrochus Hartig, 1837: 193–194 . Lectotype designated below.</p><p>Nematus maculiventris Hartig, 1840: 25 . Type locality: northern Germany. No specimens located. Synonymy by Konow (1903b).</p><p>Nematus haemorrhoidalis Hartig, 1840: 26 . Lectotype designated by Haris (1997). Primary homonym of  Nematus haemorrhoidalis Spinola, 1808 (=  Nematus haemmorhoidalis Spinola, 1808). Syn. nov.</p><p>Nematus caudalis Eversmann, 1847: 16 . Lectotype designated below. Syn. nov.</p><p>Nematus approximatus Förster, 1854a: 320–321 . Lectotype designated by Viitasaari (1980). Synonymy by Konow (1903b).</p><p>Nematus consobrinus Snellen van Vollenhoven, 1871: 237–242, pl, 10. Syntypes ♀ ♂, not located by Thomas (1987). Type locality: Netherlands, Haarlem. Synonymy by Konow (1899).</p><p>Nematus umbrinus Zaddach, 1876: 84–85 . Syntypes ♀ ♂, probably destroyed (Blank &amp; Taeger 1998). Type localities: Poland, Silesia and Gdansk [Danzig]; Russia, Kaliningrad [Königsberg]. Synonymy by Konow (1903b).</p><p>Nematus incertus W.F. Kirby, 1882: 107 . Replacement name for  Nematus haemorrhoidalis Hartig, 1840 .</p><p>Nematus sauterianus Zaddach, 1883 in Brischke 1883 147, 153. Holotype ♀, probably destroyed (Blank &amp; Taeger 1998). Type locality: East Prussia. Synonymy by Konow (1903b).</p><p>Nematus multiplex Zaddach, 1883 in Brischke 1883: 188. Syntypes ♀♀ (MNHW), not examined. Type locality: Silesia. Synonymy by Konow (1903b).</p><p>Pteronidea cognata Lindqvist, 1958: 108–111 . Synonymy with  approximatus by Lindqvist (1962a).</p><p>Diagnosis</p><p>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 .</p><p>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.</p><p>Type material examined</p><p>Lectotype  Nematus leucotrochus, here designated</p><p>GERMANY – Niedersachsen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=10.3&amp;materialsCitation.latitude=51.8" title="Search Plazi for locations around (long 10.3/lat 51.8)">Harz</a>; 51.8° N, 10.3° E; W. Saxesen leg.; ZSM, GBIF-GISHym3338.</p><p>Paralectotype  Nematus leucotrochus</p><p>GERMANY • 1 ♀; same data as for lectotype; NFVG, GBIF-GISHym4684 .</p><p>Lectotype  Nematus haemorrhoidalis</p><p>GERMANY • ♂;  northern Germany [according to Hartig 1840: 22]; ZSM, DEI-GISHym12490.</p><p>Lectotype  Nematus caudalis, here designated</p><p>RUSSIA – Tatarstan • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=49.1&amp;materialsCitation.latitude=55.8" title="Search Plazi for locations around (long 49.1/lat 55.8)">Kasan Province</a>; 55.8° N, 49.1° E; E. Eversmann leg.; ZIN, DEI-GISHym30028.</p><p>Lectotype  Nematus approximatus</p><p>GERMANY – Nordrhein-Westfalen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.09&amp;materialsCitation.latitude=50.77" title="Search Plazi for locations around (long 6.09/lat 50.77)">Aachen area</a>; 50.77° N, 6.09° E; ZSM, GBIF-GISHym3203.</p><p>Holotype  Pteronidea cognata</p><p>FINLAND – Uusimaa • ♀; Helsinki, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=24.89&amp;materialsCitation.latitude=60.22" title="Search Plazi for locations around (long 24.89/lat 60.22)">Munksnäs</a> [Munkkiniemi]; 60.22° N, 24.89° E; 2 Apr. 1955; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.2455.</p><p>Host plants</p><p>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 1958a; Pschorn-Walcher &amp; 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 .</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Germany, Russia, Sweden, and the United Kingdom.</p></div>	https://treatment.plazi.org/id/03BCA619FF1ED8D59727FE1CFAF9F9B0	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF1FD8DB972DF986FA89FED8.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura quieta (Eversmann 1847) ZMUO.	<div><p>271  Euura quieta (Eversmann, 1847)</p><p>Figs 216, 508</p><p>Nematus quietus Eversmann, 1847: 17 . Lectotype designated below.</p><p>Nematus olfaciens Benson, 1953: 60–63 . Syn. nov.</p><p>Diagnosis</p><p>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-GISHym30033, DEI-GISHym30034), which have black antennae (not ventrally pale).</p><p>A sequenced specimen from Slovakia (DEI-GISHym17629) is clearly different based on COI and nuclear genes (1529 bp of NaK and POL2) from the Finnish specimens (and from the other sequenced  ribesii group specimens). Morphologically, the specimen DEI-GISHym17629 (and DEI-GISHym19035 also from Slovakia) fits better with  quieta than the other species.</p><p>Type material examined</p><p>Lectotype  Nematus quietus, here designated</p><p>RUSSIA – Tatarstan • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=49.1&amp;materialsCitation.latitude=55.8" title="Search Plazi for locations around (long 49.1/lat 55.8)">Kasan Province</a>; 55.8° N, 49.1° E; E. Eversmann leg.; ZIN, DEI-GISHym30034.</p><p>Notes</p><p>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-GISHym21329) to the other specimens of  ribesii group.</p><p>Holotype  Nematus olfaciens</p><p>UNITED KINGDOM – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=2.96&amp;materialsCitation.latitude=56.48" title="Search Plazi for locations around (long 2.96/lat 56.48)">Scotland</a> • ♀; Dundee; 56.48° N, 2.96° E; Aug. 1952; A. Sanderson leg.; reared ex larvae  Ribes nigrum; BMNH, B.M.TYPEHYM.1.696.</p><p>Notes</p><p>Best morphological match: ZMUO.029695 and ZMUO.029449.</p><p>Host plants</p><p>According to Benson (1953) preferably  Ribes nigrum, but also  R. rubrum and  R. uva-crispa .</p><p>Genetics</p><p>COI</p><p>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.</p><p>Nuclear</p><p>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.</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Russia, Slovakia, and the United Kingdom.</p></div>	https://treatment.plazi.org/id/03BCA619FF1FD8DB972DF986FA89FED8	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF11D8D89721FE9FFC03FCE0.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura ribesicola (Lindqvist 1949)	<div><p>272  Euura ribesicola (Lindqvist, 1949)</p><p>Figs 219, 511</p><p>Pteronidea ribesicola Lindqvist, 1949: 72–73 . Lectotype ♀ (http://id.luomus.fi/GL.2460, MZH), designated by Viitasaari (1980).</p><p>Nematus bey-bienkoi Skorikova, 1952: 107–108 . Synonymy by Viitasaari (1980).</p><p>Euura suguri Hara &amp; Iwasaki, 2021: 53–57 . Holotype ♀ (NSMT), not examined. Type locality: Japan, Hokkaido, Eniwa.  Syn. nov.</p><p>Diagnosis</p><p>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.</p><p>Recently, Hara &amp; Iwasaki (2021) described  E. suguri from Japan.When comparing  suguri with  ribesicola, Hara &amp; 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 &amp; Iwasaki (2021) might not be reliable either, as this can vary within species as well as between the larval instars (the photos in Hara &amp; 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 &amp; Iwasaki 2021), or dark specks (Hellqvist &amp; 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.</p><p>Males are not known for certain, but the colouration of DEI-GISHym86112 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.</p><p>Type material examined</p><p>Lectotype  Pteronidea ribesicola</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=22.28&amp;materialsCitation.latitude=60.46" title="Search Plazi for locations around (long 22.28/lat 60.46)">Regio aboensis</a> • ♀; 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.</p><p>Holotype  Nematus bey-bienkoi</p><p>RUSSIA – Perm oblast • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=65.312&amp;materialsCitation.latitude=57.996" title="Search Plazi for locations around (long 65.312/lat 57.996)">Molotov</a> [Perm]; 57.996° N, 65.312° E; 20 May 1943; G. Bey-Bienko leg.; ZIN, DEI-GISHym30236.</p><p>Host plants</p><p>Preferably  Ribes nigrum (Viitasaari 1980), but also  R. uva-crispa and  R. rubrum (Viitasaari 1980; Hara &amp; Iwasaki 2021).</p><p>Genetics</p><p>COI</p><p>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.</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, and Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FF11D8D89721FE9FFC03FCE0	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF12D8DE9740FC77FE3FFE75.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura ribesii (Scopoli 1763)	<div><p>273  Euura ribesii (Scopoli, 1763)</p><p>Figs 217, 509</p><p>Tenthredo ribesii Scopoli, 1763: 280 . Syntypes ♂♂ and larvae (lost or destroyed). Type locality: Slovenia, Carniola [Kranjska].</p><p>Nematus trimaculatus Serville, 1823: 71 . Syntypes ♀♀ (no type material located: Lacourt 2000). Type locality: North of France. Synonymy by Dalla Torre (1894).</p><p>Nematus dimidiatus Serville, 1823: 70–71 . Lectotype ♀ (MNHN), designated by Lacourt (2000), not examined. Type locality: France, Ile-de-France, Paris. Synonymy by Enslin (1916a).</p><p>Nematus ribesii Stephens, 1829: 329 . Syntypes ♀ ♂, larvae (no type material located). Type locality: United Kingdom, England. Synonymy by Dalla Torre (1894). Secondary homonym of  Tenthredo ribesii Scopoli, 1763 [ Euura ribesii (Scopoli, 1763)].</p><p>Tenthredo ventricosa Bouché, 1834: 140 . Syntype larvae (no type material located). Type locality: not stated. Synonymy by Dalla Torre (1894).</p><p>Nematus grossulariae Dahlbom, 1835a: 22–23 . Syntype larvae (adults reared, but not described). No syntypes found in MZLU: a specimen from Dahlbom’s collection cannot be a syntype, because according to the label the female emerged in May 25 in 1835, while according to the original description the reared adults emerged in April. Type locality: Sweden. Synonymy by Dalla Torre (1894).</p><p>Nematus grossulariatus Dahlbom, 1835a: 25 . Type locality: Sweden, Skåne. Holotype not found in MZLU. Synonymy by Dalla Torre (1894).</p><p>Nematus ventricosus Hartig, 1837: 196–197 . Syntypes ♀ ♂ (according to Hartig in ZMHB: not located). Type locality: not stated. Synonymy by Dalla Torre (1894).</p><p>Nematus flavipes Hartig, 1840: 24 . Lectotype designated below. Synonymy by Konow (1905b). Primary homonym of  Nematus flavipes Dahlbom, 1835 [ Pristiphora appendiculata (Hartig, 1837)].</p><p>Nematus xanthophorus Hartig, 1840: 25 . Syntypes, sex not stated, not located. Type locality: northern Germany. Synonymy by Konow (1903b).</p><p>Nematus ribis Leduc, 1842: 46, 48, pls 1–2. Syntypes ♀ ♂, larva, pupa. No type material is known to exist. Type locality: France, Seine-et-Oise. Synonymy by Taeger et al. (2010).</p><p>Tenthredo grossulariae Fischer von Waldheim, 1843: 2 . Syntypes, sex not stated. No type material is known to exist. Type locality: Russia. Synonymy by Dalla Torre (1894). Primary homonym of  Tenthredo (Emphytus) grossulariae Klug, 1818 [ Ametastegia (Protemphytus) pallipes (Spinola, 1808)].</p><p>Pteronus longicornis Marlatt, 1896a: 44–46 (key), 72. Secondary homonym of  Nematus longicornis Eschscholtz, 1822 (incertae sedis).</p><p>Pteronus arapahonum Cockerell, 1906: 220 . Syntypes (3 ♂♂) (USNMENT00778028, USNM, http://n 2t.net/ark:/65665/3c9dcf78c-4891-4bb4-8fe8-b65d3cc54874), not examined. Type locality: USA, Colorado, Boulder.</p><p>Pteronidea aceris Rohwer, 1915: 211 . Holotype ♀ (USNMENT00778631, USNM, http://n 2t.net/ ark:/65665/3df27021b-df45-4a52-b962-faf9ad8c1013), not examined. Type locality: USA, Pennsylvania, Charter Oak. Synonymy by Ross (1951).</p><p>Pteronidea ribesii var. konowi Enslin, 1916a: 420 . Lectotype designated below. Synonymy by Smith (1979). Secondary homonym of  Pteronus konowi Jakowlew, 1891 [=  Euura konowi (Jakowlew, 1891), incertae sedis].</p><p>Pteronidea ribesii var. feminina Enslin, 1916a: 419 . Lectotype designated below. Synonymy by Smith (1979).</p><p>Pteronidea equatia MacGillivray, 1923a: 30 . Holotype ♂ (INHS), not examined. Type locality: USA, Oregon, Corvallis. Synonymy by Ross (1951).</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Lectotype  Nematus flavipes, here designated</p><p>GERMANY • ♂;  northern Germany [according to Hartig 1840: 22]; ZSM, GBIF-GISHym3686.</p><p>Syntype  Pteronus longicornis</p><p>USA – Michigan • ♂; Ingham, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-84.483&amp;materialsCitation.latitude=42.746" title="Search Plazi for locations around (long -84.483/lat 42.746)">Agricultural College</a>; 42.746° N, 84.483° W; USNM, USNMENT00778536, http://n 2t.net/ark:/65665/320572933-77a7-4e85-bbc7-8e6e65c4e5e0  .</p><p>Lectotype  Pteronidea ribesii var. konowi, here designated</p><p>GERMANY – Bayern • ♀; Fränkischer Jura; E. Enslin leg.; ZSM, GBIF-GISHym3322 .</p><p>Lectotype  Pteronidea ribesii var. feminina, here designated</p><p>COUNTRY UNKNOWN •  ♂; [label illegible]; ZSM, GBIF-GISHym3274.</p><p>Host plants</p><p>Ribes spp.: most frequently  R. rubrum and  R. uva-crispa, only rarely on  R. nigrum (Viitasaari 1980) . Larvae gregarious.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Holarctic. Specimens studied are from Austria, Canada (only genetics), Finland, Germany, Norway, and the United Kingdom.</p></div>	https://treatment.plazi.org/id/03BCA619FF12D8DE9740FC77FE3FFE75	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF14D8DE9755FDC4FB8AF843.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura similator (Forster 1854)	<div><p>274  Euura similator (Förster, 1854)</p><p>Figs 218, 510</p><p>Nematus similator Förster, 1854a: 321–322 . Lectotype designated by Viitasaari (1980).</p><p>Nematus eurysternus Zaddach, 1883 in Brischke 1883: 162. Syntypes ♀ ♂ (some may be in the ZSM, but if so, they are not clearly recognisable as types), not examined. Type localities: Germany, Czech Republic, Scotland, and possibly Russia. Synonymy by Viitasaari (1980).</p><p>Pteronidea leucotrocha var. loisellei Enslin, 1916a: 421 . Lectotype designated below. Synonymy by Viitasaari (1980).</p><p>Pteronidea eurysterna var. lutescens Enslin, 1916a: 422–423 . Lectotype designated below. Synonymy by Taeger et al. (2010).</p><p>Pteronus eurysterna var. struvei Zirngiebl, 1939: 109–111 . Syntypes ♀♀. Type deposition unclear (Blank 1996). Type locality: Germany, Borkum. Synonymy by Blank (1996).</p><p>Diagnosis</p><p>Most similar to  E. quieta, see differences discussed under that species.</p><p>Type material examined</p><p>Lectotype  Nematus similator</p><p>GERMANY – Nordrhein-Westfalen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.09&amp;materialsCitation.latitude=50.77" title="Search Plazi for locations around (long 6.09/lat 50.77)">Aachen area</a>; 50.77° N, 6.09° E; ZSM, GBIF-GISHym3425.</p><p>Lectotype  Pteronidea leucotrocha var. loisellei, here designated</p><p>FRANCE – Basse-Normandie • ♀;  Lisieux; 3 Aug. 1909; A. Loiselle leg.; ZSM, GBIF-GISHym3337  .</p><p>Lectotype  Pteronidea eurysterna var. lutescens, here designated</p><p>CROATIA • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=15.871&amp;materialsCitation.latitude=46.161" title="Search Plazi for locations around (long 15.871/lat 46.161)">Krapina</a>; 46.161° N, 15.871° E; Hensch leg.; ZSM, GBIF-GISHym3342  .</p><p>Host plants</p><p>Only  Ribes uva-crispa has been unequivocally recorded (Taeger et al. 1998).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Croatia, France, and Germany.</p></div>	https://treatment.plazi.org/id/03BCA619FF14D8DE9755FDC4FB8AF843	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF15D8DF9764FB55FB6FFAE7.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura scutellata (Hartig 1837)	<div><p>276  Euura scutellata group</p><p>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.</p></div>	https://treatment.plazi.org/id/03BCA619FF15D8DF9764FB55FB6FFAE7	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF15D8DF970BFEEFFD79FB04.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura vastatrix (Zhelochovtsev 1935)	<div><p>275  Euura vastatrix (Zhelochovtsev, 1935)</p><p>Pteronidea vastatrix Zhelochovtsev, 1935: 153 . Syntypes ♀ ♂ (BMNH, NHRS, ZMMU?).</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Syntype  Pteronidea vastatrix</p><p>RUSSIA – Amur oblast • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=127.523&amp;materialsCitation.latitude=50.281" title="Search Plazi for locations around (long 127.523/lat 50.281)">Blagoveshchensk</a>; 50.281° N, 127.523° E; 29 Jul.–1 Aug. 1930; W. Wereschtschagin leg.; NHRS, NHRS-HEVA000006437  .</p><p>Host plants</p><p>Ribes nigrum (Viitasaari 1980) .</p><p>Genetics</p><p>COI</p><p>No data.</p><p>Nuclear No data.</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FF15D8DF970BFEEFFD79FB04	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF15D8DC975FFA73FB8DFD66.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura insignis (Hartig 1840)	<div><p>277  Euura insignis (Hartig, 1840)</p><p>Figs 292, 512</p><p>Nematus insignis Hartig, 1840: 22 . Lectotype designated below.</p><p>Nematus superbus Gradl, 1881: 299–300 . Holotype ♂ (NMPC?), not examined. Type locality: Czech Republic, Egerland. Synonymy by Konow (1898).</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Lectotype  Nematus insignis, here designated</p><p>GERMANY – Niedersachsen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=10.34&amp;materialsCitation.latitude=51.8" title="Search Plazi for locations around (long 10.34/lat 51.8)">Klausthal</a> [Clausthal-Zellerfeld]; 51.80° N, 10.34° E; W. Saxesen leg.; NFVG, GBIF-GISHym4690.</p><p>Host plants</p><p>Picea abies is the main host in Europe, but  P. pungens Engelm. is also used (Kula et al. 2016).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Germany, and Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FF15D8DC975FFA73FB8DFD66	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF16D8DC9755FCF2FE0AF804.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura scutellata (Hartig 1837)	<div><p>278  Euura scutellata (Hartig, 1837)</p><p>Figs 293, 513</p><p>Nematus scutellatus Hartig, 1837: 214–216 . Lectotype designated below.</p><p>Nematus immundus Thomson, 1863: 625 . Lectotype designated below. Synonymy by Konow (1890).</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Lectotype  Nematus scutellatus, here designated</p><p>GERMANY – Niedersachsen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=10.3&amp;materialsCitation.latitude=51.8" title="Search Plazi for locations around (long 10.3/lat 51.8)">Harz</a>; 51.8° N, 10.3° E; W. Saxesen leg.; ZSM, GBIF-GISHym3412.</p><p>Lectotype  Nematus immundus, here designated   SWEDEN • ♀;  Västergötland; MZLU, MZLU2017306.</p><p>Host plants</p><p>The usual host is  Picea abies, but  P. pungens is also accepted (Kula et al. 2016).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>Based on 2 specimens, maximum within-species distance is 0.69%. The nearest neighbour, diverging by a minimum of 1.26%, is  Euura insignis .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Austria, Finland, France, Germany, Russia, Slovakia, Sweden, and Switzerland.</p></div>	https://treatment.plazi.org/id/03BCA619FF16D8DC9755FCF2FE0AF804	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF17D8DD979AFEEEFB39FDDB.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura vicina (Serville 1823)	<div><p>279  Euura vicina group</p><p>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-GISHym80076) from Primorsky Krai (Russia) had apparently fed on  Bistorta sp. At this point it is not possible to say which species DEI-GISHym80076 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 .</p></div>	https://treatment.plazi.org/id/03BCA619FF17D8DD979AFEEEFB39FDDB	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF17D8C2972CFD9EFC09FD3F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura nigerrima (Konow 1903)	<div><p>280  Euura nigerrima (Konow, 1903)</p><p>Figs 294, 514–515</p><p>Pachynematus nigerrimus Konow, 1903a: 381 (key). Lectotype designated by Oehlke &amp; Wudowenz (1984).</p><p>Nematus fumosus Lacourt, 1991: 69–70 . Syn. nov.</p><p>Diagnosis</p><p>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 .</p><p>Pronotum black or posterior margin slightly pale. Costa and pterostigma black or dark brown. Metafemur apically (up to half) pale.</p><p>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).</p><p>Type material examined</p><p>Lectotype  Pachynematus nigerrimus</p><p>AUSTRIA – Tirol • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=11.378&amp;materialsCitation.latitude=47.277" title="Search Plazi for locations around (long 11.378/lat 47.277)">Innsbruck</a>; 47.277° N, 11.378° E; 10 May 1896; Friese leg.; SDEI, GBIFGISHym3883.</p><p>Notes</p><p>Length 6.3 mm.</p><p>Holotype  Nematus fumosus</p><p>FRANCE – Provence-Alpes-Cote-d’Azur • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.45&amp;materialsCitation.latitude=44.89" title="Search Plazi for locations around (long 6.45/lat 44.89)">Ailefroide</a>; 44.89° N, 6.45° E; 1500 m a.s.l.; 30 May 1982; V. Lacourt leg.; CTN, DEI-GISHym12672.</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>No data.</p><p>Nuclear No data.</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Austria and France.</p></div>	https://treatment.plazi.org/id/03BCA619FF17D8C2972CFD9EFC09FD3F	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF08D8C39754FD3BFB5FFD7D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura notabilis (Konow 1903)	<div><p>281  Euura notabilis (Konow, 1903)</p><p>Figs 295, 516–517</p><p>Pteronus notabilis Konow, 1903b: 307 (key). Lectotype designated below.</p><p>Nematus pulcher Vikberg, 1982: 63 . Unnecessary replacement name for  Pteronus notabilis Konow, 1903 .</p><p>Diagnosis</p><p>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).</p><p>Female</p><p>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.</p><p>Type material examined</p><p>Lectotype  Pteronus notabilis, here designated</p><p>POLAND • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=17.03&amp;materialsCitation.latitude=51.11" title="Search Plazi for locations around (long 17.03/lat 51.11)">Breslau</a> [Wroclaw]; 51.11° N, 17.03° E; SDEI, GBIF-GISHym3862.</p><p>Host plants</p><p>Bistorta officinalis .</p><p>Genetics</p><p>COI</p><p>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-GISHym80076) from Primorsky Krai, Russia.</p><p>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-GISHym80076) from Primorsky Krai, Russia.</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Bulgaria, Estonia, Germany, Poland, and Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FF08D8C39754FD3BFB5FFD7D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF09D8C09743FCFCFC17FED8.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura putoni (Konow 1903)	<div><p>282  Euura putoni (Konow, 1903)</p><p>Figs 296, 518</p><p>Pteronus putoni Konow, 1903b: 307 (key). Lectotype designated by Oehlke &amp; Wudowenz (1984).</p><p>Amauronematus erythropus Lindqvist, 1975: 17 . Syn. nov.</p><p>Diagnosis</p><p>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.</p><p>Female</p><p>7.5–8.5 mm.</p><p>Type material examined</p><p>Lectotype  Pteronus putoni</p><p>FRANCE • ♀;  France; SDEI, GBIF-GISHym3868  .</p><p>Holotype  Amauronematus erythropus</p><p>RUSSIA – Irkutskaya oblast • ♀; Irkutsk,  Uladovo; 1966; MZH, http://id.luomus.fi/GL.5126.</p><p>Host plants</p><p>Adults have been found on and near  Bistorta officinalis, which may be the larval host plant.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>Only one sequence available. The nearest neighbours, diverging by a minimum of 0.8%, are  Euura notabilis and  E. vicina group larva DEI-GISHym80076.</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from France, and Germany.</p></div>	https://treatment.plazi.org/id/03BCA619FF09D8C09743FCFCFC17FED8	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF0AD8C09740FE9FFD0BFA6C.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura vicina (Serville 1823)	<div><p>283  Euura vicina (Serville, 1823)</p><p>Figs 297, 519</p><p>Nematus vicinus Serville, 1823: 68 . Holotype ♂ (MNHN), not examined. Type locality: northern France.</p><p>Nematus longispinis Kriechbaumer, 1885: 13 . Syntypes, sex not stated, not located. A name for specimens determined by A. Förster as  N. coeruleocarpus . Type locality: not specified. Synonymy with  Nematus crassus auct. nec Fallén by Dalla Torre (1894).</p><p>Holconeme  flavipes Matsumura, 1912: 218–219 . Syntypes ♀♀, not examined. Type locality: Japan, Hokkaido, Sapporo. Synonymy by Takeuchi (1952).</p><p>Diagnosis</p><p>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 .</p><p>Host plants</p><p>Rumex spp. (Miles 1936; Kangas 1985). Reports from  Betula and  Salix (see, e.g., Miles 1936) require confirmation.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>Based on 2 specimens, maximum within-species distance is 0.7%. The nearest neighbour, diverging by a minimum of 3.19%, is  Euura notabilis .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Bulgaria, Finland, France, Germany, Norway, Russia, Sweden, Switzerland, and the United Kingdom.</p></div>	https://treatment.plazi.org/id/03BCA619FF0AD8C09740FE9FFD0BFA6C	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF0AD8C09792F9EBFDD0F82C.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura viduata (Zetterstedt 1838) PR.	<div><p>284  Euura viduata group</p><p>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.</p></div>	https://treatment.plazi.org/id/03BCA619FF0AD8C09792F9EBFDD0F82C	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF0BD8C1972DFEEEFB5CF85F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura cornuta (Lindqvist 1962)	<div><p>285  Euura cornuta (Lindqvist, 1962)</p><p>Figs 298, 520</p><p>Amauronematus cornutus Lindqvist, 1962a: 118–120 .</p><p>Diagnosis</p><p>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.</p><p>Female</p><p>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.</p><p>Male</p><p>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.</p><p>Type material examined</p><p>Holotype  Amauronematus cornutus</p><p>FINLAND – Uusimaa • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=24.439&amp;materialsCitation.latitude=60.126" title="Search Plazi for locations around (long 24.439/lat 60.126)">Kirkkonummi</a>; 60.126° N, 24.439° E; 3 May 1959; V. Karvonen leg.; MZH, http://id.luomus.fi/GL.2466.</p><p>Host plants</p><p>Salix caprea,  S. glauca .</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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).</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Bulgaria, Finland, Norway, Russia, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF0BD8C1972DFEEEFB5CF85F	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF0CD8C69757FEEEFB8DFA2D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura erecta (Lindqvist 1945)	<div><p>286  Euura erecta (Lindqvist, 1945)</p><p>Figs 300, 526–527</p><p>Amauronematus erectus Lindqvist, 1945: 107–108 . Syntypes ♀ ♂ (MZH?), not located. Type localities: Finland, Lapland; Sweden, Virihaure; Russia, Dudinka.</p><p>Diagnosis</p><p>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 (DEIGISHym12074, 210009_LGB) of  E. erecta the apex of pseudoceps forms a small filament. The other males we have checked (DEI-GISHym12062, DEI-GISHym84015) 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 .</p><p>Host plants</p><p>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).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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).</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Norway, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF0CD8C69757FEEEFB8DFA2D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF0CD8C79725FA2DFB9AFA6A.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura leucolena (Brischke 1883) ZMUO.	<div><p>287  Euura leucolena (Brischke, 1883)</p><p>Figs 302–303, 528–529</p><p>Nematus leucolenus Brischke, 1883: 196–197 . Syntypes ♀ ♂, probably destroyed (Blank &amp; Taeger 1998). Type locality: Poland, Gdansk [Danzig].</p><p>Pontania unga 
Kincaid, 1900: 354 . Holotype ♀ (USNMENT00778215, USNM, http://n 2t.net/ ark:/65665/310804fa0-29f1-4aa8-bc3c-6e083e890c90), not examined. Type locality: USA, Alaska,  Popof Island .</p><p>Pteronidea egeria 
MacGillivray, 1923c: 161–162 . Holotype ♀ (INHS), not examined. Type locality: Canada, Alberta, Edmonton.</p><p>Amauronematus saarineni Lindqvist, 1945: 106 . Lectotype designated below. Syn. nov.</p><p>Diagnosis</p><p>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 .</p><p>Type material examined</p><p>Lectotype  Amauronematus saarineni, here designated</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=23.888&amp;materialsCitation.latitude=61.544" title="Search Plazi for locations around (long 23.888/lat 61.544)">Häme</a> • ♀; Aitolahti; 61.544° N, 23.888° E; 17 May 1936; A. Saarinen leg.; MZH, http://id.luomus.fi/GL.2458.</p><p>Notes</p><p>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-GISHym12009 (except that the tip of the abdomen is paler).</p><p>Host plants</p><p>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 1948b),  S. phylicifolia (Kangas 1985) .</p><p>Genetics</p><p>COI</p><p>Based on 30 specimens, maximum within-species distance is 4.56% and the nearest neighbour, diverging by a minimum of 0%, is  Euura malaisei .</p><p>Nuclear</p><p>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.</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Germany, and Norway.</p></div>	https://treatment.plazi.org/id/03BCA619FF0CD8C79725FA2DFB9AFA6A	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF0DD8C4975BF9EEFC03F9A5.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura malaisei (Hellen 1970)	<div><p>288  Euura malaisei (Hellén, 1970)</p><p>Figs 301, 530</p><p>Decanematus longiserra Malaise, 1931b: 31–32 .Secondary homonym of  Nematus longiserra Thomson, 1863 [=  Euura longiserra (Thomson, 1863)].</p><p>Amauronematus malaisei Hellén, 1970: 7 . Replacement name for  Decanematus longiserra Malaise, 1931.</p><p>Diagnosis</p><p>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 .</p><p>Female</p><p>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.</p><p>Male</p><p>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.</p><p>Type material examined</p><p>Holotype  Decanematus longiserra</p><p>RUSSIA – Kamchatka oblast • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=160.85&amp;materialsCitation.latitude=56.32" title="Search Plazi for locations around (long 160.85/lat 56.32)">Klutchi</a> [Klyuchi]; 56.32° N, 160.85° E; R. Malaise leg.; NHRS, NHRS-HEVA000006442.</p><p>Notes</p><p>Holotype length 6.5 mm, or 6.9 mm including valvula 3.</p><p>Host plants</p><p>Salix glauca,  S. lanata .</p><p>Genetics</p><p>COI</p><p>Based on 6 specimens, maximum within-species distance is 3.75% and the nearest neighbour, diverging by a minimum of 0%, is  Euura leucolena .</p><p>Nuclear</p><p>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).</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, and Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FF0DD8C4975BF9EEFC03F9A5	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF0ED8C5973AF9B4FC03F9A1.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura nitidipleuris (Malaise 1931)	<div><p>289  Euura nitidipleuris (Malaise, 1931)</p><p>Figs 299, 521</p><p>Amauronematus nitidipleuris Malaise, 1931b: 45 . Lectotype designated below.</p><p>Amauronematus temporalis Hellén, 1970: 34 . Syn. nov.</p><p>Diagnosis</p><p>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 .</p><p>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%.</p><p>Type material examined</p><p>Lectotype  Amauronematus nitidipleuris, here designated</p><p>RUSSIA – Kamchatka oblast • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=160.85&amp;materialsCitation.latitude=56.32" title="Search Plazi for locations around (long 160.85/lat 56.32)">Klutchi</a> [Klyuchi]; 56.32° N, 160.85° E; R. Malaise leg.; NHRS, NHRS-HEVA000006358.</p><p>Holotype  Amauronematus temporalis</p><p>FINLAND – South Ostrobothnia • ♀;  Alavus; 19 May 1937; A. Saarinen leg.; MZH, http://id.luomus. fi/GL.2476.</p><p>Host plants</p><p>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 .</p><p>Genetics</p><p>COI</p><p>Only one sequence (1087 bp) available, from a larva. The nearest neighbour, diverging by a minimum of 5.78%, is  Euura viduata .</p><p>Nuclear</p><p>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).</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, and Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FF0ED8C5973AF9B4FC03F9A1	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF0FD8CA9720F9B7FD75FA11.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura rectiserra (Lindqvist 1971) ZMUO.	<div><p>290  Euura rectiserra (Lindqvist, 1971)</p><p>Figs 304, 531</p><p>Decanematus rectiserra Lindqvist, 1971b: 8 .</p><p>Diagnosis</p><p>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 .</p><p>Female</p><p>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.</p><p>Male</p><p>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.</p><p>Type material examined</p><p>Holotype  Decanematus rectiserra</p><p>FINLAND – Central Ostrobothnia • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=23.567&amp;materialsCitation.latitude=63.819" title="Search Plazi for locations around (long 23.567/lat 63.819)">Kaarlela</a>; 63.819° N, 23.567° E; 3 Jun. 1968; J. Kangas; MZH, http://id.luomus.fi/GL.9211.</p><p>Host plants</p><p>Salix aurita .</p><p>Genetics</p><p>COI</p><p>Based on 4 specimens, maximum within-species distance is 4.41% and the nearest neighbour, diverging by a minimum of 0%, is  Euura viduatoides .</p><p>Nuclear</p><p>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).</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland.</p></div>	https://treatment.plazi.org/id/03BCA619FF0FD8CA9720F9B7FD75FA11	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF00D8C89729FA27FD0DF95E.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura viduata (Zetterstedt 1838) PR.	<div><p>291  Euura viduata (Zetterstedt, 1838)</p><p>Figs 306, 522–523</p><p>Tenthredo viduata Zetterstedt, 1838: 351 . Lectotype designated below.</p><p>Nematus striatipes Hartig, 1840: 26 . Lectotype designated below. Syn. nov.</p><p>Nematus lepidotus Hartig, 1840: 26 . Lectotype designated below. Synonymy by Konow (1905b).</p><p>Nematus palliceps Hartig, 1840: 25 . Lectotype designated below. Syn. nov.</p><p>Nematus brachyotus Förster, 1854a: 295–297 . Syntypes ♀♀ (ZSM), not located. Type locality: Germany, Aachen area. Synonymy by Konow (1905b).</p><p>Nematus luctuosus Förster, 1854a: 342–344 . Syntypes ♀♀ (ZSM), not located. Type locality: Germany, Aachen area. Synonymy by Konow (1895).</p><p>Nematus notatus Förster, 1854a: 298–299 . Lectotype designated below. Synonymy by Lindqvist (1941b).</p><p>Nematus vagus Zaddach, 1883 in Brischke 1883: 186–187. Syntypes ♀ ♂, probably destroyed (Blank &amp; Taeger 1998). Type localities: Russia, Kaliningrad [Königsberg]; Poland, Gdansk [Danzig]; Finland; Silesia. Synonymy by Konow (1895). Secondary homonym of  Tenthredo vaga Fabricius, 1781 [ Euura vaga].</p><p>Amauronematus viduatus var. lugens Enslin, 1915: 379 . Syntypes ♀♀, not located. Type locality: not stated. Synonymy by Muche (1975).</p><p>Amauronematus viduatus var. laetus Enslin, 1915: 379 . Lectotype designated below. Synonymy by Muche (1975).</p><p>Amauronematus (Brachycoluma) spaethi Liston, 2005: 272–273 . Syn. nov.</p><p>Diagnosis</p><p>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-GISHym31865, 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.</p><p>Female</p><p>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.</p><p>Male</p><p>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.</p><p>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 (1905b) 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.</p><p>Type material examined</p><p>Lectotype  Tenthredo viduata, here designated</p><p>SWEDEN – Norrbotten • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=23.506&amp;materialsCitation.latitude=67.192" title="Search Plazi for locations around (long 23.506/lat 67.192)">Kengis Bruk</a>; 67.192° N, 23.506° E; MZLU, MZLU2017260.</p><p>Notes</p><p>The slide preparation PR.721 VV was not located.</p><p>Lectotype  Nematus striatipes, here designated</p><p>GERMANY • ♂;  northern Germany [according to Hartig 1840: 22]; ZSM, DEI-GISHym12545.</p><p>Lectotype  Nematus lepidotus, here designated</p><p>GERMANY • ♂;  northern Germany [according to Hartig 1840: 22]; ZSM, DEI-GISHym12544.</p><p>Lectotype  Nematus palliceps, here designated</p><p>GERMANY • ♀;  northern Germany [according to Hartig 1840: 22]; ZSM, GBIF-GISHym3054.</p><p>Lectotype  Nematus notatus, here designated</p><p>GERMANY – Nordrhein-Westfalen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.09&amp;materialsCitation.latitude=50.77" title="Search Plazi for locations around (long 6.09/lat 50.77)">Aachen area</a>; 50.77° N, 6.09° E; ZSM, GBIF-GISHym3059.</p><p>Lectotype  Amauronematus viduatus var. laetus, here designated</p><p>GERMANY – Nordrhein-Westfalen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.58&amp;materialsCitation.latitude=51.34" title="Search Plazi for locations around (long 6.58/lat 51.34)">Crefeld</a> [Krefeld]; Ulbricht leg.; 51.34° N, 6.58° E; SDEI, GBIF-GISHym4105  .</p><p>Holotype  Amauronematus (Brachycoluma) spaethi</p><p>FRANCE – Corsica • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=9.24&amp;materialsCitation.latitude=41.57" title="Search Plazi for locations around (long 9.24/lat 41.57)">SW Porto Vecchio</a>, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=9.24&amp;materialsCitation.latitude=41.57" title="Search Plazi for locations around (long 9.24/lat 41.57)">Tamaricciu Valley</a>; 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-GISHym4104.</p><p>Host plants</p><p>A wide spectrum of  Salix spp. (Taeger et al. 1998; Macek et al. 2020).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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-GISHym31865.</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, France, Germany, Italy, Morocco, Norway, Sweden, Switzerland, and the United Kingdom.</p></div>	https://treatment.plazi.org/id/03BCA619FF00D8C89729FA27FD0DF95E	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF02D8CE9737F919FDC6FE1F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura viduatoides (Lindqvist 1960)	<div><p>292  Euura viduatoides (Lindqvist, 1960)</p><p>Figs 305, 525</p><p>Amauronematus viduatoides Lindqvist, 1960a: 127–129 .</p><p>Amauronematus branderi Lindqvist, 1969: 231–232 . Syn. nov.</p><p>Diagnosis</p><p>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.</p><p>Female</p><p>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.</p><p>Male</p><p>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.</p><p>Type material examined</p><p>Holotype  Amauronematus viduatoides</p><p>FINLAND – Uusimaa • ♀; Helsinki, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=24.85&amp;materialsCitation.latitude=60.18" title="Search Plazi for locations around (long 24.85/lat 60.18)">Lövö</a>; 60.18° N, 24.85° E; 9 Apr. 1952; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.9213.</p><p>Holotype  Amauronematus branderi</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=23.56&amp;materialsCitation.latitude=61.08" title="Search Plazi for locations around (long 23.56/lat 61.08)">Häme</a> • ♀; Urjala; 61.08° N, 23.56° E; 7 Jun. 1965; T. Brander leg.; MZH, http://id.luomus. fi/GL.9208.</p><p>Notes</p><p>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.</p><p>Host plants</p><p>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.</p><p>Genetics</p><p>COI</p><p>Only one sequence available. The nearest neighbour, diverging by a minimum of 0%, is  Euura rectiserra .</p><p>Nuclear</p><p>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).</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland.</p><p>Species not assigned to groups</p></div>	https://treatment.plazi.org/id/03BCA619FF02D8CE9737F919FDC6FE1F	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF04D8CF9739FE49FB8DFE50.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura anthracina (Lindqvist 1959) ZMUO.	<div><p>293  Euura anthracina (Lindqvist, 1959)</p><p>Figs 307, 532</p><p>Amauronematus anthracinus Lindqvist, 1959d: 11 .</p><p>Amauronematus macrophthalmus Lindqvist, 1959d: 13–14 . Syn. nov.</p><p>Amauronematus varians Lindqvist, 1962a: 120–121 . Syn. nov.</p><p>Diagnosis</p><p>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).</p><p>Type material examined</p><p>Holotype  Amauronematus anthracinus</p><p>FINLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=20.81&amp;materialsCitation.latitude=69.04" title="Search Plazi for locations around (long 20.81/lat 69.04)">Lapin Lääni</a> • ♀; Kilpisjärvi; 69.04° N, 20.81° E; 9 May 1951; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.3409.</p><p>Notes</p><p>Best morphological match: DEI-GISHym21425.</p><p>Holotype  Amauronematus macrophthalmus</p><p>FINLAND – Uusimaa • ♀; Helsinki, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=24.89&amp;materialsCitation.latitude=60.22" title="Search Plazi for locations around (long 24.89/lat 60.22)">Munksnäs</a> [Munkkiniemi]; 60.22° N, 24.89° E; 26 May 1935; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.2534.</p><p>Notes</p><p>Best morphological match: DEI-GISHym20974.</p><p>Holotype  Amauronematus varians</p><p>FINLAND – Uusimaa • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=24.9&amp;materialsCitation.latitude=60.3" title="Search Plazi for locations around (long 24.9/lat 60.3)">Helsinge</a> [Vantaa]; 60.30° N, 24.90° E; 20 May 1960; E. Lindqvist leg.; MZH, http://id.luomus.fi/GL.3554.</p><p>Notes</p><p>Best morphological match: DEI-GISHym20974. COI sequence (658 bp) of the holotype is identical to ZMUO.037292.</p><p>Host plants</p><p>Salix spp.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Norway, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF04D8CF9739FE49FB8DFE50	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF05D8CF973EFDE7FB8DF9A4.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura distinguenda (Enslin 1915) PR.	<div><p>294  Euura distinguenda (Enslin, 1915)</p><p>Figs 308, 533</p><p>Amauronematus distinguendus Enslin, 1915: 381 . Lectotype designated below.</p><p>Diagnosis</p><p>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 .</p><p>Type material examined</p><p>Lectotype  Amauronematus distinguendus, here designated</p><p>GERMANY – Sachsen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=13.53&amp;materialsCitation.latitude=50.97" title="Search Plazi for locations around (long 13.53/lat 50.97)">Tharandt</a>; 50.97° N, 13.53° E; W. Baer leg.; reared ex larva on  Salix sp.; ZSM, GBIF-GISHym3047.</p><p>Host plants</p><p>Salix fragilis,  S. phylicifolia (Kangas 1985),  S. pentandra,  S. acutifolia Willd.,  S. triandra .</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Germany, and Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FF05D8CF973EFDE7FB8DF9A4	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF05D8CC9736F9B3FB8DFC07.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura hyperborea (Thomson 1871) ZMUO.	<div><p>295  Euura hyperborea (Thomson, 1871)</p><p>Figs 309, 534</p><p>Nematus hyperboreus Thomson, 1871: 127–128 .</p><p>Amauronematus coracinus Lindqvist, 1959d: 14–15 . Holotype ♀ (BMNH), not examined. Type locality: Switzerland, Valais, Arolla. Synonymy by Benson (1961b).</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Holotype  Nematus hyperboreus</p><p>SWEDEN • ♀; Dalarna; C.H. Boheman leg.; NHRS, NHRS-HEVA000003844.</p><p>Host plants</p><p>Salix spp.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Norway, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF05D8CC9736F9B3FB8DFC07	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF06D8CD9721FC54FBE1FDF7.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura imperfecta (Zaddach 1876) ZMUO.	<div><p>296  Euura imperfecta (Zaddach, 1876)</p><p>Figs 311, 535</p><p>Nematus imperfectus Zaddach, 1876: 73, 80–81. Syntypes ♀♀, probably destroyed (Blank &amp; Taeger 1998). Type localities: Germany, Finland, Scotland and Poland.</p><p>Pachynematus imperfectus var. claristernis Enslin, 1916a: 484 . Lectotype designated below. Synonymy by Taeger et al. (2010).</p><p>Pachynematus (Larinematus) tatricus Roller &amp; Haris, 2008: 47–49 . Syn. nov.</p><p>Diagnosis</p><p>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).</p><p>Type material examined</p><p>Lectotype  Pachynematus imperfectus var. claristernis, here designated</p><p>GERMANY – Mecklenburg-Vorpommern • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=13.36&amp;materialsCitation.latitude=53.45" title="Search Plazi for locations around (long 13.36/lat 53.45)">Teschendorf in Mecklenburg</a>; 53.45° N, 13.36° E; 11 Apr. 1896; F.W. Konow leg.; ZSM, GBIF-GISHym3221  .</p><p>Holotype  Pachynematus (Larinematus) tatricus</p><p>SLOVAKIA – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=20.255&amp;materialsCitation.latitude=49.179" title="Search Plazi for locations around (long 20.255/lat 49.179)">High Tatra</a> • ♀; Tatranská Lomnica, Štart; 49.179° N, 20.255° E; 1150 m a.s.l.; 15 May 2007; O. Majzlan leg.; SNMC.</p><p>Notes</p><p>Photos examined.</p><p>Host plants</p><p>Larix spp.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Austria, Finland, Germany, and Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FF06D8CD9721FC54FBE1FDF7	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF07D8CD9771FD44FC50F9BE.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura itoi (Okutani 1955)	<div><p>297  Euura itoi (Okutani, 1955)</p><p>Fig. 536</p><p>Pachynematus itoi Okutani, 1955: 98–100 . Holotype ♀ (NSMT), not examined. Type locality: Japan, Nagano Prefecture, Soehi-mura. Types studied by  Hara et al. (2021).</p><p>Diagnosis</p><p>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.</p><p>Host plants</p><p>Larix spp. (Xiao et al. 1992; Pschorn-Walcher &amp; Altenhofer 2000). There may be up to two generations per year (Pschorn-Walcher &amp; Altenhofer 2000).</p><p>Genetics</p><p>COI</p><p>No data.</p><p>Nuclear No data.</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Czech Republic and Japan.</p></div>	https://treatment.plazi.org/id/03BCA619FF07D8CD9771FD44FC50F9BE	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF07D8F29733F9B9FCF5FA3D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura nigriventris (Holmgren 1883)	<div><p>298  Euura nigriventris (Holmgren, 1883)</p><p>Fig. 312</p><p>Nematus nigriventris Holmgren, 1883: 146, pl. 2 fig. 10. Lectotype designated below.</p><p>Amauronematus varianus MacGillivray, 1919: 16 . Lectotype designated below. Synonymy by Smith (1979).</p><p>Pteronidea melanostoma Rohwer, 1920: 212–213 . Holotype ♀ (USNMENT00779223, USNM, http:// n 2t.net/ark:/65665/3cc28254b-6cc4-4fd9-bb98-5784f9f4262b), not examined. Type locality: USA, West Aleutians, Saint George Island. Synonymy by Smith (1979). Looks more like  E. stordalensis or  E. opacipleuris (5 mm).</p><p>Diagnosis</p><p>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.</p><p>Female</p><p>6.5 mm (Lindqvist 1959a; 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.</p><p>Type material examined</p><p>Lectotype  Nematus nigriventris, here designated</p><p>RUSSIA – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=55.6&amp;materialsCitation.latitude=73.3" title="Search Plazi for locations around (long 55.6/lat 73.3)">Novaja Zemlya</a> • ♀; Matotschkin Scharr [Matochkin Strait]; 73.3° N, 55.6° E; 1875; NHRS, NHRS-HEVA000006477.</p><p>Lectotype  Amauronematus varianus, here designated</p><p>USA – Alaska • ♀; Camden Bay, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-145.36&amp;materialsCitation.latitude=70.02" title="Search Plazi for locations around (long -145.36/lat 70.02)">West of Konganevik</a>; 70.02° N, 145.36° W; 27 Jun. 1914; F. Johansen leg.; CNC, CNC1057058.</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>No data.</p><p>Nuclear No data.</p><p>Distribution and material examined</p><p>Holarctic. Specimens studied are from Russia and the USA.</p></div>	https://treatment.plazi.org/id/03BCA619FF07D8F29733F9B9FCF5FA3D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF38D8F3973AFA3CFEABF81E.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura poecilonota (Zaddach 1876)	<div><p>299  Euura poecilonota (Zaddach, 1876)</p><p>Figs 313, 537</p><p>Nematus continuus Eversmann, 1847: 19 . Nomen oblitum. Lectotype designated below. Syn. nov.</p><p>Nematus poecilonotus Zaddach, 1876: pl. II fig. 2. Nomen protectum. Syntypes ♀♀ (from Kopenhavn, ZMHB?), not located; others probably destroyed (Blank &amp; Taeger 1998). Type localities: Poland, Stogi [Heubude] and Gdansk [Danzig]; Denmark, Kopenhavn; Russia, Kaliningrad [Königsberg].</p><p>Nematus viridescens Cameron, 1885: 122–123 . Syntypes ♀♀ (BMNH?), not examined. Type localities: United Kingdom, Scotland, Mugdock near Glasgow and England, Norwich. Synonymy by Muche (1974).</p><p>Amauronematus nigridorsis Jakowlew, 1891: 25–26 . Syn. nov.</p><p>Pteronus hyalinus 
Marlatt, 1896a: 44–46 (key), 67–68. Holotype ♀ (USNMENT00778515, USNM, http://n 2t.net/ark:/65665/3b5d73de5-14af-47bd-b545-0fbf261e4b2f), not examined. Type locality: USA, New York.</p><p>Pteronidea subnitens Lindqvist, 1958: 98–99 . Synonymy by Lindqvist (1967b).</p><p>Notes</p><p>In accordance with Article 23.9.1 of the International Code of Zoological Nomenclature (ICZN 1999), we retain the junior name  poecilonota 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  continuus has not been used as valid since 1899. Examples of use of  poecilonotus or  poecilonota as the valid name for this taxon during the last fifty years: Verzhutskii 1981; Kangas 1985; Viitasaari &amp; Vikberg 1985; Liston 1995, 1997; Zhelochovtsev &amp; Zinovjev 1995; O’Connor et al. 1997; Blank &amp; Taeger 1998; Taeger et al. 1998, 2006, 2010; Viitasaari et al. 1998; Lacourt 1999, 2020; Blank et al. 2001; Haris 2002; Roller &amp; Haris 2008; Schedl 2009; Liston et al. 2014; Jansen 2015; Chevin &amp; Savina 2016; Sundukov 2017b; Macek et al. 2020; Prous et al. 2021; Humala 2024.</p><p>Diagnosis</p><p>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 .</p><p>Only one male is known (DEI-GISHym12527), confirmed to be this species based on a 207 bp sequence of COI that is identical to some of the females.</p><p>Type material examined</p><p>Lectotype  Nematus continuus, here designated</p><p>RUSSIA – Tatarstan • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=49.1&amp;materialsCitation.latitude=55.8" title="Search Plazi for locations around (long 49.1/lat 55.8)">Kasan Province</a>; 55.8° N, 49.1° E; 10 Jul.; E. Eversmann leg.; ZIN, DEIGISHym30049.</p><p>Holotype  Amauronematus nigridorsis</p><p>RUSSIA – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=104.24&amp;materialsCitation.latitude=52.29" title="Search Plazi for locations around (long 104.24/lat 52.29)">Irkutskaja oblast</a> • ♀; Irkutsk; 52.29° N, 104.24° E; ZIN, DEI-GISHym30177.</p><p>Holotype  Pteronidea subnitens</p><p>SWEDEN – Skåne • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=14.29&amp;materialsCitation.latitude=55.93" title="Search Plazi for locations around (long 14.29/lat 55.93)">Åhus</a>; 55.93° N, 14.29° E; 15 Jul. 1937; I. Agrell leg.; MZLU, MZLU2017316.</p><p>Host plants</p><p>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.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>Holarctic. Specimens studied are from Canada (only genetics), Estonia, Finland, Germany, Russia, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF38D8F3973AFA3CFEABF81E	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF3AD8F0975BFEEEFBF9FAFE.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura pumilio (Konow 1903)	<div><p>300  Euura pumilio (Konow, 1903)</p><p>Figs 314, 538</p><p>Pachynematus pumilio Konow, 1903a: 383 (key). Lectotype designated below.</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Lectotype  Pachynematus pumilio, here designated</p><p>GERMANY – Mecklenburg-Vorpommern • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=13.36&amp;materialsCitation.latitude=53.45" title="Search Plazi for locations around (long 13.36/lat 53.45)">Teschendorf in Mecklenburg</a>; 53.45° N, 13.36° E; Apr. 1896; F.W. Konow leg.; SDEI, GBIF-GISHym4122.</p><p>Paralectotypes  Pachynematus pumilio</p><p>GERMANY – Mecklenburg-Vorpommern • 1 ♀; same locality as for lectotype •  5 May 1893; SDEI, GBIF-GISHym4124 •  2 ♂♂; same locality as for lectotype; 29 Apr. 1903; SDEI, GBIF-GISHym4123, GBIF-GISHym4125 .</p><p>Host plants</p><p>Ribes nigrum (Hukkinen 1922) . Larvae feed singly inside the berries. One generation per year.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>Only one sequence available. The nearest neighbour, diverging by a minimum of 2.5%, is  Euura oligospila .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, Germany, Russia, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF3AD8F0975BFEEEFBF9FAFE	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF3AD8F19759FA79FBF8FABC.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura salicis (Linnaeus 1758)	<div><p>301  Euura salicis (Linnaeus, 1758)</p><p>Figs 310, 539</p><p>Tenthredo salicis Linnaeus, 1758: 557 . Syntypes, sex not stated. No extant type material is known. Type locality: Sweden.</p><p>Tenthredo capreae Linnaeus, 1758: 559 . Syntype larvae. Adults were not described. No extant type material is known. Type locality: Sweden. Synonymy by Schmidt et al. (1998).</p><p>Tenthredo notata O.F. Müller, 1776: 149 . Syntypes, sex not stated. No extant type material is known. Type locality: Denmark. Synonymy by Brischke (1883).</p><p>Nematus klugi Dahlbom, 1835a: pl. 40 fig. 6. Syntypes ♂♂ (MZLU), not examined. Type locality: Scandinavia. Synonymy by Brischke (1883) [confirmed by Schmidt et al. (1998)].</p><p>Nematus immaculatus Snellen van Vollenhoven, 1869: 95, 119. Lectotype ♂ (ZMAN), designated by Thomas (1987), not examined. Type locality: Belgium, Schoten. Synonymy by Brischke (1883).</p><p>Nematus inflatus Thomson, 1871: 139–140 . Lectotype designated below. Synonymy by Brischke (1883).</p><p>Pteronidea salicis var. obscurior Enslin, 1916a: 415 . Lectotype designated below. Synonymy by Muche (1974).</p><p>Diagnosis</p><p>Its large size (8.0–12.0 mm), extensively yellow body, and black costa and pterostigma enable its separation from other species of  Euura .</p><p>Type material examined</p><p>Lectotype  Nematus inflatus, here designated</p><p>SWEDEN – Skåne • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=13.19&amp;materialsCitation.latitude=55.71" title="Search Plazi for locations around (long 13.19/lat 55.71)">Lund</a>; 55.71° N, 13.19° E; MZLU, MZLU2017309.</p><p>Lectotype  Pteronidea salicis var. obscurior, here designated</p><p>GERMANY – Nordrhein-Westfalen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=7.07&amp;materialsCitation.latitude=51.17" title="Search Plazi for locations around (long 7.07/lat 51.17)">Solingen</a>; 51.17° N, 7.07° E; ZSM, GBIF-GISHym3369  .</p><p>Paralectotype  Pteronidea salicis var. obscurior</p><p>GERMANY – Nordrhein-Westfalen • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=7.07&amp;materialsCitation.latitude=51.17" title="Search Plazi for locations around (long 7.07/lat 51.17)">Solingen</a>; 51.17° N, 7.07° E; ZSM, GBIF-GISHym3370  .</p><p>Host plants</p><p>Salix spp., preferably  S. fragilis (Roininen &amp; Tahvanainen 1989), occasionally  Populus (Çalmasur &amp; Özbek 2006) . More than one generation per year in suitable conditions (Pschorn-Walcher &amp; Altenhofer 2000).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>Only one sequence available. The nearest neighbour, diverging by a minimum of 2.28%, is  Euura anthracina .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from Finland, France, Germany, and Sweden.</p></div>	https://treatment.plazi.org/id/03BCA619FF3AD8F19759FA79FBF8FABC	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF3BD8F7972FFABBFB7CFB2E.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura spiraeae (Zaddach 1883)	<div><p>302  Euura spiraeae (Zaddach, 1883)</p><p>Figs 88, 315–316, 540–541</p><p>Nematus spiraeae Zaddach, 1883 in Brischke 1883: 189. Syntypes ♀ ♂, should be in ZSM, but have not been located. Type locality: Germany, Munich area.</p><p>Pteronidea subflava Lindqvist, 1958: 100–102 . Suspected synonymy by Zhelohovcev &amp; Zinovjev (1988) is here confirmed. Syn. nov.</p><p>Nematus dengi Wei, 2003 in Wei &amp; Nie 2003: 54–55, 197. Holotype ♀ (CSFU), not examined. Type locality: China, Hubei, Xianfeng, Maheba.  Syn. nov.</p><p>Euura spiraeae okutaniana Hara &amp; Shinohara, 2022 in Hara et al. 2022: 10–16. Holotype ♀ (NSMT), not examined. Type locality: Japan, Honshu, Gifu Pref., Takayama, Okuhida Onsengo.  Syn. nov.</p><p>Euura spiraeae hokkaido Hara &amp; Shinohara, 2022 in Hara et al. 2022: 16. Holotype ♀ (NSMT), not examined. Type locality: Japan, Hokkaido, Utashinai, Nishiyama.  Syn. nov.</p><p>Diagnosis</p><p>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.</p><p>A female identified as  N. dengi in SDEI (DEI-GISHym83965) does not differ in any significant way from  E. spiraeae . The lancet of DEI-GISHym83965 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-GISHym1916) is possibly conspecific.</p><p>A male from Switzerland (DEI-GISHym14075) 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-GISHym1916).</p><p>The studied specimens from China (DEI-GISHym83965, DEI-GISHym1916) 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-GISHym14075; Fig. 540), but is slightly different from  dengi (DEI-GISHym1916; 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-GISHym83965), which otherwise fits  spiraeae hokkaido, the proportional relations of cerci and valvula 3 look similar to those in European specimens (Fig. 88A) while European specimens can look similar to  spiraeae okutaniana (Fig. 88B). 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.</p><p>Type material examined</p><p>Holotype  Pteronidea subflava</p><p>SWEDEN – Uppland • ♀; Stockholm, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=18.06&amp;materialsCitation.latitude=59.36" title="Search Plazi for locations around (long 18.06/lat 59.36)">Frescati</a>; 59.36° N, 18.06° E; R. Malaise leg.; NHRS, NHRS-HEVA000003961.</p><p>Host plants</p><p>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 &amp;Altenhofer 2000).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>Only one sequence available, a female with haplotypes diverging by 0%. The nearest neighbour, diverging by a minimum of 4.14%, is  Euura myosotidis .</p><p>Distribution and material examined</p><p>Palaearctic. Specimens studied are from China, Finland, France, Germany, and Switzerland.</p></div>	https://treatment.plazi.org/id/03BCA619FF3BD8F7972FFABBFB7CFB2E	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF3DD8F59741FB28FCF8FC9F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura vaga (Fabricius 1781)	<div><p>303  Euura vaga (Fabricius, 1781)</p><p>Figs 146, 542</p><p>Tenthredo vaga Fabricius, 1781: 415 . Syntypes (3 specimens in NHMD according to Zimsen 1964), sex not stated, not examined. Type locality: England.</p><p>Tenthredo flaviventris Gmelin, 1790: 2667 . Syntypes, sex not stated, not located. Type locality: Europe. Synonymy by Konow (1904c). Primary homonym of  Tenthredo flaviventris Retzius, 1783 [ Neurotoma saltuum (Linnaeus, 1758)].</p><p>Nematus leucogaster Hartig, 1840: 23 . Lectotype designated below. Synonymy by Konow (1904c).</p><p>Nematus hypoleucus Förster, 1854a: 304–305 . Lectotype designated below. Synonymy by Konow (1904c).</p><p>Nematus micraulius Förster, 1854b: 428–429 . Lectotype designated below. Synonymy by Konow (1904c).</p><p>Nematus punctipleuris Thomson, 1863: 628 . Lectotype designated below. Synonymy by Konow (1904c).</p><p>Nematus punctulatus Thomson, 1863: 626–627 . Lectotype designated below. Synonymy by Konow (1904c).</p><p>Nematus inconspicuus W.F. Kirby, 1882: 141 . Holotype ♀ (BMNH?), not examined. Type locality: New York. Synonymy by Benson (1962).</p><p>Pachynematus corticosus 
MacGillivray, 1901: 584–585 . Holotype ♀ (INHS), not examined. Type locality: USA, New York, Saranac Inn.</p><p>Holcocneme ulbrichti Enslin, 1910: 316–317 . Holotype ♀, not found in ZSM. Type locality: Germany, Nordrhein-Westfalen, Krefeld. Synonymy by Enslin (1915).</p><p>Pachynematus roscidus 
MacGillivray, 1921b: 31 . Holotype ♀ (INHS), not examined. Type locality: USA, Maine, Orono.</p><p>Pachynematus rugosulus Lindqvist, 1959b: 71 . Syn. nov.</p><p>Diagnosis</p><p>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.</p><p>Type material examined</p><p>Lectotype  Nematus leucogaster, here designated</p><p>GERMANY • ♀;  northern Germany [according to Hartig 1840: 22]; ZSM, GBIF-GISHym3334.</p><p>Lectotype  Nematus hypoleucus, here designated</p><p>GERMANY – Nordrhein-Westfalen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.09&amp;materialsCitation.latitude=50.77" title="Search Plazi for locations around (long 6.09/lat 50.77)">Aachen area</a>; 50.77° N, 6.09° E; ZSM, GBIF-GISHym3297.</p><p>Lectotype  Nematus micraulius, here designated</p><p>GERMANY – Nordrhein-Westfalen • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.09&amp;materialsCitation.latitude=50.77" title="Search Plazi for locations around (long 6.09/lat 50.77)">Aachen area</a>; 50.77° N, 6.09° E; ZSM, GBIF-GISHym3352.</p><p>Notes</p><p>Penis valves lost, but identified by Conde as  Pristiphora vaga .</p><p>Lectotype  Nematus punctipleuris, here designated</p><p>SWEDEN • ♀;  Norlandia [Lapland, probably Sweden]; MZLU, MZLU2017272.</p><p>Paralectotype  Nematus punctipleuris</p><p>SWEDEN • ♀;  Norlandia [Lapland, probably Sweden]; MZLU, MZLU2017273  .</p><p>Lectotype  Nematus punctulatus, here designated SWEDEN • ♀;  Torne Lappmark; MZLU, MZLU2017265</p><p>Paralectotypes  Nematus punctulatus</p><p>SWEDEN • 2 ♀♀;  Torne Lappmark; MZLU, MZLU 2017266, MZLU 2017269  •  2 ♀♀; [labels illegible]; MZLU, MZLU 2017267, MZLU 2017268 .</p><p>Holotype  Pachynematus rugosulus</p><p>NORWAY – Finnmark • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=23.85&amp;materialsCitation.latitude=69.77" title="Search Plazi for locations around (long 23.85/lat 69.77)">Jotkajavrek</a>; 69.77° N, 23.85° E; Jul. 1924; Expedition A. Strand leg.; ZMUN, NHMO:1000201217.</p><p>Notes</p><p>Basal quarter to third of metafemur brown, mesepisternum matt. Best morphological match: ZMUO.041887.</p><p>Host plants</p><p>Carex spp. More than one generation per year in suitable conditions (Lorenz &amp; Kraus 1957; Kangas 1985).</p><p>Genetics</p><p>COI</p><p>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.</p><p>Nuclear</p><p>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-GISHym15293) is included, maximum within-species distance is 0.8% (1.02% based on haplotypes of individual females).</p><p>Distribution and material examined</p><p>Holarctic. Specimens studied are from Canada, Estonia, Finland, France, Germany, Iceland, Norway, Russia, Slovakia, Sweden, United Kingdom, and the USA.</p></div>	https://treatment.plazi.org/id/03BCA619FF3DD8F59741FB28FCF8FC9F	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3FD8F59771FC95FE4BFBB7.text	03BCA619FF3FD8F59771FC95FE4BFBB7.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura alni Newman 1869	<div><p>304  Euura alni Newman, 1869</p><p>Euura alni Newman, 1869: 319–320 . Syntypes: galls on  Alnus leaves. Type locality: not stated.</p><p>Notes</p><p>Probably not a sawfly.</p></div>	https://treatment.plazi.org/id/03BCA619FF3FD8F59771FC95FE4BFBB7	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3FD8F59750FB82FD88FB6D.text	03BCA619FF3FD8F59750FB82FD88FB6D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura baltica (Enderlein 1908)	<div><p>305  Euura baltica (Enderlein, 1908)</p><p>Pteronus balticus Enderlein, 1908: 197, 217, 225. Holotype ♀, not located. Type locality: Poland,  Gdansk, Putziger Wiek.</p></div>	https://treatment.plazi.org/id/03BCA619FF3FD8F59750FB82FD88FB6D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3FD8F5975CFAECFAC4FA58.text	03BCA619FF3FD8F5975CFAECFAC4FA58.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura degeeri (Dufour 1847)	<div><p>306  Euura degeeri (Dufour, 1847)</p><p>Nematus degeeri Dufour, 1847: 587 . Syntypes: galls and larvae. No type material is known to exist. Host given as  Salix triandra . Type locality: France, Département Landes, Saint-Sever, banks of river l’Adour. It is not possible to identify  N. degeeri, because the description of the gall clearly indicates a species of the  Euura viminalis group, but no member of that group is known from  S. triandra .</p></div>	https://treatment.plazi.org/id/03BCA619FF3FD8F5975CFAECFAC4FA58	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3FD8F5975CFA1FFEBEF882.text	03BCA619FF3FD8F5975CFA1FFEBEF882.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura duplex (Serville 1823)	<div><p>307  Euura duplex (Serville, 1823)</p><p>Pristiphora duplex Serville, 1823: 76 . Lectotype ♀ (MRSN), not examined. Type locality: France, vicinity of Paris.</p><p>Notes</p><p>Belongs to the  E. clitellata group, and is perhaps conspecific with  E. obducta (Blank &amp; Taeger 1998: 165–166) .</p></div>	https://treatment.plazi.org/id/03BCA619FF3FD8F5975CFA1FFEBEF882	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF3FD8F5970DF8D6FDE0F839.text	03BCA619FF3FD8F5970DF8D6FDE0F839.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura flavominutissima (Haris 2001)	<div><p>308  Euura flavominutissima (Haris, 2001)</p><p>Nematus flavominutissimus Haris, 2001: 110 . Holotype ♀ (HNHM), not examined. Type locality: Hungary, Mecsek-hgs., Sikonda.</p></div>	https://treatment.plazi.org/id/03BCA619FF3FD8F5970DF8D6FDE0F839	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF30D8FA972CFEEEFA9FFE01.text	03BCA619FF30D8FA972CFEEEFA9FFE01.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura gracilis (Jakowlew 1891)	<div><p>309  Euura gracilis (Jakowlew, 1891)</p><p>Pachynematus gracilis Jakowlew, 1891: 27–28 . Holotype ♀, not found in ZIN. Type locality: Kyrgyzstan, vallis Alaji Magni. Possibly a secondary homonym of  Nematus gracilis Gimmerthal, 1834 .</p></div>	https://treatment.plazi.org/id/03BCA619FF30D8FA972CFEEEFA9FFE01	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF30D8FA973EFE48FCFEFD17.text	03BCA619FF30D8FA973EFE48FCFEFD17.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura gracilis (Gimmerthal 1834)	<div><p>310  Euura gracilis (Gimmerthal, 1834)</p><p>Nematus gracilis Gimmerthal, 1834: 122–123 . Syntypes ♀♀, probably lost or destroyed. Type locality: Livonia [Latvia and / or Estonia].</p><p>Notes</p><p>Length given as 4 lines [= 8.5 mm]. Possibly  Euura histrio .</p></div>	https://treatment.plazi.org/id/03BCA619FF30D8FA973EFE48FCFEFD17	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF30D8FA9723FD22FC4FFC18.text	03BCA619FF30D8FA9723FD22FC4FFC18.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura hololeucopus (Costa 1890)	<div><p>311  Euura hololeucopus (Costa, 1890)</p><p>Nematus hololeucopus Costa, 1890: 4 . Holotype ♀ (MZFN), not examined. Type locality: Greece.</p><p>Notes</p><p>Possibly a gall-maker, or some other  Euura (Ghigi 1905 a, 1905b).</p></div>	https://treatment.plazi.org/id/03BCA619FF30D8FA9723FD22FC4FFC18	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF30D8FA972CFC5FFEFBFBBF.text	03BCA619FF30D8FA972CFC5FFEFBFBBF.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura konowi (Jakowlew 1891) Prous & Liston & Monckton & Kramp & Vårdal & Vikberg & Heibo & Mutanen 2025	<div><p>312  Euura konowi (Jakowlew, 1891)</p><p>Pteronus konowi Jakowlew, 1891: 23 . Holotype ♀, not located. Type locality: Russia Stavropol Krai, Pyatigorsk.</p></div>	https://treatment.plazi.org/id/03BCA619FF30D8FA972CFC5FFEFBFBBF	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF30D8FA972DFBB9FDC8FA89.text	03BCA619FF30D8FA972DFBB9FDC8FA89.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura pallicercus (Hartig 1837)	<div><p>313  Euura pallicercus (Hartig, 1837)</p><p>Nematus pallicercus Hartig, 1837: 190–191 . Type locality: Harz, Germany. A female specimen (DEIGISHym12513) in NFVG under this name does not fit the original description. See comments under  N. palliceps [ Euura viduata].</p></div>	https://treatment.plazi.org/id/03BCA619FF30D8FA972DFBB9FDC8FA89	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF30D8FA975CFAC0FABDFA65.text	03BCA619FF30D8FA975CFAC0FABDFA65.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura pannonica Haris 2015	<div><p>314  Euura pannonica Haris, 2015</p><p>Pachynematus hungaricus Haris, 2001: 110–111 . Holotype ♂ (HNHM), not examined. Type locality: Hungary, Noszvaj Síkfökút. Secondary homonym of  Pontania hungarica Enslin, 1918 [ Euura viminalis (Linnaeus, 1758)].</p><p>Euura pannonica Haris, 2015: 55 . Replacement name for  Pachynematus hungaricus Haris, 2001 .</p></div>	https://treatment.plazi.org/id/03BCA619FF30D8FA975CFAC0FABDFA65	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF30D8FA9771F9F3FE4BF956.text	03BCA619FF30D8FA9771F9F3FE4BF956.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura pyri Newman 1869	<div><p>315  Euura pyri Newman, 1869</p><p>Euura pyri Newman, 1869: 320 . Syntypes: galls on  Pyrus leaves. Type locality: not stated.</p><p>Notes</p><p>Probably not a sawfly.</p></div>	https://treatment.plazi.org/id/03BCA619FF30D8FA9771F9F3FE4BF956	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF30D8FA9759F8E1FE4BF85B.text	03BCA619FF30D8FA9759F8E1FE4BF85B.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura quercus Newman 1869	<div><p>316  Euura quercus Newman, 1869</p><p>Euura quercus Newman, 1869: 320 . Syntypes: galls on Quercus leaves. Type locality: not stated.</p><p>Notes</p><p>Probably not a sawfly.</p></div>	https://treatment.plazi.org/id/03BCA619FF30D8FA9759F8E1FE4BF85B	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF31D8FB9713FEEFFDA4FE0E.text	03BCA619FF31D8FB9713FEEFFDA4FE0E.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura quinquemontana (Jakowlew 1891) Prous & Liston & Monckton & Kramp & Vårdal & Vikberg & Heibo & Mutanen 2025	<div><p>317  Euura quinquemontana (Jakowlew, 1891)</p><p>Pachynematus quinquemontanus Jakowlew, 1891: 27 . Holotype ♀, not located. Type locality: Russia, Stavropol Krai, Pyatigorsk.</p></div>	https://treatment.plazi.org/id/03BCA619FF31D8FB9713FEEFFDA4FE0E	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF31D8FB975AFE49FC20FA2A.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura togata (Zaddach 1876)	<div><p>318  Euura togata (Zaddach, 1876)</p><p>Nematus togatus Zaddach, 1876: pl. III fig. 3. Syntype larvae. Adult ♀ ♂ subsequently described in Brischke (1883: 170). Specimens probably destroyed (Blank &amp; Taeger 1998). Type locality: Poland, vicinity of Gdansk [Danzig]. Recorded host plant:  Corylus avellana .</p><p>Notes</p><p>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-GISHym84094 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.</p></div>	https://treatment.plazi.org/id/03BCA619FF31D8FB975AFE49FC20FA2A	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF31D8FB9743FA2CFA99F933.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura zaitzevi (Enslin 1919)	<div><p>319  Euura zaitzevi (Enslin, 1919)</p><p>Amauronematus zaitzevi Enslin, 1919b: 4–5 . Holotype ♀ (ZIN?), not examined. Type locality: Russia,  Polar Ural, at the source of the river Longot-johan.</p><p>Diagnosis</p><p>Mostly black, sawsheath in dorsal view strongly narrowed apically. Possibly  Euura lindqvisti ?</p></div>	https://treatment.plazi.org/id/03BCA619FF31D8FB9743FA2CFA99F933	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF31D8FB9716F906FD8BF859.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Nematus haemmorhoidalis Spinola 1808	<div><p>320  Nematus haemmorhoidalis Spinola, 1808</p><p>Nematus haemmorhoidalis Spinola, 1808: 20–21 . Syntypes ♀ ♂ (MRSN?), not examined. Type locality: Italy, Liguria.</p><p>Notes</p><p>Perhaps a species of  Euura .</p></div>	https://treatment.plazi.org/id/03BCA619FF31D8FB9716F906FD8BF859	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF32D8F8970CFDB3FCEBF9ED.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura brunneipicta (Lindqvist 1975)	<div><p>322  Euura brunneipicta (Lindqvist, 1975)</p><p>Fig. 317</p><p>Amauronematus brunneipictus Lindqvist, 1975: 16 .</p><p>Diagnosis</p><p>Superficially similar to  E. leionota, but with a different lancet. Probably belongs to  Euura, but its group affinity is unclear.</p><p>Type material examined</p><p>Holotype  Amauronematus brunneipictus</p><p>RUSSIA – Yakutia • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=120.43&amp;materialsCitation.latitude=60.37" title="Search Plazi for locations around (long 120.43/lat 60.37)">Oleminsk</a> [Olekminsk], <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=120.43&amp;materialsCitation.latitude=60.37" title="Search Plazi for locations around (long 120.43/lat 60.37)">on the River Lena</a>; 60.37° N, 120.43° E; 8 Jun. 1970; E. Kaimuk leg.; MZH, http://id.luomus.fi/GL.5124.</p><p>Notes</p><p>18 serrulae.</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>No data.</p><p>Nuclear No data.</p><p>Distribution and material examined</p><p>East Palaearctic. Only one specimen studied from Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FF32D8F8970CFDB3FCEBF9ED	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
03BCA619FF32D8F89705FEEEFD8BFE71.text	03BCA619FF32D8F89705FEEEFD8BFE71.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Nematus longicornis Eschscholtz 1822	<div><p>321  Nematus longicornis Eschscholtz, 1822</p><p>Nematus longicornis Eschscholtz, 1822: 93–94 . Syntypes, sex not stated, not located. Type locality: USA, Alaska, Aleutians, Unalaska Island.</p><p>Notes</p><p>Perhaps a species of  Euura .</p></div>	https://treatment.plazi.org/id/03BCA619FF32D8F89705FEEEFD8BFE71	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF32D8F994E6F96BFCA3FA0F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura chromata (Rohwer 1925) Prous & Liston & Monckton & Kramp & Vårdal & Vikberg & Heibo & Mutanen 2025	<div><p>323  Euura chromata (Rohwer, 1925) comb. nov.</p><p>Figs 318–319</p><p>Pristiphora chromata Rohwer, 1925: 11–12 .</p><p>Diagnosis</p><p>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 (DEIGISHym83879). Later generations (June–July and perhaps later) are completely or nearly completely pale (DEI-GISHym88888). 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-GISHym88888) 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 (DEIGISHym83879) 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.</p><p>Type material examined</p><p>Holotype  Pristiphora chromata</p><p>RUSSIA • ♀;  Kudia River, Amagu [Amgu]; Jul. 1923; T. Cockerell leg.; USNM, USNMENT00778815, http://n 2t.net/ark:/65665/37233f010-e9fd-4291-bfff-66c89cf313e8.</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>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.</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>East Palaearctic. Specimens studied are from Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FF32D8F994E6F96BFCA3FA0F	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF33D8FE9727FA4BFCEBFDB5.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura crassidens Lindqvist 1970	<div><p>324  Euura crassidens Lindqvist, 1970</p><p>Fig. 322</p><p>Amauronematus crassidens Lindqvist, 1970: 99–100 .</p><p>Diagnosis</p><p>Similar to  Euura minivittata sp. nov., but the serrulae are distinctly more broadly lobed. Nevertheless, conspecificity cannot be excluded.</p><p>Type material examined</p><p>Holotype  Amauronematus crassidens</p><p>RUSSIA – Irkutskaja oblast • ♀; Irkutsk, Oljhonsk, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=106.309&amp;materialsCitation.latitude=52.741" title="Search Plazi for locations around (long 106.309/lat 52.741)">Popovo</a>; 52.741° N, 106.309° E; 14 Apr. 1968; B.N. Verzhutskij leg.; MZH, http://id.luomus.fi/GL.5123.</p><p>Host plants</p><p>Salix sp. (Lindqvist 1970).</p><p>Genetics</p><p>COI</p><p>No data.</p><p>Nuclear No data.</p><p>Distribution and material examined</p><p>East Palaearctic. Only one specimen studied from Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FF33D8FE9727FA4BFCEBFDB5	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF34D8FE9722FD86FCEBFA42.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura filiformis (Lindqvist 1975)	<div><p>325  Euura filiformis (Lindqvist, 1975)</p><p>Fig. 321</p><p>Pachynematus filiformis Lindqvist, 1975: 19–20 .</p><p>Type material examined</p><p>Holotype  Pachynematus filiformis</p><p>RUSSIA – Buryatia • ♀; Tunkinsky, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=102.87&amp;materialsCitation.latitude=51.74" title="Search Plazi for locations around (long 102.87/lat 51.74)">Zun-Murino</a>; 51.74° N, 102.87° E; 30 May 1970; T. Dokitjuk leg.; MZH, http://id.luomus.fi/GL.5146.</p><p>Notes</p><p>Belongs to the  Euura bergmanni group: see discussion under  Euura chromata .</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>No data.</p><p>Nuclear No data.</p><p>Distribution and material examined</p><p>East Palaearctic. Only one specimen studied from Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FF34D8FE9722FD86FCEBFA42	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF34D8FF9734FA15FCB6FAE0.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura groenlandica (Malaise 1933)	<div><p>326  Euura groenlandica (Malaise, 1933)</p><p>Amauronematus groenlandicus Malaise, 1933: 3–4 .</p><p>Diagnosis</p><p>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-GISHym19806 (Abisko, Torne Lappmark, Sweden) and DEI-GISHym84010 (Finnmark, Norway). Similarly to DEI-GISHym19806 (but not DEI-GISHym84010), 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-GISHym84010), 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-GISHym19904, DEI-GISHym12101: 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.</p><p>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 (1959d; under the name  Amauronematus carbonarius) might refer to  E. obscuripes or some other similar  Euura .</p><p>Type material examined</p><p>Holotype  Amauronematus groenlandicus</p><p>GREENLAND – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-19.13&amp;materialsCitation.latitude=74.47" title="Search Plazi for locations around (long -19.13/lat 74.47)">Wollaston Forland</a> • ♀; Landingsdalen; 74.47° N, 19.13° W; 28 Jul. 1929; Knaben leg.; ZMUN.</p><p>Host plants</p><p>Not definitely known. Smith (1979) wrote “  Salix (?)”.</p><p>Genetics</p><p>COI</p><p>No data.</p><p>Nuclear No data.</p><p>Distribution and material examined</p><p>Nearctic. Only one specimen studied, from Greenland.</p></div>	https://treatment.plazi.org/id/03BCA619FF34D8FF9734FA15FCB6FAE0	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF35D8FC94CDFA77FC04FDCF.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura memoriakaszabi (Haris 2002) Prous & Liston & Monckton & Kramp & Vårdal & Vikberg & Heibo & Mutanen 2025	<div><p>327  Euura memoriakaszabi (Haris, 2002) comb. nov.</p><p>Pristiphora memoriakaszabi Haris, 2002: 72–73 .</p><p>Type material examined</p><p>Holotype  Pristiphora memoriakaszabi</p><p>MONGOLIA • ♀; Khentii, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=100.3&amp;materialsCitation.latitude=49.73" title="Search Plazi for locations around (long 100.3/lat 49.73)">Mörön</a> 7 km NE; 49.73° N, 100.30° E; 1200 m a.s.l.; 28–29 Jul. 1965; Z. Kaszab leg.; HNHM, DEI-GISHym80405.</p><p>Notes</p><p>Almost completely pale. Possibly a form of  E. annulata .</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>No data.</p><p>Nuclear No data.</p><p>Distribution and material examined</p><p>East Palaearctic. Only one specimen studied, from Mongolia.</p></div>	https://treatment.plazi.org/id/03BCA619FF35D8FC94CDFA77FC04FDCF	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF36D8FC975FFD8BFCECF902.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura oehlkei (Muche 1973)	<div><p>328  Euura oehlkei (Muche, 1973)</p><p>Fig. 107</p><p>Pachynematus oehlkei Muche, 1973b: 167–169 . Holotype ♀, not found in ZMHB (GBIF-GISHym2786), but the slide preparation of the lancet was located. Type locality: Kazakhstan,  Alma-Ata, Medeo.</p><p>Nematus (Pachynematus) tarani Zhelohovcev, 1976a: 62–63 . Holotype ♀ (ZMMU?), not examined. Type locality: Uzbekistan, Fergana District. Synonymized with  oehlkei by Muche (1981).</p><p>Diagnosis</p><p>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 1976a) does fit very well with the lancet of  oehlkei . Muche (1973b) and Zhelohovcev (1976a) also described males which are similar to  gehrsi in their dark colouration. Muche’s (1973b) drawing of the penis valve does not seem to be entirely accurate, but Zhelohovcev’s (1976a) drawing fits best with  gehrsi in overall shape, although the size of the valvispina fits better with  annulata .</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>No data.</p><p>Nuclear No data.</p><p>Distribution and material examined</p><p>East Palaearctic. Specimens studied are from Kazakhstan.</p></div>	https://treatment.plazi.org/id/03BCA619FF36D8FC975FFD8BFCECF902	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF36D8FD975FF954FCE3FCE0.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura pallens (Konow 1903)	<div><p>329  Euura pallens (Konow, 1903)</p><p>Fig. 320</p><p>Pteronus pallens Konow, 1903b: 310 (key). Lectotype designated by Prous et al. (2021).</p><p>Type material examined</p><p>Lectotype  Pteronus pallens</p><p>RUSSIA – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=104.24&amp;materialsCitation.latitude=52.29" title="Search Plazi for locations around (long 104.24/lat 52.29)">Irkutskaja oblast</a> • ♀; Irkutsk; 52.29° N, 104.24° E; B.E. Jakowleff leg.; SDEI, GBIFGISHym3863.</p><p>Notes</p><p>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 .</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>No data.</p><p>Nuclear No data.</p><p>Distribution and material examined</p><p>East Palaearctic. Only one specimen, studied from Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FF36D8FD975FF954FCE3FCE0	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF37D8E2970FFC68FCA3FE50.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura telos Liston & Prous 2025	<div><p>330  Euura telos Liston &amp; Prous nom. nov.</p><p>Fig. 543</p><p>Amauronematus terminalis Malaise, 1931b: 46–47 . Secondary homonym of  Pontania terminalis Marlatt, 1896 [ Euura terminalis (Marlatt, 1896)].</p><p>Diagnosis</p><p>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 .</p><p>Etymology</p><p>The replacement name  telos is the Greek noun τέλος, used in the figurative sense of an ending.</p><p>Type material examined</p><p>Holotype  Amauronematus terminalis</p><p>RUSSIA – Kamchatka oblast • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=160.85&amp;materialsCitation.latitude=56.32" title="Search Plazi for locations around (long 160.85/lat 56.32)">Klutchi</a> [Klyuchi]; 56.32° N, 160.85° E; R. Malaise leg.; NHRS, NHRS-000006399.</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear</p><p>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 .</p><p>Distribution and material examined</p><p>East Palaearctic. Specimens studied are from Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FF37D8E2970FFC68FCA3FE50	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF28D8E2971CFDE7FCD7F9E4.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura tiliae (Zinovjev 1998) Prous & Liston & Monckton & Kramp & Vårdal & Vikberg & Heibo & Mutanen 2025	<div><p>331  Euura tiliae (Zinovjev, 1998) comb. nov.</p><p>Nematus tiliae Zinovjev, 1998: 23–26 .</p><p>Diagnosis</p><p>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 &amp; 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.</p><p>Type material examined</p><p>Holotype  Nematus tiliae</p><p>JAPAN – Hokkaido • ♀; Akaigawa, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=140.898&amp;materialsCitation.latitude=43.013" title="Search Plazi for locations around (long 140.898/lat 43.013)">Meiji</a>; 43.013° N, 140.898° E; 11 Sep. 1996; M. Ohara leg.; NSMT, NSMT-HYM62118.</p><p>Host plants</p><p>Tilia maximowicziana Shiras. (Zinovjev 1998) .</p><p>Genetics</p><p>COI</p><p>No data.</p><p>Nuclear No data.</p><p>Distribution and material examined</p><p>East Palaearctic. Only one specimen studied, from Japan.</p></div>	https://treatment.plazi.org/id/03BCA619FF28D8E2971CFDE7FCD7F9E4	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF28D8E39733F974FBBCFB4A.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura trochanterata (Malaise 1931)	<div><p>332  Euura trochanterata (Malaise, 1931)</p><p>Pteronidea trochanterata Malaise, 1931a: 149–151 .</p><p>Nematus hequensis G.R. Xiao, 1990 . Holotype ♀ (CFRB?), not examined. Type locality: China, Shanxi Province, Hequ County.  Syn. nov.</p><p>Diagnosis</p><p>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,&gt;1000 bp) appears to be closest to  E. salicis and the  E. melanocephalus group.</p><p>Type material examined</p><p>Holotype  Pteronidea trochanterata</p><p>RUSSIA – Primorsky Kray • ♀; Vladivostok, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=131.96&amp;materialsCitation.latitude=43.21" title="Search Plazi for locations around (long 131.96/lat 43.21)">Sedanka</a>; 43.21° N, 131.96° E; 12 Aug. 1930; R. Malaise leg.; NHRS, NHRS-HEVA000006438.</p><p>Notes</p><p>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.</p><p>Host plants</p><p>Salix spp. and  Populus spp. (Wang et al. 2015).</p><p>Genetics</p><p>COI</p><p>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 .</p><p>Nuclear No data.</p><p>Distribution and material examined</p><p>East Palaearctic. Specimens studied are from China (only genetics), Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FF28D8E39733F974FBBCFB4A	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF29D8E0972DFB0FFCA3FDB6.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura variabilis (Malaise 1931)	<div><p>333  Euura variabilis (Malaise, 1931)</p><p>Fig. 278</p><p>Amauronematus variabilis Malaise, 1931b: 42–44 . Lectotype designated below.</p><p>Type material examined</p><p>Lectotype  Amauronematus variabilis, here designated</p><p>RUSSIA • ♀; Kamchatka oblast; R. Malaise leg.; NHRS, NHRS-HEVA000006365.</p><p>Paralectotype  Amauronematus variabilis</p><p>RUSSIA • ♀; Kamchatka oblast; R. Malaise leg.; NHRS, NHRS-HEVA000006364 .</p><p>Notes</p><p>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 &amp; Zinovjev (1995), but we exclude it here, because no confirmed specimens are known.</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>No data.</p><p>Nuclear No data.</p><p>Distribution and material examined</p><p>East Palaearctic. Specimens studied are from Russia.</p></div>	https://treatment.plazi.org/id/03BCA619FF29D8E0972DFB0FFCA3FDB6	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF2AD8E094EDFD82FD06FA94.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Euura wuyishanica (Wei 2003) Prous & Liston & Monckton & Kramp & Vårdal & Vikberg & Heibo & Mutanen 2025	<div><p>334  Euura wuyishanica (Wei, 2003) comb. nov.</p><p>Nematus wuyishanicus Wei, 2003 in Wei &amp; Nie 2003: 55, 197. Holotype ♀ (CSFU?), not examined. Type locality: China, Fujian, Wuyishan.</p><p>Notes</p><p>Probably belongs to the  E. bergmanni group, and might be a synonym of  E. respondens .</p><p>Host plants</p><p>Unknown.</p><p>Genetics</p><p>COI</p><p>No data.</p><p>Nuclear No data.</p><p>Distribution and material examined</p><p>East Palaearctic. No specimens studied.</p></div>	https://treatment.plazi.org/id/03BCA619FF2AD8E094EDFD82FD06FA94	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF2AD8E1973CFA9DFD6EFAE3.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Nematus umbratus Thomson 1871	<div><p>335  Nematus umbratus Thomson, 1871</p><p>Nematus breviusculus Eversmann, 1847: 17 . Nomen oblitum. Lectotype designated below. Was</p><p>incorrectly synonymised with  Euura melanocephalus (Hartig, 1837) by Prous et al. (2017). Syn. nov.  Nematus umbratus Thomson, 1871: 142–143 . Nomen protectum. Lectotype designated by Prous et al. (2019).</p><p>Pteronidea holmgreni Lindqvist, 1968: 192 . Synonymy by Liston et al. (2023).</p><p>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 &amp; Vikberg 1985; Zhelochovtsev 1988; Liston 1995, 1997; Zhelochovtsev &amp; Zinovjev 1995; Taeger et al. 1998, 2006, 2010; Lacourt 1999, 2020; Pschorn-Walcher &amp; Altenhofer 2000; Haris 2001; Liston et al. 2006; Roller &amp; Haris 2008; Schedl 2009; Prous et al. 2014, 2017, 2021; Macek &amp; Kula 2014; Chevin &amp; Savina 2016; Sundukov 2017b; Macek et al. 2020; Liston et al. 2023</p><p>Diagnosis (male)</p><p>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 1967a: 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:</p><p>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</p><p>b Basal third or half of valvar strut more or less at the ventral margin of paravalva</p><p>c Dorsobasal part of paravalva narrowing more abruptly .....................................  Nematus umbratus</p><p>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</p><p>bb Valvar strut distinctly removed from ventral margin of paravalva</p><p>cc Dorsobasal part of paravalva narrowing more gradually ...........................................  Euura pohjola</p><p>Type material examined</p><p>Lectotype  Nematus breviusculus, here designated</p><p>RUSSIA – Tatarstan • Gynandromorph; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=49.1&amp;materialsCitation.latitude=55.8" title="Search Plazi for locations around (long 49.1/lat 55.8)">Kasan Province</a>; 55.8° N, 49.1° E; 8 Jul.; E. Eversmann leg.; ZIN, DEI-GISHym30032.</p><p>Lectotype  Nematus umbratus</p><p>SWEDEN • ♀;  Lapponia Media [ central Lapland]; 25 Jul.; C.H. Boheman leg.; MZLU, MZLU2017310.</p><p>Holotype  Pteronidea holmgreni</p><p>SWEDEN – <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=19.74&amp;materialsCitation.latitude=68.22" title="Search Plazi for locations around (long 19.74/lat 68.22)">Torne Lappmark</a> • ♂; Torneträsk; 68.22° N, 19.74° E; 400 m a.s.l.; R. Malaise leg.; NHRS, NHRS-HEVA000004010.</p><p>Notes</p><p>The paratype female belongs to  E. leptostigma .</p></div>	https://treatment.plazi.org/id/03BCA619FF2AD8E1973CFA9DFD6EFAE3	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF2BD8E6971FFA76FB4AFEFD.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Platycampus luridiventris (Fallen 1808)	<div><p>336  Platycampus luridiventris (Fallén, 1808)</p><p>Tenthredo luridiventris Fallén, 1808: 115–116 . Syntypes ♀♀ (1 ♀ examined by Lindqvist (1956), MZLU). Type locality: Sweden.</p><p>Nematus emarginatus André, 1880a: 119 . Lectotype designated below. Junior primary homonym of  Nematus emarginatus Förster, 1854 . Syn. nov.</p><p>Nematus fennicus André, 1880a: 133 . Lectotype designated by Forsius (1920). Synonymy by Forsius (1920).</p><p>Type material examined</p><p>Lectotype  Nematus emarginatus, here designated</p><p>FRANCE • ♂;  southern France; Desbrochers leg.; ZIN, DEI-GISHym89374.</p><p>Lectotype  Nematus fennicus</p><p>FINLAND • ♀; Finland; Desbrochers leg.; ZIN, DEI-GISHym89373.</p><p>Notes</p><p>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.</p></div>	https://treatment.plazi.org/id/03BCA619FF2BD8E6971FFA76FB4AFEFD	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF2CD8E69721FE7CFADEFC40.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Pristiphora biscalis (Forster 1854)	<div><p>337  Pristiphora biscalis (Förster, 1854)</p><p>Fig. 544</p><p>Nematus biscalis Förster, 1854b: 326–327 . Lectotype ♀ (ZSM), designated by Prous et al. (2017).</p><p>Nematus meridionalis André, 1880a: 154 . Lectotype designated below. Syn. nov.</p><p>Type material examined</p><p>Lectotype  Nematus biscalis</p><p>GERMANY – Nordrhein-Westfalen • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=6.09&amp;materialsCitation.latitude=50.77" title="Search Plazi for locations around (long 6.09/lat 50.77)">Aachen area</a>; 50.77° N, 6.09° E; A. Förster leg.; ZSM, GBIFGISHym3698.</p><p>Lectotype  Nematus meridionalis, here designated</p><p>UNKNOWN COUNTRY •   ♂;  Pyrenees; ZIN, DEI-GISHym89376  .</p><p>Notes</p><p>Examination of the penis valve of the lectotype of  meridionalis establishes it as  Pristiphora biscalis .</p></div>	https://treatment.plazi.org/id/03BCA619FF2CD8E69721FE7CFADEFC40	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF2CD8E6972DFC08FC01FA7D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Pristiphora mollis (Hartig 1837)	<div><p>338  Pristiphora mollis (Hartig, 1837)</p><p>Nematus mollis Hartig, 1837: 201 . Lectotype ♀ (ZSM), designated by Prous et al. (2017).</p><p>Pachynematus penegalensis Enslin, 1911a: 176–177 . Syntype ♀. Lectotype designated below.</p><p>Type material examined</p><p>Lectotype  Nematus mollis</p><p>GERMANY – Niedersachsen • ♀; Harz; 51.8° N, 10.3° E; W. Saxesen leg.; ZSM, GBIF-GISHym3355.</p><p>Lectotype  Pachynematus penegalensis, here designated</p><p>ITALY – South Tirol • ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=11.22&amp;materialsCitation.latitude=46.43" title="Search Plazi for locations around (long 11.22/lat 46.43)">Penegal bei Bozen, in der Naehe des Gipfels</a>; 46.43° N, 11.22° E; 1700 m a.s.l.; ZSM, DEI-GISHym12487.</p><p>Notes</p><p>The synonymy proposed by Conde (1934) is here confirmed.</p></div>	https://treatment.plazi.org/id/03BCA619FF2CD8E6972DFC08FC01FA7D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European 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.text	03BCA619FF2CD8E79704F9FCFB59FECF.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Pristiphora wesmaeli (Tischbein 1853)	<div><p>339  Pristiphora wesmaeli (Tischbein, 1853)</p><p>Fig. 323</p><p>Nematus wesmaeli Tischbein, 1853: 347–348 . Syntypes ♀ ♂, probably destroyed. Type locality: Germany, Rheinland-Pfalz, near Herrstein.</p><p>Pachynematus edentatus Lindqvist, 1975: 19 . Holotype ♀, not found in MZH. Type locality: Russia, Republic of Buryatia, Tunkinsky, Zun-Murino.  Syn. nov.</p><p>Notes</p><p>A specimen in MZH (http://id.luomus.fi/GL.5147) labelled as the type of  edentatus cannot be the holotype because of the different locality on its label (unless there has been a mix-up). The specimen does not appear to differ from the original description (including the lancet) and therefore we treat  edentatus as a synonym of  Pristiphora wesmaeli, although synonymy instead with  P. glauca cannot be excluded, should it really be a species separate from  P. wesmaeli: see Prous et al. (2017).</p></div>	https://treatment.plazi.org/id/03BCA619FF2CD8E79704F9FCFB59FECF	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Prous, Marko;Liston, Andrew;Monckton, Spencer K.;Kramp, Katja;Vårdal, Hege;Vikberg, Veli;Heibo, Erik;Mutanen, Marko	Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik, Mutanen, Marko (2025): West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae). European Journal of Taxonomy 977: 1-377, DOI: 10.5852/ejt.2025.977.2799, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2799/12795
