Euura hypoxantha (Förster, 1854)

Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik & Mutanen, Marko, 2025, West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae), European Journal of Taxonomy 977, pp. 1-377 : 132

publication ID	https://doi.org/10.5852/ejt.2025.977.2799
publication LSID	lsid:zoobank.org:pub:73DA044B-EB3D-4BF1-97EA-7430036DEEE0
persistent identifier	https://treatment.plazi.org/id/03BCA619-FF5B-D891-9723-FE18FEDAF857
treatment provided by	Plazi (2025-03-03 10:25:10, last updated 2025-03-13 15:51:31)
scientific name	Euura hypoxantha (Förster, 1854)
status

Treatment

185 Euura hypoxantha (Förster, 1854)

Figs 206 View Figs 203–206 , 430 View Figs 422–435

Nematus hypoxanthus Förster, 1854a: 313–314 . Lectotype designated below.

Nematus palliatus Thomson, 1863: 635 . Lectotype designated below. Synonymy by Konow (1904e).

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).

Pteronidea nigronota Lindqvist, 1958: 102 . Holotype ♀ (MZH?), not examined. Type locality: Finland, Munksnäs. Synonymy by Lindqvist (1959a).

Diagnosis

Females are most similar to E. jugicola . Mesepisternum is (usually?) extensively pale and black colour on abdominal terga decreases gradually from base to apex in E. hypoxantha , while mesepisternum is (usually?) black, and black colour on terga decreases abruptly from base to apex in E. jugicola . Also, the abdomen can be green in living E. hypoxantha females, but pink in E. jugicola . Details of the lancet (setae long and hair-like, all visible sutures in dorsal part inclined basally) and colouration (pale and round pterostigma, pale mesepisternum) should distinguish the species from the other Euura which have a lancet with the radix longer or about as long as lamnium. Males are extensively pale and have distinctive penis valves, with a large valvispina and a distinct hump dorsobasally.

Type material examined

Lectotype Nematus hypoxanthus , here designated

GERMANY – Nordrhein-Westfalen • ♂; Aachen area ; 50.77° N, 6.09° E; ZSM, DEI-GISHym3301 . GoogleMaps

Lectotype Nematus palliatus , here designated

SWEDEN – Skåne • ♀; Lund ; 55.71° N, 13.19° E; MZLU, MZLU2017322 About MZLU . GoogleMaps

Host plants

Many different Salix spp. (Taeger et al. 1998), less frequently Populus spp. ( Chambers 1952).

Genetics

COI

Based on 7 specimens, maximum within-species distance is 2.43% and the nearest neighbour, diverging by a minimum of 4.26%, is Euura poppii .

Nuclear

Based on 6 specimens, maximum within-species distance is 0.53% (0.19% based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 1%, is Euura jugicola .

Distribution and material examined

Palaearctic. Specimens studied are from Austria, Belgium, Estonia, Finland, Germany, Norway, Russia, and Sweden.

References

Cameron P. 1884. A new species of Nematus from England. The Entomologist's Monthly Magazine 21 (244): 80. https://doi.org/10.5962/bhl.part.22006

Chambers V. H. 1952. The sawflies of Flitwick Moor. The Bedfordshire Naturalist 1951 (6): 20-24. Chan K. O., Hutter C. R., Wood P. L., Su Y. - C. & Brown R. M. 2021. Gene flow Increases phylogenetic structure and inflates cryptic species estimations: A case study on widespread Philippine puddle frogs (Occidozyga laevis). Systematic Biology 71 (1): 40 - 57. https://doi.org/10.1093/sysbio/syab034

Forster A. 1854 a. Neue Blattwespen. Verhandlungen des naturhistorischen Vereines der preussischen Rheinlande und Westfalens 1: 265-350. Available from https://www.biodiversitylibrary.org/page/60190587 [accessed 20 Nov. 2024].

Konow F. W. 1904 e. Revision der Nematiden-Gattung Pteronus Jur. Knw. (Hym.) (Schluss.). Zeitschrift fur systematische Hymenopterologie und Dipterologie 4 (1): 33-44. Available from https://www.biodiversitylibrary.org/page/13747023 [accessed 20 Nov. 2024].

Lindqvist E. 1958. Neue palaarktische Pteronidea - Arten (Hym., Tenthredinoidea). Notulae Entomologicae 37 (4): 92-117.

Lindqvist E. 1959 a. Neue schwarze Pteronidea - Arten (Hym., Tenthr.). Notulae Entomologicae 39: 54-60.

Thomson C. G. 1863. Entomologiska bidrag. Ofversigt af Kongliga Vetenskaps-Akademiens forhandlingar 19 [1862]: 611-639. Available from https://www.biodiversitylibrary.org/page/15376419 [accessed 20 Nov. 2024].

Figures

Figs 203–206. Lancets ofEuura Newman, 1837.203. platystigma (Lindqvist, 1949) DEI-GISHym21413. 204. semiopaca (Lindqvist,1958)PR.567VV.205. tibialis(Newman, 1837)TUZ615775.206. hypoxantha (Förster, 1854) DEI-GISHym12505.

Figs 422–435. Penis valves of Euura Newman, 1837. 422. melanocephalus (Hartig, 1837) DEI- GISHym18642. 423. miliaris (Panzer, 1797) ZMUO.029496. 424. nigricornis? (Serville, 1823) Nr.18. 425. miltonota (Zaddach, 1883) DEI-GISHym13852. 426. nimbus (Benson, 1960) DEI-GISHym84209. 427. sagmarius (Konow, 1895) DEI-GISHym84692. 428. halo Prous, Liston & Mutanen sp. nov., paratype ZMUO.067421. 429. dissimilis (Förster, 1854) DEI-GISHym83932. 430. hypoxantha (Förster, 1854) DEI-GISHym3301. 431. jugicola (Thomson, 1871) DEI-GISHym88731 (Sweden). 432. jugicola DEI-GISHym15270 (Canada). 433. myosotidis (Fabricius, 1804) DEI-GISHym12003. 434. myosotidis ZMUO.058149. 435. platystigma (Lindqvist, 1949) DEI-GISHym83672.