Euura vaga
Creators: name: Prous, Marko
name: Liston, Andrew
name: Monckton, Spencer K.
name: Kramp, Katja
name: Vårdal, Hege
name: Vikberg, Veli
name: Heibo, Erik
name: Mutanen, Marko
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Tenthredinidae
Euura
Euura vaga

description: 303 Euura vaga (Fabricius, 1781)
Figs 146, 542
Tenthredo vaga Fabricius, 1781: 415. Syntypes (3 specimens in NHMD according to Zimsen 1964), sex not stated, not examined. Type locality: England.
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)].
Nematus leucogaster Hartig, 1840: 23. Lectotype designated below. Synonymy by Konow (1904c).
Nematus hypoleucus Förster, 1854a: 304–305. Lectotype designated below. Synonymy by Konow (1904c).
Nematus micraulius Förster, 1854b: 428–429. Lectotype designated below. Synonymy by Konow (1904c).
Nematus punctipleuris Thomson, 1863: 628. Lectotype designated below. Synonymy by Konow (1904c).
Nematus punctulatus Thomson, 1863: 626–627. Lectotype designated below. Synonymy by Konow (1904c).
Nematus inconspicuus W.F. Kirby, 1882: 141. Holotype ♀ (BMNH?), not examined. Type locality: New York. Synonymy by Benson (1962).
Pachynematus corticosus MacGillivray, 1901: 584–585. Holotype ♀ (INHS), not examined. Type locality: USA, New York, Saranac Inn.
Holcocneme ulbrichti Enslin, 1910: 316–317. Holotype ♀, not found in ZSM. Type locality: Germany, Nordrhein-Westfalen, Krefeld. Synonymy by Enslin (1915).
Pachynematus roscidus MacGillivray, 1921b: 31. Holotype ♀ (INHS), not examined. Type locality: USA, Maine, Orono.
Pachynematus rugosulus Lindqvist, 1959b: 71. Syn. nov.
Diagnosis
The female is most similar to E. obducta from which it differs in usually having a completely pale metafemur (extensively black in E. obducta), more triangular valvula 3 in dorsal view, and apically curved basal part of lamnium (more or less straight in E. obducta). Males, which are extremely rare in Europe, are best recognised by their penis valves. Abdomen sometimes also dorsally nearly completely pale (terga 3–10) (ZMUO.062019). Pterostigma varies in European specimens from yellowish to dark brown, in North America often (usually?) black.
Type material examined
Lectotype Nematus leucogaster, here designated
GERMANY • ♀; northern Germany [according to Hartig 1840: 22]; ZSM, GBIF-GISHym3334.
Lectotype Nematus hypoleucus, here designated
GERMANY – Nordrhein-Westfalen • ♀; Aachen area; 50.77° N, 6.09° E; ZSM, GBIF-GISHym3297.
Lectotype Nematus micraulius, here designated
GERMANY – Nordrhein-Westfalen • ♂; Aachen area; 50.77° N, 6.09° E; ZSM, GBIF-GISHym3352.
Notes
Penis valves lost, but identified by Conde as Pristiphora vaga.
Lectotype Nematus punctipleuris, here designated
SWEDEN • ♀; Norlandia [Lapland, probably Sweden]; MZLU, MZLU2017272.
Paralectotype Nematus punctipleuris
SWEDEN • ♀; Norlandia [Lapland, probably Sweden]; MZLU, MZLU2017273.
Lectotype Nematus punctulatus, here designated SWEDEN • ♀; Torne Lappmark; MZLU, MZLU2017265
Paralectotypes Nematus punctulatus
SWEDEN • 2 ♀♀; Torne Lappmark; MZLU, MZLU 2017266, MZLU 2017269 • 2 ♀♀; [labels illegible]; MZLU, MZLU 2017267, MZLU 2017268.
Holotype Pachynematus rugosulus
NORWAY – Finnmark • ♀; Jotkajavrek; 69.77° N, 23.85° E; Jul. 1924; Expedition A. Strand leg.; ZMUN, NHMO:1000201217.
Notes
Basal quarter to third of metafemur brown, mesepisternum matt. Best morphological match: ZMUO.041887.
Host plants
Carex spp. More than one generation per year in suitable conditions (Lorenz & Kraus 1957; Kangas 1985).
Genetics
COI
Based on 29 specimens, maximum within-species distance is 3.5% and the nearest neighbour, diverging by a minimum of 6.26%, is Euura miliaris. Including 8 specimens from North America does not change the results.
Nuclear
Based on 8 specimens, maximum within-species distance is 0.61% (1.02% based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 2.93%, is Euura fuscomaculata. When a specimen from North America (DEI-GISHym15293) is included, maximum within-species distance is 0.8% (1.02% based on haplotypes of individual females).
Distribution and material examined
Holarctic. Specimens studied are from Canada, Estonia, Finland, France, Germany, Iceland, Norway, Russia, Slovakia, Sweden, United Kingdom, and the USA.
description: Published as part of Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik & Mutanen, Marko, 2025, West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae), pp. 1-377 in European Journal of Taxonomy 977 on pages 230-232, DOI: 10.5852/ejt.2025.977.2799, http://zenodo.org/record/15019574