Euura tibialis ( Newman, 1837 )

Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, 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 : 137-138

190 Euura tibialis ( Newman, 1837)

Figs 205 , 438

Nematus tibialis Newman, 1837: 260 . Syntypes ♀♀, not located. Type locality: United Kingdom, England, Isle of Wight.

Nematus hortensis Hartig, 1837: 197 . Lectotype designated below. Synonymy by Cameron (1876c).

Nematus xanthobaptus Förster, 1854b: 430–431 . Lectotype designated below. Synonymy with N. hortensis by Kriechbaumer (1885).

Nematus trilineatus Norton, 1867: 215 . Holotype ♀ (ANSP Type no. 10334, ANSP), not examined. Type locality: Canada.

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).

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.

Nematus robiniae Forbes, 1885: 116 . Holotype ♀ (INHS), not examined. Type locality: USA, Illinois, Normal.

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.

Diagnosis

Bifid claws, valvula 3 (narrow and pointed in dorsal view), penis valves, and colour pattern enable reliable identification of the species. The body is dorsally at least partly black, laterally and ventrally completely or nearly completely pale and antenna, metatibia, and metatarsus are black. Males are extremely rare.

Type material examined

Lectotype Nematus hortensis , here designated

GERMANY • ♀; ZSM, GBIF-GISHym3292 .

Lectotype Nematus xanthobaptus , here designated

GERMANY – Nordrhein-Westfalen • ♀; Köln ; 50.95° N, 6.95° E; ZSM, GBIF-GISHym3458 .

Host plants

Trees of the Fabaceae . In the West Palaearctic, Robinia pseudoacacia L. is the usual host plant, but other species of Robinia L. ( Liston 2011) and Sophora japonica L. ( Schedl 2010) are occasionally used, and in North America Gleditsia triacanthos L. ( Raizenne 1957).

Genetics

COI

Based on 5 specimens, maximum within-species distance is 1.07% and the nearest neighbours, diverging by a minimum of 7.49%, are Euura connecta , E. leptostigma , and E. leucopyga .

Nuclear

Only one sequence available, a female with haplotypes diverging by 0.17%. The nearest neighbour, diverging by a minimum of 1.41%, is Euura myosotidis .

Distribution and material examined

Holarctic. Specimens studied are from Belgium, Bulgaria, Estonia, Germany, Italy, and Romania.

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 436–449. Penis valves of Euura Newman, 1837. 436. semiopaca (Lindqvist, 1958) DEI- GISHym88881. 437. semiopaca? PR.566VV. 438. tibialis (Newman, 1837) DEI-GISHym12515. 439. frenalis (Thomson, 1888) DEI-GISHym12057.440. oligospila (Förster, 1854) DEI-GISHym21395. 441. montana (Zaddach, 1883) DEI-GISHym84264.442. pallescens (Hartig, 1837) DEI-GISHym12148. 443. styx (Benson, 1958) http://id.luomus.fi/NG.1551. 444. styx paratype. 445. papillosa (Retzius, 1783) ZMUO.040796. 446. pavida (Serville, 1823) DEI-GISHym83970. 447. pavida ZMUO.030817. 448. amentorum (Förster, 1854) http://id.luomus.fi/GP.110189. 449. dahlbomi (Thomson, 1871) http://id.luomus.fi/GP.110190.