Euura humeralis

234 Euura humeralis (Serville, 1823) Figs 254, 493 Nematus humeralis Serville, 1823: 68. No types found in MNHN (Lacourt 2000). Type locality: France, Soissonnais. Nematus incanus Förster, 1854a: 302–304. Lectotype designated below. Synonymy by Konow (1895). Diagnosis Very similar to E. aceroserra, see differences discussed under that species. Type material examined Lectotype Nematus incanus, here designated GERMANY – Nordrhein-Westfalen • ♀; Aachen area; 50.77° N, 6.09° E; ZSM, GBIF-GISHym3050. Host plants Salix spp. such as S. aurita (Kontuniemi 1960), S. caprea (Kangas 1985), S. cinerea (Benander 1966), S. starkeana Willd. Genetics COI Based on 10 specimens, maximum within-species distance is 2.45% and the nearest neighbours, diverging by a minimum of 0.61%, are Euura aceroserra and E. telos. Nuclear Based on 6 specimens, maximum within-species distance is 0.54% (0.56% based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.41%, is Euura aceroserra. Distribution and material examined Palaearctic. Specimens studied are from Austria, Bulgaria, Finland, France, Germany, and Sweden.