Euura fahraei

150 Euura fahraei (Thomson, 1863) Figs 149, 383 Nematus fahraei Thomson, 1863: 637 [mandatory correction of original spelling fåhraei]. Lectotype designated below. Nematus melanodus Zaddach, 1884 in Brischke 1884: 133. Holotype ♂, probably destroyed (Blank & Taeger 1998). Type locality: Prussia? [leg. Andersch]. Synonymy by Konow (1895). Pteronidea brunnea Lindqvist, 1971b: 11. Secondary homonym of Nematus brunneus Norton, 1864 [= Euura brunnea (Norton, 1864)]. Syn. nov. Nematus brunnescens Vikberg, 1982: 63. Replacement name for Pteronidea brunnea Lindqvist, 1971. Diagnosis 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. Type material examined Lectotype Nematus fåhraei, here designated SWEDEN – Skåne • ♀; Ringsjön; 55.88° N, 13.51° E; C.G. Thomson leg.; MZLU, MZLU2017305. Holotype Pteronidea brunnea FINLAND – Uusimaa • ♀; Espoo, Vantaa; 60.25° N, 24.90° E; 27 May 1967; V.J. Karvonen leg.; MZH, http://id.luomus.fi/GL.3466. Host plants Populus tremula. Genetics COI 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). Nuclear Based on 2 specimens, maximum within-species distance is 0.05%. The nearest neighbour, diverging by a minimum of 1.46%, is Euura bicolor. Distribution and material examined Palaearctic. Specimens studied are from Bulgaria, Estonia, Finland, Germany, Russia, Sweden, and the United Kingdom.