Euura hulteni ZMUO.

262 Euura hulteni (Malaise, 1931) Figs 281, 484 Amauronematus variabilis var. hulteni Malaise, 1931b: 43. Mandatory correction of original spelling hulténi. Lectotype designated below. Amauronematus nylundi Lindqvist, 1969: 232–233. Syn. nov. Diagnosis Females (5–6 mm) typically have mesepisternum black to dorsally reddish; black mesepimeron; extensively black mesonotum; costa and pterostigma mostly yellowish or pale brown with costa usually centrally darker and pterostigma posteriorly dark-lined; pale abdominal sterna (but mostly black downturned parts of terga 2–7); and femora with black lines dorsally and ventrally. Euura hedstroemi and E. tillbergi females have nearly completely pale metafemur or metafemur is black basally in E. tillbergi (instead of dark-lined dorsally and ventrally as in E. hulteni). The abdominal terga of Euura vittata females are typically completely pale laterally (typically extensively black in E. hulteni) and are often larger (5.5–7.5 mm). Euura minivittata sp. nov. females have a darker pterostigma (uniformly brown or centrally somewhat paler) and are smaller (less than 5 mm). However, occasionally females of E. hulteni might not be distinguishable from the above-mentioned species. For example, some specimens (e.g., DEI-GISHym84439) with a completely or nearly completely pale mesepisternum, at least partly pale mesepimeron, mostly pale mesonotum, completely pale femora and pterostigma can be found, making them indistinguishable from some specimens of E. vittata. Males might not be distinguishable from those of E. hedstroemi, E. vittata, and E. minivittata. Type material examined Lectotype Amauronematus variabilis var. hulteni, here designated RUSSIA – Kamchatka oblast • ♀; Nischne-Kamtchatsk, Lake Azhabachye; 56.166° N, 161.893° E; R. Malaise leg.; NHRS, NHRS-HEVA000006409. Notes Length 5.3 mm. Thorax and abdomen largely black, mesepisternum and abdomen ventrally slightly pale; terga 9–10 extensively pale; head extensively pale around eyes; malar space about 1.2–1.5 times as long as diameter of front ocellus; hind femora dorsally and ventrally black. Best match: ZMUO.031351, ZMUO.033758. Holotype Amauronematus nylundi FINLAND – Häme • ♀; Forssa; 60.82° N, 23.63° E; 31 May 1966; E. Nylund leg.; MZH, http://id.luomus. fi/GL.2747. Notes Best morphological match: DEI-GISHym84197. Host plants Salix aurita and S. repens. There is also one rearing batch (rearing code 43/2017) of a few specimens from S. purpurea (e.g., sequenced specimen ZMUO.033807) planted in University of Oulu botanical garden, but this may require confirmation. For Amauronematus nylundi, Lindqvist (1969: 233) mentions larvae reared from S. phylicifolia (the holotype is not among them), which may refer to the very similar E. hedstroemi. Genetics COI Based on 14 specimens, maximum within-species distance is 1.82% and the nearest neighbours, diverging by a minimum of 0%, are Euura vittata and E. hedstroemi. Specimens belong to BOLD:ABU6129. Nuclear Based on 14 specimens, maximum within-species distance is 0.66% (0.61% based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.47%, is Euura vittata. Distribution and material examined Palaearctic. Specimens studied are from Finland, and Russia.