Euura lethe Prous & Liston 2014

254 Euura lethe Prous & Liston, 2014 Figs 277, 504 Amauronematus atratus Lindqvist, 1961b: 6–8. Secondary homonym of Pontania atrata MacGillivray, 1919 [Euura atrata (MacGillivray, 1919)]. Euura lethe Prous & Liston, 2014 in Prous et al. 2014: 52. Replacement name for Amauronematus atratus Lindqvist, 1961. Åttböle. Diagnosis The females are most similar to E. ranini (E. punicea group), which have a similar lancet. Mesepisternum and mesonotum may be darker (perhaps never with reddish markings as in E. ranini) and the basal annuli of the lancet seem to be broader than in E. ranini. Lancet is very similar to E. variabilis (not known from the West Palaearctic), but malar space is distinctly or slightly shorter (1.4–1.6 times as long as diameter of front ocellus) than in E. variabilis (1.7–1.8 times). We have tentatively associated a male (DEI-GISHym80762) from Primorsky Krai (Russia) with the Finnish females as the rather large genetic distance based on nuclear genes still falls within the variation observed in many other Euura. Male 6 mm. Type material examined Holotype Amauronematus atratus FINLAND – Ahvenanmaa • ♀; Åttböle; 60.243° N, 19.908° E; 20 May 1945; A. Nordman leg.; MZH, http://id.luomus.fi/GL.3411. Host plants Salix fragilis, S. pentandra. Genetics COI Based on 5 specimens, maximum within-species distance is 2.3% and the nearest neighbour, diverging by a minimum of 3.53%, is Euura tillbergi. Nuclear Based on 3 specimens, maximum within-species distance is 1.05% (0.01% based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 1.19%, is Euura tunicata. Distribution and material examined Palaearctic. Specimens studied are from Finland, and Russia.