Euura aceroserra Taeger & Blank 2014

233 Euura aceroserra Taeger & Blank, 2014 Figs 253, 492 Amauronematus acutiserra Lindqvist, 1974b: 19. Secondary homonym of Pontania acutiserra Lindqvist, 1949 [= Euura acutiserra (Lindqvist, 1949)]. Euura aceroserra Taeger & Blank, 2014 in Prous et al. 2014: 52. Replacement name for Amauronematus acutiserra Lindqvist, 1974. Diagnosis Females are very similar to E. humeralis. Valvula 3 seems to be longer than in E. humeralis and the ventral margin is angled in lateral view (rounded in E. humeralis). Males are also very similar externally, but the valviceps is dorsally more or less straight in E. aceroserra and strongly convex in E. humeralis. Also, the valvispina may be more elongate in E. aceroserra and stouter in E. humeralis. Type material examined Holotype Amauronematus acutiserra NORWAY – Troms • ♀; Helligskogen; 69.20° N, 20.72° E; 19 Jun. 1967; O. Ranin leg.; MZH, http://id.luomus.fi/GL.5117. Host plants Salix sp. based on ex larva reared female ZMUO.043917. Genetics COI Based on 3 specimens, maximum within-species distance is 0% and the nearest neighbours, diverging by a minimum of 0.61%, are Euura humeralis and E. telos. Nuclear Based on 2 specimens, maximum within-species distance is 0.2% (0.34% based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.41%, is Euura humeralis. Distribution and material examined Palaearctic. Specimens studied are from Finland, Norway, and Sweden. May be restricted to arctic or subarctic habitats, while the closely related E. humeralis has a more southern distribution.