Euura malaisei

288 Euura malaisei (Hellén, 1970) Figs 301, 530 Decanematus longiserra Malaise, 1931b: 31–32.Secondary homonym of Nematus longiserra Thomson, 1863 [= Euura longiserra (Thomson, 1863)]. Amauronematus malaisei Hellén, 1970: 7. Replacement name for Decanematus longiserra Malaise, 1931. Diagnosis Females are most similar to E. erecta: see differences mentioned under that species. Penis valves are very similar to E. leucolena and E. rectiserra. Dorso-apically, the valviceps might be more expanded in E. malaisei than in E. leucolena and E. rectiserra. Female 5.0 (6.5) mm. Head black; labrum black or brown; clypeus black; supraclypeal area black; thorax black; pronotum black; tegula black; pterostigma centrally paler than externally; metafemur black or apically pale; metatibia brown or pale; hind tarsus black; abdomen black; hypopygium black or posteriorly slightly pale; valvifer 2 at least partly pale or brown; tergum 9 black to extensively pale; tergum 10 black or slightly pale; valvula 3 basally slightly pale; cerci pale with darkened tip; mesepisternum slightly matt; valvula 3 long, in dorsal view gradually narrowing, with acute tip. Male 4.0– 4.5 mm. Head black; labrum black or brown; clypeus black; supraclypeal area black; thorax black; pronotum black; tegula black; pterostigma centrally paler than externally; metafemur black or apically pale; metatibia brown or pale; hind tarsus black; sternum 9 pale; mesepisternum slightly matt; projection of tergum 8 small. Type material examined Holotype Decanematus longiserra RUSSIA – Kamchatka oblast • ♀; Klutchi [Klyuchi]; 56.32° N, 160.85° E; R. Malaise leg.; NHRS, NHRS-HEVA000006442. Notes Holotype length 6.5 mm, or 6.9 mm including valvula 3. Host plants Salix glauca, S. lanata. Genetics COI Based on 6 specimens, maximum within-species distance is 3.75% and the nearest neighbour, diverging by a minimum of 0%, is Euura leucolena. Nuclear Based on 6 specimens, maximum within-species distance is 0.59% (0.51% based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.17%, is Euura erecta (ZMUO.063230). Distribution and material examined Palaearctic. Specimens studied are from Finland, and Russia.