Euura stordalensis

244 Euura stordalensis (Strand, 1905) Figs 263, 473 Nematus stordalensis Strand, 1905: 7–8. Lectotype designated by Vikberg (1970a). Nematus marginifer Strand, 1905: 8. Synonymy by Benson (1962). Amauronematus cogitatus MacGillivray, 1919: 15–16. Synonymy by Benson (1962). Amauronematus speciosus Hellén, 1951b: 106–107. Lectotype designated by Vikberg (1970a). Syn. nov. Diagnosis Closely related to E. opacipleuris, see differences mentioned under that species. Type material examined Lectotype Nematus stordalensis CANADA – Ellesmere Island • ♀; Havnefjorden, Havnen; 77.9° N, 81.7° W; 18 Jun. 1900; ZMUN, NHMO:1000200592 / PR316VV. Notes Length 6.7 mm. Best morphological match is N13682 (about 6 mm and slightly darker). Holotype Nematus marginifer CANADA – Ellesmere Island • ♂; Beistadfjorden (Bunden av Kjödfjorden); 77.9° N, 81.7° W; 9 Jun. 1899; Simmons leg.; ZMUN, NHMO:1000199953 / PR317VV. Notes Penis valve (Vikberg 1970a: fig. 7) not distinguishable from European specimens (e.g., DEIGISHym12097). Holotype Amauronematus cogitatus USA – Alaska • ♀; Demarcation Point; 69.648° N, 141.233° W; 14 May 1914; F. Johansen leg.; emerged from cocoon 23 Jun. 1914; CNC, CNC1056982. Lectotype Amauronematus speciosus FINLAND – Kittilä Lapland • ♀; Muonio, Pallastunturi; 68.100° N, 23.999° E; 22 Jun. 1942; W. Hellén leg.; MZH, http://id.luomus.fi/GL.2762. Host plants Salix herbacea and possibly other dwarf willows. Genetics COI Based on 9 specimens, maximum within-species distance is 1.67% and the nearest neighbours, diverging by a minimum of 0%, are Euura rufa, E. schlueteri, and E. striata. Nuclear Based on 8 specimens, maximum within-species distance is 0.76% (0.69% based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.36%, is Euura opacipleuris. Distribution and material examined Holarctic. Specimens studied are from Canada, Finland, Norway, and the USA.