128 Euura punctifrons (Malaise, 1921)

Figs 120, 361

Pachynematus punctifrons Malaise, 1921a: 9 . Lectotype designated below.

Pachynematus glabriceps Lindqvist, 1949: 84–85 . Syn. nov.

Diagnosis

The most similar species is E. uda, which is best distinguished by examination of saws and penis valves. In E. uda, tangium of lancet is more elongate, paravalva of penis valve is ventrally straight (concave in E. punctifrons) and anterior margin of paravalva below valvispina is straight or concave (convex in E. punctifrons). Euura uda tends to have also a larger subapical tooth of the claw than E. punctifrons .

Female

4.4–5.0 mm. Head black; labrum pale; clypeus black or slightly pale; supraclypeal area black; thorax black; pronotum black; tegula pale; pterostigma pale; metafemur mostly black to mostly pale; metatibia pale; hind tarsus pale to black; abdomen nearly completely black; valvula 3 black with dorsobasal pale area; mesepisternum smooth; claws with small subapical tooth; valvula 3 in dorsal view narrow and apically acute.

Male

4.5 mm. Head black; labrum pale; clypeus black or slightly pale; supraclypeal area black; thorax black; pronotum black; tegula black; pterostigma pale; metafemur black or slightly pale; metatibia pale; hind tarsus black or brown; abdomen black; sternum 9 pale; mesepisternum smooth or slightly matt; claws with minute subapical tooth.

Type material examined

Lectotype Pachynematus punctifrons, here designated

SWEDEN – Torne Lappmark • ♀; Torneträsk; 68.22° N, 19.74° E; 400 m a.s.l.; R. Malaise leg.; NHRS, NHRS-HEVA000003566.

Holotype Pachynematus glabriceps

FINLAND – Inari Lapland • ♀; Utsjoki; 69.91° N, 27.03° E; 6 Jul. 1947; M. Nuorteva leg.; MZH, http://id.luomus.fi/GL.3567.

Host plants

Unknown.

Genetics

COI

Based on 7 specimens, maximum within-species distance is 7.34% and the nearest neighbour, diverging by a minimum of 1.52%, is Euura connecta .

Nuclear

Based on 4 specimens, maximum within-species distance is 0.23% (0.12% based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.81%, is Euura gehrsi .

Distribution and material examined

Palaearctic. Specimens studied are from Finland, Norway, and Sweden.