117 Euura leionota (Benson, 1933)

Fig. 112

Pteronidea leionota Benson, 1933: 259–260 .

Pteronidea microserrata Lindqvist, 1941a: 68–69 . Syn. nov.

Pteronidea nigrita Lindqvist, 1958: 113–114 . Secondary homonym of Nematus nigritus Norton, 1861 (incertae sedis). Syn. nov.

Pteronidea clavicercus Lindqvist, 1958: 92–94 . Syn. nov.

Pteronidea verticalis Lindqvist, 1958: 94 . Syn. nov.

Nematus amaurus Vikberg, 1982 . Replacement name for Pteronidea nigrita Lindqvist, 1958 .

Diagnosis

Most similar to E. connecta: see differences mentioned under that species.

Female

5.0–7.0 mm. Head extensively to mostly pale; labrum, clypeus and supraclypeal area pale; flagellum black or ventrally pale; thorax dorsally extensively pale (sometimes black?), ventrally extensively or nearly completely pale; pterostigma uniformly pale, brown, or with dark margins; abdomen dorsally mostly black, ventrally completely pale; metafemur and metatibia pale; hind tarsus pale or brown; mesepisternum smooth; claws bifid; valvula 3 in dorsal view with blunt tip.

Male

Not known for certain.

Type material examined

Holotype Pteronidea leionota

UNITED KINGDOM – England • ♀; Devon, Great Haldons; 50.63° N, 3.57° W; Apr. 1926; R.C.L. Perkins leg.; BMNH, B.M.TYPEHYM.1.634.

Notes

22 serrulae.

Holotype Pteronidea microserrata

FINLAND – Uusimaa • ♀; Kirkkonummi; 60.126° N, 24.439° E; R. Frey leg.; MZH, http://id.luomus. fi/GL.9221.

Notes

21 serrulae.

Holotype Pteronidea nigrita

SWEDEN – Torne Lappmark • ♀; Abisko; 68.35° N, 18.83° E; 25–30 Jun. 1954; J.E. and R.B. Benson leg.; BMNH, B.M.TYPEHYM.1.784.

Notes

20–21 serrulae; 6 mm.

Holotype Pteronidea clavicercus

FINLAND – Häme • ♀; Pirkkala; 61.466° N, 23.642° E; 13 Jun. 1935; T. Grönblom leg.; MZH, PR.558VV.

Notes

21 serrulae. Best morphological match: DEI-GISHym12042 (22 serrulae).

Holotype Pteronidea verticalis

FINLAND – Satakunta • ♀; Björneborg [Pori]; 61.49° N, 21.81° E; 17 May 1935; E. Lindqvist leg.; MZH, PR.557VV.

Notes

23 serrulae. Best morphological match: DEI-GISHym12042 (22 serrulae).

Host plants

Betula pendula Roth and B. pubescens .

Genetics

COI

Based on 7 specimens, maximum within-species distance is 0.31% and the nearest neighbour, diverging by a minimum of 1.37%, is Euura sordidiapex .

Nuclear

Based on 6 specimens, maximum within-species distance is 0.16% (0.14% based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.31%, is Euura leucopyga .

Distribution and material examined

Palaearctic. Specimens studied are from Finland, Norway, Slovakia, Sweden, and the United Kingdom.