Euura leionota ( Benson, 1933 )

Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik & Mutanen, Marko, 2025, West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae), European Journal of Taxonomy 977, pp. 1-377 : 61-62

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.

Figures

Figs 110–113. Lancets of Euura Newman, 1837. 110. leucopyga (Lindqvist, 1949), Amauronematus crassiserra Lindqvist, 1960, holotype, ♀ https://id.luomus.fi/GL.2525. 111. leucopyga DEI- GISHym21347. 112. leionota (Benson, 1933) PR.348VV. 113. mimus (Konow, 1903) PR.562VV.