Tenthredopsis coquebertii (Klug, 1817)

Tenthredopsis coqueberti

One of six species recorded in Britain. A difficult group to identify due to the extreme variability in colour. This group is likely to undergo taxonomic changes in the future. Males of this species can be distinguished by the penis valves which have needle-like projections that are shorter than the hind femur inner apical spur. Males also lack a peripheral vein on the hind wing. Females have a black abdomen with a red girdle.
Larvae feed on grasses.

Size: 10 - 11mm

Status: Common

Distribution: England, Scotland, Wales, Ireland

Flight period: May to July

Plant associations: Gramineae

References:

Benson, R.B., 1952. Handbooks for the Identification of British Insects. Hymenoptera, Symphyta, Vol 6, Section 2(a-c), Royal Entomological Society, London

Haris, A. and Gyurkovics, H. (2014) The genus Tenthredopsis Costa, 1859 in Hungary (Hymenoptera: Symphyta). Natura Somogyiensis, 24 pp. 99-124.

Liston A, Knight G, Sheppard D, Broad G, Livermore L (2014) Checklist of British and Irish Hymenoptera - Sawflies, ‘Symphyta’. Biodiversity Data Journal 2: e1168. https://doi.org/10.3897/BDJ.2.e1168