Dolerus (Poodolerus) varispinus Hartig, 1837

Dolerus varispinus

An entirely black species. In females the sawsheath is broad at the tip with curved setae. The mesonotum is shiny with scattered shallow punctures. In the male, the post-scutellum has a weak median carina and usually with rough transverse striations.

Size: 8-9mm

Status: Widespread, but less common in Ireland

Distribution: England, Scotland, Wales, Ireland

Flight period: April to June

Plant associations: Gramineae (grasses)

References:

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

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