Dolerus (Poodolerus) nitens Zaddach, 1859

Dolerus nitens

A large, black species with metallic reflections. In female, the mesopleura have pale hairs longer than the width of the basitarsus. Mesosternum mainly unpunctured. In the male, the lateral lobes of the mesonotum are highly polished with at most a few weak punctures. Males best determined by the penis valve.

Size: 8.5-10mm

Status: Rare but widely distributed

Distribution: England, Scotland, Wales, Ireland

Flight period: March to April

Plant associations: Gramineae or Cyperaceae (grasses or sedges)

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