An early spring species. Head, body and legs are black with a blue-green tinge. Dark hairs make this species appear darker than other Dolerus species in the field.
In the female, the front lobe of mesonotum has a fine median keel with punctures along the midline. The mesosternum is densely punctured. Wings may not reach the tip of the abdomen.
In males the hairs on the head and thorax are black and the penis valve is diagnostic.
Dolerus anthracinus larvae feed on grasses. In the South East, the species is mainly on chalk grassland.
Status: Locally common
Distribution: England, Scotland, Wales
Flight period: February to April
Plant associations: Graminaceae (grasses)
Benson, R.B., 1952. Handbooks for the Identification of British Insects. Hymenoptera, Symphyta, Vol 6, Section 2(a-c), Royal Entomological Society, London
Harwood, P. 1945: Early appearance of Dolerus anthracinus Klug (Hym., Symphyta). - The Entomologist's Monthly Magazine, Fourth Series, London 81(6): 119
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