The thorax is black and the abdomen almost so, but the pronotal margin and tegulae are yellow. The hind tibia are yellow. The head with the supra-antennal grooves faint or absent. Tarsal claws are bifid with the inner and outer tooth well apart.
Larvae have branched spines and feed on brambles, etc.
Size: 6 - 8mm
Distribution: England, Scotland, Wales
Flight period: May to June
Plant associations: Rubus spp.(brambles, etc.)
The National Biodiversity Network records are shown on the map below. (See terms and conditions)
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