One of three small species formerly included in the Rhogogaster picta group. All three have bicolorous blue-green/black stigma. This species is likely parthenogenic without any males or males undistinguishable from other species. The hind tibia are marked with black at the base and apex. Facial markings and saw teeth are diagnostic (see Benson).
Larvae feed on broom.
Size: 6 - 8.5mm
Status: Less common than the other species in this genus
Distribution: England, Wales
Flight period: May to July
Plant associations: Cytisus scoparius (broom)
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