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 lined with black on the anterio-dorsal face. Facial markings and saw teeth are diagnostic (see Benson).
Larvae feed on broom and dyer's greenweed.
Size: 6 - 8.5mm
Distribution: England, Scotland, Wales
Flight period: May to July
Plant associations: Cytisus scoparius (broom), Genista tinctoria (dyer's greenweed)
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