Wings slightly infuscated. Paired pale patches on tergites 2 to 4 (or 5 in the male). Claws with a strong inner tooth. Antennae longer than the abdomen in the male and as long as the abdomen in the female.
Larvae feed on water avens.
Size: Approx. 6 - 7.5mm
Distribution: England, Scotland, Wales, Ireland
Flight period: May to June
Plant associations: Geum rivale (water avens)
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