Both sexes: A large species with a variable amount of red colour. Normally red-belted but if the abdomen is entirely black then so are the legs. Best determined by genitalia.
Dolerus pratensis larvae feed on wet habitat horsetails.
Size: 10 - 13mm
Status: Local but often abundant
Distribution: England, Scotland, Wales, Ireland
Flight period: May to June
Plant associations: Equisetum sp. (horsetails - wet habitat species)
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