Dolerus (Equidolerus) pratensis (Linnaeus, 1758)

Dolerus pratensis

Both sexes: Very variable in colour. Normally red-belted but if the abdomen is entirely black then so are the legs. Best determined by genitalia.
Larvae feed on wet habitat horsetails.

 

Status: Local but often abundant

Distribution: England, Scotland, Wales, Ireland

Flight period: May to June

Plant associations: Equisetum sp. (horsetails - wet habitat species)

References:

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