Allantus truncatus has a black abdomen that is banded with off-white across tergite five in the female. The legs are reddish to yellow. The clypeus and scutellum are dull with a rugged surface. The stigma is uniformly deep brown.
Larvae feed on roses, tormentil and great burnet.
Size: 8 - 9mm
Distribution: England, Scotland, Wales
Flight period: May to August
Plant associations: Rosa spp., Potentilla erecta and Sanguisorba officinalis (roses, tormentil and great burnet)
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