Recorded locally north to Yorkshire, with isolated records further north through Scotland; most frequent in chalk downland habitats in southern England (Musgrove, 2023).
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
GB IUCN Status: Least Concern
GB Rarity Status: None
Distribution: England, Scotland, Wales
Flight period: May to August
Plant associations: Rosa spp., Potentilla erecta and Sanguisorba officinalis (roses, tormentil and great burnet)
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
Musgrove, A.J. 2023. A review of the status of sawflies of Great Britain - Phase 2: The Athaliidae and the Tenthredinidae (excluding Nematinae). Natural England, unpublished