Separated from the similar Arge enodis by having a curved vein 3rm in the fore wing and a fore wing that is scarcely clearer at the apex than at the base. In Arge enodis vein 3rm is straight and the fore wing is noticably darker at the base than the apex.
Larvae feed on roses.
Distribution: England, Scotland, Wales
Flight period: April to July
Plant associations: Rosa spp. (roses)
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