Arge enodis is one of the black species. The apex of the wing (beyond the stigma) is clear, contrasting with a deeply infuscate base. Vein 3rm in the forewing is straight distinguishing this species from the similar Arge nigripes.
Larvae feed gregariously on willows. Eggs are lain into fully developed leaves between the serrations along the leaf margin. The larvae feed from the leaf margins to the midrib. At maturity they drop to the ground and construct a cocoon just below the soil surface.
Flight period: May to June. (NB. Multivoltine on the continent.)
Plant associations: Salix spp. (willows)
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
Fenili, G. A. 1981: Contributi alla conoscenza degli Hymenoptera Symphyta. Arge enodis (Linneo) (Tenthredinoidea, Argidae, Arginae). - Redia. Giornale di Entomologia, Firenze 64: 13-52; Tav. I
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