Green in life but a very variable species. In the female the postocellar area, the scutellum, the mesosternum and more or less top of the abdomen are often marked with black. In the male there is a spot on the front and back of the head and the thorax, and the top of the abdomen are marked with black. The clypeus, orbits, rear corners of the pronotum, tegulae, and more or less the coxae and trochanters are whitish. Underside of the abdomen and legs are light brown. The antennae are light brown and darker dorsally.
Larval feed on willows.
Size: Female: 5.0 - 6.5mm, male: 4.5 - 5.0mm.
Distribution: England, Scotland, Ireland
Flight period: May to June
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
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
Muche, W.H., 1974. Die Nematinengattungen Pristiphora Latreille, Pachynematus Konow und Nematus Panzer (Hym., Temthredinidae). Deutsche Entomologische Zeitschrift, 21(1/3), pp.1-137.
Prous, M., Liston, A., Kramp, K., Savina, H., Vårdal, H. and Taeger, A., 2019. The West Palaearctic genera of Nematinae (Hymenoptera, Tenthredinidae). ZooKeys, 875, p.63-127