This is a lowland, pale species. In the female, the orbits, the sides of the mesonotal lobes, the scutellum and the mesopleura are largely reddish-yellow and the underside of the abdomen is a greenish-white.
In the male, the abdomen is more or less pale below and the scutellum is loosely punctured and shining between the punctures and laterally.
Larvae are undescribed but probably a willow species.
Size: 6.0 - 8.0mm
Distribution: England, Scotland, Wales, Ireland
Flight period: April to June
Plant associations: Probably Salix spp. (probably 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
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