Except for the first tergite, subsequent tergites are shiny without sculpture. Legs are entirely black. From above the thorax is predominately orange except for the front of the middle lobe and the side lobes. The whole abdomen is also orange. 9.5-10.5mm.
Larvae feed on rushes.
Distribution: England, Wales
Flight period: May to June
Plant associations: Juncus sp. (rushes)
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