The head, mesonotum and some of the abdomen is brownish to reddish-yellow. In the female, the scutellum lacks a black band across the posterior margin and the abdomen is at most marked with black along the midline of the basal three tergites. The mesonotum is dulled by fine surface sculpture. The antennae is entirely black except for the underside of the apical segments. Male undescribed.
Larvae feed on aspen. Probably more widespread than recorded in aspen thickets.
Size: Female: 6.0 - 7.0mm.
Distribution: England, Scotland
Flight period: May to June
Plant associations: Populus tremula (aspen).
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