The head and thorax are black with yellow on the mouthparts, the antennae (all flagellar segments in the female and usually most of the ventral surface in the male), a large part of the orbits, the posterior pronotal margin and the tegulae. The abdomen is yellow with black basal tergites and a black streak along the midline that decreases apically. The legs are yellow with black on the bases of the coxae and white on the apex of the coxae and the trochanters.
Larvae feed on eared willows.
Size: 5.5 - 7.0mm.
Distribution: England, Scotland
Flight period: Bivoltine, May to June, July to August
Plant associations: Salix aurita (eared willow).
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