In the female the abdomen is usually mostly black above as are the front and middle lobes of the mesonotum. The mesopleura and hind orbits are usually pale. The cerci are very short, projecting less than half way to the tip of the sawsheath when viewed from above. In the male the apical two tergites are mainly pale, as are the mesopleura, and on the face the pale parts are yellow.
Larvae are feed on willows and poplars.
Size: Female: 5.0 - 6.0mm, male: 5.0 - 5.5mm.
Distribution: England, Scotland, Wales, Ireland
Flight period: May to June, July to August
Plant associations: Salix spp. and Populus spp. (willows and poplars).
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