Euura salicis - Willow Nematine

In the female the the head and mesonotum are mainly black and the abdomen is orange-yellow with some infuscation basally. The scutellum is mostly black but may be narrowly margined with yellow. In the male the mesopleura, the lower part of the face and the underside of the antennae are yellow and the abdomen is yellow with at most the basal two tergites marked with black. The stigma is black.

Euura salicis larvae feed on white willow and crack willow.

Size: Female: 8.0 - 10.0mm, male: 6.5 - 10.0mm.

Status: Locally common

Distribution: England, Scotland, Wales

Flight period: May to June, July to September

Plant associations: Salix alba and Salix fragilis (white willow and crack willow)


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.

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