NON-GROUPED

Euura salicis - Willow Nematine

Tenthredo salicis Linnaeus, 1758
Nematus salicis (Linnaeus, 1758)
Tenthredo capreae Linnaeus, 1758
Nematus nassatus Gimmerthal, 1836
Nematus inflatus Thomson, 1871

North to northern Scotland, moderately frequent (Musgrove, 2024). 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.

GB IUCN status: Least Concern
GB rarity status: None

Distribution: England, Scotland, Wales

Flight period: May to June, July to September

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

The National Biodiversity Network records are shown on the map below. (See terms and conditions)

References:

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.

Musgrove, A.J. 2024. A review of the status of sawflies of Great Britain - Phase 3: The Tenthredinidae (subfamily Nematinae). Natural England, unpublished

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