Euura longiserra - Long-sawed Willow Nematine

A reddish-brown species with black antennae and more or less marked black on the basal tergites of the abdomen and on the lateral lobes of the mesonotum. The female has an ovipositor that is longer than the hind tibia. The male is orange on the underside of the thorax with a black band along the sternopleural line. Determination should be confirmed by reference to the genitalia in both genders.

Euura longiserra larvae feed on Eared Willow and Goat Willow.

Size: Female: 7.0 - 8.0mm, male: 6.0 - 7.0mm.

Status: Local

Distribution: England, Scotland, Wales

Flight period: April

Plant associations: Salix aurita (Eared Willow), Salix caprea (Goat 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.

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