Euura leucolena - White-bordered Willow Nematine

A mainly black species with pale on the mouth parts, the clypeus, the temples, to some extent the orbits, the tegulae, the edges of the pronotum, the legs and the apex and underside of the abdomen. Males have the tegulae and the femora more or less infuscated. Determination should be confirmed by reference to the genitalia in both genders.

Euura leucolena larvae feed on grey willow, eared willow and creeping willow.

Size: Female: 5.5 - 6.5mm, male: 4.5 - 5.5mm.

Status: Locally common

Distribution: England, Ireland

Flight period: March to May

Plant associations: Salix atrocinerea, Salix aurita and Salix repens. (grey willow, eared willow and creeping 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