Euura amentorum - Catkin Willow Nematine

A small species. The sawsheath is held upright and when viewed from behind is tridentate at the apex. Predominantly black with yellowish-white on the face below the antennae, the edge of the pronotum, tegulae, legs and more or less the underside of the abdomen. Males are undescribed.

Larvae feed on developing seeds in the female catkins of creeping and goat willows.

Size: 4 - 5mm

Status: Rare

Distribution: England, Scotland

Flight period: April to May

Plant associations: Salix repens and Salix caprea (creeping willow and 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., Vikberg, V., Mutanen, M., Nyman, T. and Prous, M., 2023. Palaearctic willow-catkin sawflies: a revision of the amentorum species group of Euura (Hymenoptera, Tenthredinidae). Zootaxa5323(3), pp.349-395.

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