The identity of Scottish specimens requires further study as they are not a good match for specimens identified as this species in Switzerland (the location of the type specimen).
This species is similar to the circum-polar species Euura variator (not in Britain). Males and females occur in equal number. The colour is dark with yellowish to off-white on the labrum, clypeus, madible bases, genae, around the eye orbits and the pronotal angles. On the legs the bases of the coxae, trochanters, apices of the femora, more or less the tibiae and the bases of the tarsi are also pale. On the abdomen, the lateral faces, sternites and the apical tergite are similarly pale. Males have longer antennae than the females but are similarly coloured and can be determined by the shape of the penis valves.
Larvae thought to feed on creeping willow.
Size: Female: 6.0 - 8.5mm, male: 5.5 - 7.5mm
Flight period: May to June
Plant associations: Probably Salix repens (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. https://doi.org/10.3897/BDJ.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