Description follows Liston et al, 2017. This group forms willow leaf-roll galls. In Britain the hostplants include the Tea-leaved Willow with its northern and upland distribution and the widespread Goat Willow and Purple Willow. The species are in general univoltine, but Euura purpurea can be bivoltine in some years. The characteristics of the group are as follows. The mandibles are asymmetric with the right one being evenly tapered and the left narrowing rapidly from the base to a narrow blade-like apex. The cross vein 2r-m is usually present on the forewing submarginal cells. The supraclypeal region is densely haired and the antennae are moderately long. The dorsum of the head has tubercles to some extent. The penis valve of the males lacks any small spines ventrally. The female has comparatively short cerci that are at most four times the breadth.
Euura anomaloptera (Förster, 1854) = Pontania anomaloptera (Förster, 1854)
Euura purpureae (Cameron, 1884) = Pontania purpureae (Cameron, 1884)
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
Liston, A.D., Heibo, E., Prous, M., Vårdal, H., Nyman, T. and Vikberg, V., 2017. North European gall-inducing Euura sawflies (Hymenoptera, Tenthredinidae, Nematinae). Zootaxa, 4302(1), pp.1-115.