Euura venusta (Brischke, 1883)

Euura venusta - amerinae group

See Liston et al (2017) for determination of adults. The host plants are mostly widespread species.

Euura venusta larvae feed on leaves of eared willow, goat willow, downy willow and grey willows causing a spindle shaped swelling in the leaf petiole. Usually one gall per leaf.

Size: Female: 3.3 - 5.0mm, male: approx. 3.4 - 4.0mm

Status: Local

Distribution: England, Scotland, Wales

Flight period: Univoltine

Plant associations: Salix aurita, Salix caprea, Salix lapponum, Salix cinerea and Salix atrocinerea (eared willow, goat willow, downy willow and grey willows)

References:

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.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.

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