Euura atra (Jurine, 1807)

Euura atra - amerinae group

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

Euura atra larvae feed on leaves of white and crack willow and hybrids of the two. This species tunnels along a shoot not usually causing galls though the shoot may be weakly thickened.

Size: Female: 3.5 - 5.3mm, male: approx. 2.9 - 4.9mm

Status: Widespread

Distribution: England, Scotland, Wales, Ireland

Flight period: Univoltine

Plant associations: Salix alba, Salix fragilis and rarely Salix viminalis (white and crack willow, hybrids of the two and rarely on osier)

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