Euura brevicornis (Förster, 1854)

Euura brevicornis - viminalis group (formerly Pontania brevicornis)

See Liston et al (2017) for determination of adults.

Larvae feed on common sallow, and its hybrid with goat willow, and rarely on eared willow. The gall is in contact with the midrib, projecting only below the leaf-blade. The gall is pea shaped, noticeably hairy and yellow-green.

 

Size: Female: 3.2 - 4.6mm, male: 2.8 - 4.8mm

Status: Rare

Distribution: England, Scotland

Flight period: Univoltine

Plant associations: Salix cinerea, Salix cinerea x caprea and rarely on Salix aurita (common sallow and its hybrid with goat willow and rarely on eared willow)

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