Euura pustulator - viminalis group (formerly Pontania pustulator)
See Liston et al (2017) for determination of adults. The host plant is an upland species.
Euura pustulator larvae feed on tea-leaved willow. The gall is in contact with the midrib, projecting equally above and below the leaf-blade. The gall is glabrous and smooth with a single gall per leaf.
Size: Female: 3.0 - 6.1mm, male: 4.0 - 6.6mm
Distribution: England, Scotland
Flight period: Univoltine
Plant associations: Salix phylicifolia (tea-leaved willow)
The National Biodiversity Network records are shown on the map below. (See terms and conditions)
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