Euura saliciscinereae - viminalis group (formerly Pontania saliciscinereae)
See Liston et al (2017) for determination of adults. The host plant is an upland species.
Larvae feed on dark-leaved willow. The gall is in contact with the midrib, projecting only below the leaf-blade. The pea shaped gall is at most weakly hairy, usually without warts and green often flushed with red.
Size: Female: 2.8 - 5.4mm, male: 3.0 - 5.3mm
Distribution: England, Scotland
Flight period: Univoltine
Plant associations: Salix myrsinifolia (dark-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