Euura myrsiniticola - viminalis group (formerly Pontania myrsiniticola)
See Liston et al (2017) for determination of adults. The host plant is an upland species.
Larvae feed on whortle-leaved willow. The gall is in contact with the midrib, projecting above and below the leaf-blade. The pea or bean shaped gall is usually about two-thirds on the underside of the leaf.
Size: Female: 2.4 - 4.6mm, male: 3.0 - 3.3mm
Flight period: Univoltine
Plant associations: Salix myrsinites (whortle-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