Euura leucapsis - oblita group (formerly Phyllocolpa leucapsis and conspecific Phyllocolpa alienata)
Phyllocolpa leucapsis, alienata and Pontania coriacea are all now considered to be one species. The species shows some variability in colour. See Liston et al (2017) for determination.
Euura leucapsis larvae feed on grey willow, eared willow and atypically on downy willow. The larvae cause a leaf fold, either spirally twisted or a marginal fold.
Size: Female: 3.1 - 4.1mm, male: 3.3 - 3.8mm
Distribution: England, Scotland, Wales, Ireland
Flight period: Uni- or bivoltine, May to August
Plant associations: Salix cinerea, Salix aurita and atypically on Salix lapponum (grey willow, eared willow and atypically on downy 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