Euura leucosticta - oblita group (formerly Phyllocolpa erythropyga (Förster, 1854) andPhyllocolpa leucosticta (Hartig, 1837))
The species shows some variability in colour. See Liston et al (2017) for determination.
Larvae feed on grey willow, eared willow and goat willow. The larvae cause a leaf fold, either spirally twisted or a marginal fold.
Size: Female: 3.8 - 5.5mm, male: 3.8 - 4.6mm
Status: Widespread
Distribution: England, Scotland, Wales, Ireland
Flight period: Uni- or bivoltine, May to August
Plant associations: Salix cinerea, Salix aurita and Salix caprea (grey willow, eared willow and goat willow )
The National Biodiversity Network records are shown on the map below. (See terms and conditions)
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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