Euura ischnocera - Slenderhorn Leaf-galler
group (formerly Phyllocolpa ischnocera (Thomson, 1863))

The stigma is usually entirely pale, but can be apically darkened. See Liston et al (2017) for determination.

Larvae feed on dark-leaved willow which is an upland species. The larvae cause a leaf fold, either spirally twisted or a marginal fold.

Jump to other group oblita species

Size: Female: 3.4 - 3.9mm, male: 3.2 - 4.2mm

Status: Data deficient

Distribution: Scotland

Flight period: Uni- or bivoltine

Plant associations: Salix myrsinifolia (dark-leaved willow)


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.