Euura oblita (Serville, 1823)

Euura oblita - oblita group (formerly Phyllocolpa oblita (Serville, 1823) and Pontania puella (C.G.Thomson, 1871))

The species shows some variability in colour resembling species of the ischnocera group but generally paler. See Liston et al (2017) for determination.

Larvae feed on white willow, crack willow and almond willow. The larvae cause a leaf fold, either spirally twisted or a marginal fold.

 

Size: Female: 4.0 - 5.8mm, male: 4.0 - 4.8mm

Status: Local

Distribution: England, Wales

Flight period: Uni- or bivoltine, June to July

Plant associations: Salix alba, Salix fragilis and Salix triandra (white willow, crack willow and almond willow )

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