Euura saliciscinereae (Retzius, 1783)

Euura saliciscinereae - viminalis group (formerly Pontania saliciscinereae)

See Liston et al (2017) for determination of adults. The host plant is an upland species.

Euura saliciscinereae larvae feed on dark-leaved willow. The gall is in contact with the midrib, projecting only below the leaf-blade. The pea shaped gall is at most weakly hairy, usually without warts and green often flushed with red.

Size: Female: 2.8 - 5.4mm, male: 3.0 - 5.3mm

Status: Rare

Distribution: England, Scotland

Flight period: Univoltine

Plant associations: Salix myrsinifolia (dark-leaved 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