Euura arbusculae (Benson, 1941)

Euura arbusculae - viminalis group (formerly Pontania arbusculae)

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

Larvae feed on mountain willow causing pea-shaped galls. However, a further, as yet unidentified species, within the viminalis group may cause galls on this willow and galls cannot be attributes solely to Euura arbusculae.

Size: Female: 3.4 - 3.7mm, male: 3.9 - 4.9mm

Status: Rare

Distribution: Scotland

Flight period: Univoltine

Plant associations: Salix herbacea (dwarf 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.