Euura nigricantis - Swarthy Leaf-galler
dolichura group (formerly Pontania nigricantis)

See Liston et al (2017) for determination of adults. The host plant is an upland species. Within this group, males of Euura femoralis and Euura nigricantis are inseparable.

Euura nigricantis larvae feed on Dark-leaved Willow causing an elongated gall, often paired, on the upper side of a leaf.

Jump to other group dolichura species

Size: Female: 2.6 - 3.7mm, male: 2.9 - 3.8mm

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