EUURA AMERINAE GROUP

Euura atra - Dark Shoot-galler
amerinae group

Pteronus ater Jurine, 1807
Euura angusta (Hartig, 1837)
Nematus angustus Hartig, 1837

North to northern Scotland, very common and widespread. Possibly somewhat over-recorded in the past as Benson (1958) noted that 'possibly more than one species is involved here', and gave the foodplant as 'various species of Salix' (Musgrove, 2024).

See Liston et al (2017) for determination of adults. The host plants are widespread species.

Euura atra larvae feed on leaves of white and crack willow and hybrids of the two. This species tunnels along a shoot not usually causing galls though the shoot may be weakly thickened.

Jump to other group amerinae species

Size: Female: 3.5 - 5.3mm, male: approx. 2.9 - 4.9mm

GB IUCN Status: Least Concern
GB Rarity Status: None

Distribution: England, Scotland, Wales, Ireland

Flight period: Univoltine

Plant associations: Salix alba, Salix fragilis and rarely Salix viminalis (white and crack willow, hybrids of the two and rarely on osier)

The National Biodiversity Network records are shown on the map below. (See terms and conditions)

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

Musgrove, A.J. 2024. A review of the status of sawflies of Great Britain - Phase 3: The Tenthredinidae (subfamily Nematinae). Natural England, unpublished