EURA AMERINAE GROUP

Euura venusta - Sallow Petiole-galler

Cryptocampus venustus Brischke, 1883

North to northern Scotland (Musgrove, 2024). See Liston et al (2017) for determination of adults. The host plants are mostly widespread species. Within this group, males of Euura mucronata, Euura testaceipes and Euura venusta are inseparable.

Euura venusta larvae feed on leaves of Eared Willow, Goat Willow, Downy Willow and Grey Willows causing a spindle shaped swelling in the leaf petiole. Usually one gall per leaf.

Jump to other group amerinae species

Size: Female: 3.3 - 5.0mm, male: approx. 3.4 - 4.0mm

GB IUCN status: Least Concern
GB rarity status: None

Distribution: England, Scotland, Wales

Flight period: Univoltine

Plant associations: Salix aurita, Salix caprea, Salix lapponum, Salix cinerea and Salix atrocinerea (eared willow, goat willow, downy willow and grey willows)

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 Natural England, unpublished