Euura viminalis- viminalis group (formerly Pontania viminalis)
See Liston et al (2017) for determination of adults. The host plant is widespread. Within this group, males of Euura aquilonis, crassipes, collectanea, myrsiniticola, pedunculi, saliciscinereae, samolad, viminalis, herbaceae and arbusculae are inseparable.
Euura viminalis larvae feed on Purple Willow. The gall is in contact with the midrib, projecting only below the leaf-blade. The pea shaped gall is glabrous, often very warty and green blushed with red.
Jump to other group viminalis species
Size: Female: 2.9 - 5.4mm, male: 2.8 - 4.7mm
Status: Widespread
Distribution: England, Scotland, Wales, Ireland
Flight period: Bivoltine
Plant associations: Salix purpurea (Purple Willow)
The National Biodiversity Network records are shown on the map below. (See terms and conditions)
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- Euura viminalis Credit Alan Outen
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- Euura viminalis Credit Alan Outen
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