Euura testaceipes - amerinae group
See Liston et al (2017) for determination of adults. The main host plants are widespread species. Within this group, males of Euura mucronata, Euura testaceipes and Euura venusta are inseparable.
Euura testaceipes larvae feed on leaves of white willow, crack willow (or hybrids thereof) and almond willow causing a spindle shaped swelling in the midrib or leaf petiole. Sometimes more than one gall per leaf.
Jump to other group amerinae species
Size: Female: 3.8 - 4.7mm, male: approx. 3.2mm
Status: Rare
Distribution: England, Scotland
Flight period: Univoltine
Plant associations: Salix alba, Salix fragilis and Salix triandra (white willow, crack willow and almond willow)
The National Biodiversity Network records are shown on the map below. (See terms and conditions)
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- Euura mucronata/testaceipes/venusta agg. male Credit Andrew Green
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- Euura mucronata/testaceipes/venusta agg. male Credit Andrew Green
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- Euura mucronata/testaceipes/venusta agg. penis valve Credit Andrew Green
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