Euura oligospila
The species is usually green in life turning to light yellow when dead but can be yellow when alive also. Euura oligospila is best determined by examination of the saw or penis valves (see Prous et al, 2021). The female has the dorsal surface of tergites one to eight either completely pale or with a narrow black medial stripe, whereas in Euura frenalis the dorsum is usually completely black. The malar gap is less than 1.5 times the width of the front ocellus. The hind tibiae and tarsi are more or less darkened.
The male has the pronotum extensively pale. The stigma is also more or less uniformly pale.
Euura oligospila larvae feed on willows.
Size: Female: 4.5 - 6.5, male: 4.5 - 6.0mm.
Status: Widespread
Distribution: England, Scotland, Wales, Ireland
Flight period: May to June, July to August
Plant associations: Salix spp. (willows)
The National Biodiversity Network records are shown on the map below. (See terms and conditions)
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- Euura oligospilus larva Credit John Grearson
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, 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
Muche, W.H., 1974. Die Nematinengattungen Pristiphora Latreille, Pachynematus Konow und Nematus Panzer (Hym., Temthredinidae). Deutsche Entomologische Zeitschrift, 21(1/3), pp.1-137.
Prous, M., Liston, A., Kramp, K., Savina, H., Vårdal, H. and Taeger, A., 2019. The West Palaearctic genera of Nematinae (Hymenoptera, Tenthredinidae). ZooKeys, 875, p.63-127
Prous, M., Liston, A., Mutanen, M. 2021. Revision of the West Palaearctic Euura bergmanni and oligospila groups (Hymenoptera, Tenthredinidae. Journal of Hymenoptera Research. http://zoobank.org/1459B177-AF2B-4D39-9483-E8BA21E70E67