Euura dorsata
Only known from Britain, Muche suggests that this species might be a form of "vividus Stephens" which would appear to be a misspelling of Euura viridus. The depressed parts of the metanotum, the metascutum and at most the basal three tergites marked with black.
Euura dorsata larvae feed on birches.
Size: Female: 7.5 - 8.0mm.
Status: Rare
Distribution: Scotland, Wales
Flight period: May to June
Plant associations: Betula spp. (birches).
The National Biodiversity Network records are shown on the map below. (See terms and conditions)
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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