Euura dorsata - Blackback Birch Nematine

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).


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.

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