EUURA BERGMANNI GROUP

Euura brevivalvis - Shortsaw Birch Nematine

Nematus brevicornis Förster, 1854
Eupontania brevicornis (Förster, 1854)
Nematus congruens Förster, 1854

North to northern Scotland. Although some past identifications may not be entirely reliable (e.g. Benson (1958) doesn't include a figure showing the penis-valve for this species), the overall pattern is probably reasonably reliable (Musgrove, 2024).

The female is yellow-brown marked with black on the ocelli, the postocellar area, two or three longitudinal marks on the mesonotum, the metanotum, the metascutellum, more or less the midline of the abdomen, and the hind tibia. The male has a pale mesosternum and the pale parts of the face are yellowish-white.

Euura brevivalvis larvae feed on birches.

Jump to other Euura bergmanni group species

Size: Female: 8.0 - 9.0mm.

GB IUCN status: Least Concern
GB rarity status: None

Distribution: England, Scotland, Wales, Ireland

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)

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.

Musgrove, A.J. 2024. A review of the status of sawflies of Great Britain - Phase 3: The Tenthredinidae (subfamily Nematinae). Natural England, unpublished

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