Euura fagi - Beech Nematine

A reddish yellow species. The female is marked with black over the antennal bases, an ocellar spot which often extends over the postocellar area, a spot behind the postocellar area, two or three longitudinal stripes on the mesonotum, spots on the anterior of the scutellum and the posterior of the scutellum. The scutellar appendage and the postscutellum are also darkened and there are wide bands on the basal tergites of the abdomen. The male has black on a large mark on the anterior of the postocellar area, the occipital area, the top of the thorax, the mesosternum, and a broad streak on the abdomen. The hind tibia is brown and the tarsi are blackish.

Euura fagi larvae are solitary edge feeders on beech.

Size: Female: 6.0 - 7.0mm.

Status: Widespread

Distribution: England, Scotland, Wales

Flight period: May to June, July to August

Plant associations: Fagus sylvatica (beech).


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