EURA GROUP MILIARIS

Euura fagi - Beech Nematine

Nematus fagi Zaddach, 1876
Nematus fagi Zaddach, 1883

North to southern Scotland, not especially common but still recorded fairly frequently (Musgrove, 2024).

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.

GB IUCN status: Least Concern
GB rarity status: None

Distribution: England, Scotland, Wales

Flight period: May to June, July to August

Plant associations: Fagus sylvatica (beech).

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 Natural England, unpublished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