NON-GROUPED

Euura vaga - Wandering Sedge Nematine

Tenthredo vaga Fabricius, 1781
Pachynematus rugosulus Lindqvist, 1959
Pachynematus vagus (Fabricius, 1781)
Nematus leucogaster Hartig, 1840
Nematus punctipleuris Thomson, 1863
Nematus punctulatus Thomson, 1863
Euura rugosula (Lindqvist, 1959)

North to northern Scotland, seemingly common and widespread (Musgrove, 2024). In life the pale parts are green. Otherwise the species is black with light yellow on the labrum, mandible base, back corners of the Pronotum and tegulae. On the abdomen the lateral faces of the tergite, most of the ninth tergite and the underside are pale. Often a small temporal spot on the head and the upper corner of the eye and the rear orbits are brownish. The base of the coxae are black, the apices of the trochanter are whitish, the tibiae are yellowish, and the apices of the hind tibiae and tarsi are brown.

Euura vaga larval food plants are uncertain but reportedly reared from sedges and willows.

Size: 6.0 - 7.0mm.

GB IUCN status: Least Concern
GB rarity status: None

Distribution: England, Scotland, Wales, Ireland

Flight period: May to August

Plant associations: Uncertain but reportedly reared from Carex spp. and Salix spp. (sedges and willows)

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 Natural England, unpublished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