This species was added to the British list by Benson in 1968. The species is almost entirely black except for the labrum, the tegulae, the edge of the pronotum and the extreme apex of the abdomen. The hind femur is pale yellow but infuscated from the base to some degree.
Larval food plants are not known but has been found in areas of alluvial grassland with mat-grass, sheep's fescue, common bent and heath rush.
Size: 4.5 - 5.5mm.
Flight period: May to August
Plant associations: Unknown but has been found in areas of Nardus stricta, Festuca ovina, Agrostis capillaris and Juncus squarrosus (mat-grass, sheep's fescue, common bent and heath rush).
The National Biodiversity Network records are shown on the map below. (See terms and conditions)
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
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