Entirely black with a bronzy sheen. Mesonotum very shiny with widely spaced punctures. Slim and elongate. Cerci may be brick-red. Identification requires examination of genitalia.
Larvae feed on grasses.
Status: Common and widespread
Distribution: England, Scotland, Wales, Ireland
Flight period: April to July, also sometimes August to September
Plant associations: Gramineae (grasses)
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