A glossy black species with contrasting bright yellow legs and tegulae. Males are rarely encountered in Britain and Ireland . In the female, the pronotum and abdomen are entirely black. The abdomen is glossy with minimal microsculpture. The carina behind the genae runs at the sides of the head up to the level of the top of the eye. In the similar Aneugmenus temporalis, the carina only goes half way up the eye.
Larvae feed on ferns, especially bracken.
Size: 5 - 6mm
Distribution: England, Scotland, Wales, Ireland
Flight period: May to September
Plant associations: Pteridium aquilinum (bracken) and other ferns.
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