A genus of slender, elongate sawflies. Ametastegia tenera has an entirely black abdomen and black hind legs. The tegulae are black. The scutellum is more or less punctured in the middle.
Larvae feed on docks and prepupate inside stems and soft wood.
Size: 6 - 8mm
Distribution: England, Scotland, Wales, Ireland
Flight period: bi- or multivoltine, April to August
Plant associations: Rumex spp. (docks)
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