A genus of slender, elongate sawflies. Ametastegia albipes has an entirely black abdomen and reddish-yellow hind femurs. The tegulae and usually the hind margin of the pronotum are white. The legs are yellow for the most part but the trochanters and coxae are marked with white and the dark of the hind tarsi continues onto the apex of the hind femur.
Larvae are thought to feed on aspen and docks.
Size: 5 - 6mm
Distribution: England, Wales, Ireland
Flight period: bi- or multivoltine, May to June, August
Plant associations: Possibly Populus tremula (aspen) and Rumex spp. (docks)
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