A largely green species which can be distinguished from the similar Pachyprotasis antennata by the green stigma (black in antennata). Known from a single specimen in Wales in 1941.
Larvae feed on a variety of herbaceous plants.
Size: 7 - 9mm
Status: Very rare
Flight period: June
Plant associations: Mentha aquatica, Alchemilla spp., Geum spp. and Plantago spp. (water mint, lady's mantle, avens and plantains)
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