Overall a black sawfly with pale legs. The front lobe of the mesonotum, the scutellum, the stigma, the mesopleura and most of the abdomen are black. The abdomen has some degree of brown from the middle to the apex.
Larvae have not been observed in Britain but are known to feed on lady fern in Finland.
Size: 4 - 5.5mm
Distribution: England, Scotland
Flight period: May to June
Plant associations: Filices incl. Athyrium filix-femina (ferns incl. lady fern)
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
Vikberg, V., 2010. Pseudohemitaxonus sharpi (Cameron)(Hymenoptera: Symphyta: Tenthredinidae) in Finland. Sahlbergia vol.16.1, 11-16