Differences of opinion exist as to the colouration of males of this species and as to how common they are.
Females have the clypeus and apical tergite marked with white. Edges of the pronotum may also be white marked as may the front coxae. The head is polished and lacks puncturation (punctured in padi and with tubercles on fuerstenbergensis). The occipital carina at the back of the head reaches to the top of the eyes.
Larvae feed on ferns including lady fern, male fern and bracken.
Size: 4 - 6mm
Distribution: England, Scotland, Ireland
Flight period: May to August
Plant associations: Athyrium filix-femina, Dropteris felix-mas and Pteridium aquilinum (lady fern, male fern and bracken)
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
Blank, S.M., 1998. Die mittel - und nordeuropaischen Selandriinae (Hymenoptera:Tenthredinidae).
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