Strongylogaster mixta

The abdomen usually has tergites 2 to 5 banded reddish-yellow. The clypeus and labrum are black as are all the femora except at the extreme apex. The mesopleura are shiny and scarcely punctured.

Strongylogaster mixta larvae feed on lady fern and possibly other ferns. Late instar larvae are recognisable by the greenish grey ground colour on the upper surface and the presence of a black spot on the suranal lobe.

Jump to other Strongylogaster species

Size: 7 - 9mm

Status: Local

Distribution: England, Scotland, Wales, Ireland

Flight period: April to June

Plant associations: Athyrium filix-femina (lady fern)


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.

Macek, J., 2010. Taxonomy, distribution and biology of selected European Dinax, Strongylogaster and Taxonus species (Hymenoptera: Symphyta). Acta Entomologica Musei Natioalis Pragae, 50(1).