Strongylogaster multifasciata (Geoffroy, 1785)

Strongylogaster multifasciata

A black and tan species and the commonest in this genus. Males are rare. In the female the thorax is black, the abdomen orange-brown with yellow apices to the tergites and with tricoloured legs (black, white and orange). In the male the abdomen is more or less orange as are the legs.
Larvae feed on ferns.

Size: Approx. 9 - 11mm

Status: Common

Distribution: England, Scotland, Wales, Ireland

Flight period: May to September

Plant associations: Pteridium aquilinum (bracken) and Dryopteris filix-mas (male 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).