Stromboceros delicatulus (Fallén, 1808)

Stromboceros delicatulus

The only species of this genus to be represented here. The long, slender insect is predominantly light green to pale yellow with a black head, black patches on the mesonotum and a distinct black patch covering the mesosternum. Colour fades to straw in death. The abdomen may also be marked with black in part.
Larvae feed on ferns in woodland.

Size: 5.5 to 7mm

Status: Widespread and common

Distribution: England, Scotland, Wales, Ireland

Flight period: May to September

Plant associations: Pteridium spp., Dryopteris spp., Onoclea spp., and Polypodium spp. (ferns)


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.