Trichiosoma vitellina (Linnaeus, 1760)

Trichiosoma vitellina

Rarely encountered in Britain and Ireland. The female is black on the tergites above but reddish-brown laterally and beneath. The scutellum is densely clothed in pale hairs. The two apical tergites are densely clothed with silky, adpressed pubescence. Males abdomen is coloured as per the female and the scutellum is similarly clothed.

Larvae feed on willows.


Size: 13 - 24mm

Status: Rare

Distribution: England, Scotland, Wales, Ireland

Flight period: May to June

Plant associations: Salix spp. (willows)


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.