Trichiosoma lucorum (Linnaeus, 1758)

Trichiosoma lucorum

Reasonably common in Britain and Ireland. Males cannot be reliably distinguished from Trichiosoma laterale at present. The female is black on the abdomen and lacks any reddish-brown laterally or beneath. On the apical tergites, the silky, adpressed pubescence does not obscure the underlying puncturation.

Larvae feed on birch.


Size: 13 - 24mm

Status: Widespread

Distribution: England, Scotland, Wales, Ireland

Flight period: May to June

Plant associations: Betula spp. (birches)


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.