Trichiosoma laterale Leach, 1817

Trichiosoma laterale

Rarely found in Britain and Ireland. Occurs sporadically in Scandinavia. Very similar to the commoner Trichiosoma lucorum and vitellina. Trichiosoma laterale may be overlooked by confusion with the other two. T.laterale is mainly black but more or less reddish-brown laterally. On the apical tergites, the silky, adpressed pubescence does not obscure the underlying puncturation.

Larvae feed on birch and willow.


Size: 13 - 24mm

Status: Rare

Distribution: England, Scotland, Ireland

Flight period: May to July

Plant associations: Betula spp. and Salix spp. (birches and 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.