Trichiosoma scalesii - Scales' Hairy-clubhorn

Trichiosoma scalesii was initially recognised by Leach but Benson considered it as a synonym of latreillei and suggested this maybe a northern counterpart to lucorum. Quinlan & Gauld (1981) include both scalesii and latreillei within lucorum. Viitasaari (1990) recognised scalesii although was less clear about what latreillei represented (Musgrove, 2022). The female abdomen is black above and reddish-brown at the sides and underneath. Only weakly hairy from the third tergite to the apical segments.

Trichiosoma scalesii larvae feed on willows.

Jump to other Cimbicidae

Size: 15 - 22mm

GB IUCN Status: Data Deficient
GB Rarity Status: Unclear

Distribution: England

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.

Musgrove, A.J. 2022. A review of the status of sawflies of Great Britain - Phase 1: families other than Tenthredinidae. Natural England, unpublished

Viitasaari, M. 1989: Taxonomic notes on the genus Trichiosoma Leach (Hymenoptera, Cimbicidae) II. - Annales Entomologici Fennici, Helsinki 55 (3): 111-129