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.
Size: 15 - 22mm
GB IUCN Status: Data Deficient
GB Rarity Status: Unclear
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. https://doi.org/10.3897/BDJ.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 Natural England, unpublished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