The female differs from sorbi in having the pubescence on the apical two segments not closely adpressed and the hind tibia is usually darker than the tarsi. The male abdomen is entirely black above and below.
Trichiosoma tibiale larvae feed on hawthorns and sometimes willows.
Size: 13 - 24mm
Distribution: England, Scotland, Wales, Ireland
Flight period: May to June
Plant associations: Crataegus spp. and sometimes Salix spp. (hawthorns and sometimes willows)
The National Biodiversity Network records are shown on the map below. (See terms and conditions)
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
Viitasaari, M. 1989: Taxonomic notes on the genus Trichiosoma Leach (Hymenoptera, Cimbicidae) II. - Annales Entomologici Fennici, Helsinki 55 (3): 111-129