Trichiosoma vitellina - Amber Hairy-clubhorn
Benson (1951), and later Quinlan and Gauld (1981), listed vitellinae as a Salix feeder but synonymised laterale. Hence most records of vitellina from the 1950s onwards cannot be assumed to exclude the currently recognised laterale (Musgrove, 2022). The female is black on the tergites above but reddish-brown laterally and beneath. The scutellum is densely clothed in pale hairs. The two apical tergites are densely clothed with silky, adpressed pubescence. Males abdomen is coloured as per the female and the scutellum is similarly clothed.
Trichiosoma vitellina larvae feed on willows.
Size: 13 - 24mm
GB IUCN Status: Data Deficient
GB Rarity Status: Unclear
Distribution: England, Scotland, Wales, Ireland
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 Natural England, unpublished
Quinlan, J. & Gauld, I. D. 1981. Handbooks for the Identification of British Insects. Hymenoptera, Symphyta, Vol 6, Section 2(a) New Edition, Royal Entomological Society, London
Viitasaari, M. 1989: Taxonomic notes on the genus Trichiosoma Leach (Hymenoptera, Cimbicidae) II. - Annales Entomologici Fennici, Helsinki 55 (3): 111-129