Trichiosoma tibiale - Yellow-legged Hairy-clubhorn

Quinlan & Gauld (1981) synonymised tibiale within lucorum, meaning that most recent records of these two taxa cannot be satisfactorily separated. However, many workers clearly still refer to Benson (1951) as records of tibiale persist (Musgrove, 2022). The female differs from Trichiosoma 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.

Jump to other Cimbicidae

Size: 13 - 24mm

GB IUCN Status: Least Concern
GB Rarity Status: None

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)

References:

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 Natural England, unpublished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