Trichiosoma lucorum - Wood Hairy-clubhorn
Most recent records of lucorum (post-1981) will have involved recorders referring to either Benson (1951) who synonymised tibiale (and other taxa) within lucorum. It is seldom evident which reference has been used for the identification of any given record. As a result, British records of lucorum cannot be assumed to rule out tibiale. All recent authors make it clear that they are highly uncertain about the validity of the keys they have produced for this genus (Musgrove, 2022). Description here follows Zhelochovtsev (1988). Males cannot be reliably distinguished from Trichiosoma laterale at present. The female is black on the abdomen and lacks any reddish-brown laterally or beneath. On the apical tergites, the silky, adpressed pubescence does not obscure the underlying puncturation.
Trichiosoma lucorum larvae feed on birches and 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: Betula spp. and Salix spp.(birches and 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 Natural England, unpublished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
Zhelohovcev, A. N., Zinovjev, A.G. 1988: 27. Otrjad Hymenoptera - Pereponchatokrylye Podotrjad Symphyta (Chalastogastra) - Sidjachebrjuhie.