Trichiosoma vitellina
Rarely encountered in Britain and Ireland. 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.
Larvae feed on willows.
Size: 13 - 24mm
Status: Rare
Distribution: England, Scotland, Wales, Ireland
Flight period: May to June
Plant associations: Salix spp. (willows)
The National Biodiversity Network records are shown on the map below. (See terms and conditions)
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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