Trachelus tabidus
The smaller of the two Trachelus species. The second species, Trachelus troglodyta, is extinct in Britain. The abdomen is black with a row of yellow flecks on lateral margins and the wings are grey with black veins and stigma. In Trachelus troglodyta the abdomen is banded with yellow and the wings are yellowish with yellow veins and stigma.
Trachelus tabidus larvae feed on cereals and grasses.
Size: 7-10mm
Status: Locally common
Distribution: England, Wales
Flight period: May to July
Plant associations: Cereal crops and wild grasses.
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