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. 

Jump to other Cephidae

Size: 7-10mm

Status: Locally common

Distribution: England, Wales

Flight period: May to July

Plant associations: Cereal crops and wild grasses including...

Secale spp. (Rye grasses) (3)
Triticum spp. (Couch grasses) (3)


(1.) Benson, R.B., 1952. Handbooks for the Identification of British Insects. Hymenoptera, Symphyta, Vol 6, Section 2(a-c), Royal Entomological Society, London

(2.) Liston A., Knight G., Sheppard D., Broad G., Livermore L., 2014. Checklist of British and Irish Hymenoptera - Sawflies, ‘Symphyta’. Biodiversity Data Journal 2: e1168.

(3.) Liston, A., 1995. Compendium of European Sawflies, Chalastos Forestry, Daibersdorf