Trachelus troglodyta

Larger of the two species found in Britain. Previously recorded from London and Hertford. Abdomen with yellow bands and wings yellowish with yellow veins and stigma.

Trachelus troglodyta larvae feed on rye. 

Jump to other Cephidae

Size: 10 - 14mm.

Status: Extinct in Britain

Distribution: Formerly England

Flight period: June

Plant associations: Secale cereale (Rye) (1)


(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.