Janus luteipes

One of three species in Britain. The tegulae are black or brown and the pronotum is edged with white behind. In Janus cynosbati, the tegulae are yellow and the pronotum is not edged with white.

Janus luteipes larvae feed inside the shoots of willows, poplars, etc.

Jump to other Cephidae

Size: 6 - 9mm.

Status: Locally common.

Distribution: England, Wales

Flight period: May to July

Plant associations:
Salix spp. (willows) (4)
Populus spp. (poplars) (4) incl. Populus tremula (aspen) (2)
Viburnum spp. (wayfarer, guelder rose) (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.) Lacourt J., 2020. Hymenoptera of Europe 2. Sawflies of Europe. NAP Editions.

(3.) 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

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