Female: The head is mostly black with yellow on the inner eye orbits, lower part of clypeus and a yellow stripe from the eye to the back of the head. The thorax is primarily black but with a yellow mesoscutellum and metascutellum. Abdomen mostly black above with lateral margins narrowly yellow. Apical tergites may be margined with pale yellow right across. Tergites 4 and 5 (sometimes others also) marked reddish-brown. Venation is basally yellow with yellow costa and subcosta and otherwise brown.
Male: The head anteriorly yellow along with genae and a yellow stripe from the eye to the back of the head. Mesoscutellum and metascutellum yellow. Abdomen mostly black above with tergites 4 and 5 (sometimes entirely) yellowish-brown. Venation as for female.
Larvae feed on rose leaves. Early instars feed in a roll of the leaf margin. Late instars draw several leaflets together or fold a leaflet.
Size: Male: 8 - 10mm, Female: 8 - 12mm
Flight period: June
Plant associations: Rosa spp. (roses)
The National Biodiversity Network records are shown on the map below. (See terms and conditions)
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
Viitasaari, M. ed., 2002. Sawflies (Hymenoptera, Symphyta), I: a review of the suborder, the Western Palaearctic taxa of Xyeloidea and Pamphilioidea. Tremex Press.