Corynis crassicornis

Only known in Britain from an unverified record from Bristol in the late 18th to early 19th century, the evidence is not strong enough for it to be inferred that Britain was part of the natural range of the species. Found sporadically throughout Europe, rarely on the near continent. A small dark species with yellow legs and yellow bands on the apical margins of the tergites giving a banded appearance. The tergite bands broaden on the lateral faces.

Jump to other Cimbicidae

Size: 6 - 10mm

GB IUCN Status: Not Applicable
GB Rarity Status: Not Applicable

Distribution: Not Applicable

Flight period: May to August

Plant associations: Not known. On the continent Sedum album and Sedum acre (white stonecrop and goldmoss stonecrop)


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.

Liston, A. D. 1997: Discovery of the larval hostplant of Corynis crassicornis (Rossi) (Hym., Cimbicidae: Coryninae), and notes on the species natural history. - Sawfly News. - Chalastos, Daibersdorf., Daibersdorf 1 (3): 22-25

Musgrove, A.J. 2022. A review of the status of sawflies of Great Britain - Phase 1: families other than Tenthredinidae. Natural England, unpublished

Viitasaari, M. 1989: Taxonomic notes on the genus Trichiosoma Leach (Hymenoptera, Cimbicidae) II. - Annales Entomologici Fennici, Helsinki 55 (3): 111-129