Tenthredo notha - Broadbar Clover Sawfly

Recorded commonly throughout all of mainland Britain, as well as Orkney and the Hebrides (Musgrove, 2023).

One of a complex of four species: arcuata, brevicornis, notha, schaefferi. Males of the four species cannot always be reliably separated, though Taeger has produced a key to males on the continent. Tenthredo notha and schaefferi both have the yellow band on the first tergite broadening laterally and continuing down onto the lateral face. In notha, the hind tibia is marked with black apically in both sexes. The broad yellow band on tergite one does not narrow at the lateral edges.

Larvae feed on clovers and vetches.

Jump to other species of Tenthredo

Size: approx. 9 - 11mm

GB IUCN Status: Least Concern
GB Rarity Status: None

Distribution: England, Scotland, Wales, Ireland

Flight period: July to August

Plant associations: Trifolium repens (white clover), Lathyrus pratensis (meadow vetchling) and Vicia cracca (tufted vetch)


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

Fekete, K. (2018) Beginner’s guide to identifying British Tenthredo, Natural History Museum, London. http://www.nhm.ac.uk/content/dam/nhmwww/take-part/identification-trainers/sawflies-guide-id-trainees.pdf [Accessed 26Apr2019]

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

Musgrove, A.J. 2023. A review of the status of sawflies of Great Britain - Phase 2: The Athaliidae and the Tenthredinidae (excluding Nematinae). Natural England, unpublished

Taeger, A., (1988) Dritter Beitrag zur Kenntnis der Blattwespengattung Tenthredo L. (Hymenoptera: Symphyta: Tenthredinidae), Beitr. Ent., Berlin