Widespread throughout mainland Britain, as well as Orkney (Musgrove, 2023).
The abdomen is mostly black dorsally but most of the underside of the body and the legs is green. On the forewing the stigma is dark.
Pachyprotasis antennata larvae feed on ash or meadowsweet.
Size: 8 - 9mm
GB IUCN Status: Least Concern
GB Rarity Status: None
Distribution: England, Scotland, Wales, Ireland
Flight period: June to July
Plant associations: Filipendula spp. (meadowsweet) and Fraxinus spp. (ashes)
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
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 Natural England, unpublished