This species is similar to Macrophya annulata but has a conspicuous white fleck on the hind coxa (on the sclerite, not the membrane). The red girdled abdomen may be infuscate in the middle on the dorsal surface, or may be absent altogether.
Larvae are unrecorded.
Size: 10 - 12.5mm
Status: Very local
Flight period: May to July
Plant associations: unknown
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