One of three very similar species. This species is larger than Macrophya ribis and the head around the frons and temples is almost impunctate (in ribis, the head has dense, coarse punctures in these areas). The white on albicincta extends to the edge of the pronotum and the scutellum and also sometimes the first tergite (these are all black in ribis).
Macrophya alboannulata specimens hve previously been identified as albicincta but were recognised by Liston and added to the checklist. The two species can be separated by the colouring on the hind trochanters. In albicincta the hind trochanters are predominantly white, whereas in alboannulata the hind trochanters are significantly marked with black.
Size: 10 - 11mm
Distribution: England, Scotland, Wales
Flight period: April to July
Plant associations: Sambucus nigra (elder) and sometimes Valeriana officinalis (valerian)
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