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. The species is associated with wooded areas.
Macrophya blanda larvae are present between July and September on raspberry, blackberry, creeping cinquefoil and possibly other rosaceae. They develop over an eight to ten week period before entering a two to three week eonymph stage in leaf litter. It then burrows to hibernate under ground.
Size: 10 - 12.5mm
Status: Very local
Flight period: May to July
Plant associations: Rubus idaeus, Rubus fruticosus, Potentilla reptans (raspberry, blackberry and creeping cinquefoil)
Benson, R.B., 1952. Handbooks for the Identification of British Insects. Hymenoptera, Symphyta, Vol 6, Section 2(a-c), Royal Entomological Society, London
Chevin, H. 2002: Biologie et description de la larve de Macrophya blanda (Hymenoptera, Symphyta, Tenthredinidae). - Bulletin des Naturalistes des Yvelines, Versailles ser. 5, 29(4): 66-69
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
Macek, J., 2012. About Macrophya parvula and larvae of several Central European Macrophya (Hymenoptera: Tenthredinidae). Zootaxa, 3487(1), pp.65-76.