Pristiphora maesta - Species not placed in a group
Females of this species is similar to Pristiphora biscalis. Pristiphora maestra species has pale cerci and at least a black clypeus. Colour mainly black but pale on the pronotum and the apex of the abdomen laterally and beneath. Males are best determined by examination of the penis valves.
Pristiphora maesta larvae feed socially on crab apple and apple trees.
Size: 5.5 - 7.0mm
Flight period: April to May and possibly August
Plant associations: Malus sylvestris and Malus domestica (crab apples and apples)
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
Prous, M., Kramp, K., Vikberg, V. and Liston, A., 2017. North-Western Palaearctic species of Pristiphora (hymenoptera, tenthredinidae). Journal of Hymenoptera Research, 59