Pristiphora alpestris - Pristiphora alpestris group
The female is best determined by the characteristics of the saw. Males are best determined by the penis valve.
Larvae feed on birches and develop rapidly (10 to 15 days).
Size: 5.0 - 6.0mm
Status: Data deficient
Flight period: May to July
Plant associations: Betula pendula and Betula pubescens (silver and downy birch)
The National Biodiversity Network records are shown on the map below. (See terms and conditions)
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, Vol. 59