Group laricis

Description follows Prous et al, 2017.  

Species within this group have the following characteristics. The sawsheath is short with shallow invagination and with the cerci protruding beyond the apex.  The penis valves have a short valvispina without a posteriorly contricted hump. The anterior protibial spur has evenly distributed hairs but lacks any dense velum patch, and the body is mostly black.  

The larvae feed on Larix spp. (larches).

Group laricis

Pristiphora friesei (Konow, 1904) 

Pristiphora laricis (Hartig, 1837)

 

 

References:

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