Group carinata

Description follows Prous et al, 2017. Additional research is needed to delimit the species more reliably in this group and the species are not keyed beyond group level in Prous et al (2017).

Despite the problems in delimiting species there are some characteristics common to the group. They have a distinctly matt mesepisternum, and completely or largely black
body. The sawsheath is somewhat variable. The lancets lack setae and very similar to each other making it difficult to use lancets to separate the females. Penis valves are also hardly distinguishable in the males. The similarity and continuous variation of the characteristics mean it is unclear how many species should be recognised. More rearing needs to be carried out to determine which males and which females are from the same species. 

The larvae feed on Betula nana (Dwarf Birch), Betula pubescens (Downy Birch), Vaccinium uliginosum (Bog Bilberry) and Vaccinium myrtillus (Bilberry)

Group carinata

Pristiphora albilabris (Boheman, 1852)

Pristiphora borea (Konow, 1904)

Pristiphora breadalbanensis (Cameron, 1882)

Pristiphora carinata (Hartig, 1837)

Pristiphora coactula (Ruthe, 1859)

Pristiphora groenblomi (Lindqvist, 1952)

Pristiphora lativentris (Thomson, 1871)

 

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