Lancets of Pristiphora staudingeri showing variation in the number of ctenidia. 73 PR.441VV with ctenidia on annulets (3)4–12(13) 74 PR.402VV with ctenidia on annulets 3–13 75 PR.373VV with ctenidia on annulets 3–14 76 PR.457VV with ctenidia on annulets (2)3–15.

 
 
  Part of: Prous M, Vikberg V, Liston A, Kramp K (2016) North-Western Palaearctic species of the Pristiphora ruficornis group (Hymenoptera, Tenthredinidae). Journal of Hymenoptera Research 51: 1-54. https://doi.org/10.3897/jhr.51.9162