Family Cephidae Newman 1834 (stem sawfly)
Insecta - Hymenoptera - Cephidae
Full reference: E. Newman. 1834. Attempted division of British insect into natural orders. The Entomological Magazine 2:379-431
Parent taxon: Cephoidea according to S. B. Archibald et al. 2018
See also Archibald and Rasnitsyn 2015, Carpenter 1992, Sharkey 2007 and Taeger et al. 2010
Sister taxon: Sepulcidae
Subtaxa: Cephinae Cuspilonginae
Type: Cephus
Ecology:
Distribution:
• Eocene of Canada (2: British Columbia collections), Poland (1), United States (1: Colorado)
• Cretaceous of Mongolia (1), the Russian Federation (2)
Total: 7 collections including 8 occurrences