Insecta - Hymenoptera - Apidae
Alternative spelling: Calyptapis
Full reference: T. D. A. Cockerell. 1906. Fossil Hymenoptera from Florissant, Colorado. Bulletin of the Museum of Comparative Zoology, Harvard College 50(2):33-58
Parent taxon: Bombus according to M. S. Engel and T. Wappler 2025
See also Cockerell 1906, Cockerell 1908, Cockerell 1908, Dehon et al. 2019 and Engel 2021
Sister taxa: Bombus (Bombus), Bombus (Cullumanobombus), Bombus (Kronobombus), Bombus (Megabombus), Bombus (Melanobombus), Bombus (Mendacibombus), Bombus (Paraelectrobombus), Bombus (Psithyrus), Bombus (Timebombus), Bombus abavus, Bombus anacolus, Bombus coironensis, Bombus crassipes, Bombus dilectus, Bombus florissantensis, Bombus luianus, Bombus messegus, Bombus proavus, Bombus vetustus
Subtaxa: Bombus (Calyptapis) florissantensis
Ecology:
Distribution:
• Eocene of United States (2: Colorado collections)
Total: 2 collections each including a single occurrence