Subfamily Stenopogoninae Hull 1962 (robber fly)
Full reference: F. M. Hull. 1962. Robber flies of the world, the genera of the family Asilidae. Bulletin of the United States National Museum 224:1-430
Parent taxon: Asilidae according to T. Dikow 2009
Sister taxa: none
Subtaxa: Enigmomorphini
Ecology:
Distribution:
• Eocene of United States (2: Colorado collections)
Total: 2 collections each including a single occurrence