Promachus albifacies with prey and kleptoparasitic flies

Licence: 
Creative Commons Licence
Description: 

The Robber Fly is Promachus albifacies, the prey is a native bee of the genus Agapostemon female, the ant is a Pogonomyrmex and of course the fly is another member of the Chloropidae. This photo taken on my property Hereford Arizona at five thousand feet elevation, Huachuca Mountains.

Taxonomic name: 
Chloropidae (Classification)
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith