Subject: Predatory bee killer!
Location: Tucson, AZ
August 20, 2014 5:39 pm
This enormous predator buzzed down to enjoy its dinner on an elk antler in my yard – what is it?
This is one of the best feeding Robber Fly images we have received all summer. This is a Giant Robber Fly in the genus Promachus, a genus well populated in our archives this season due to all the images we have received of Red Footed Cannibalflies. This is a different member of the genus, and we believe it is Promachus albifacies, a species with no unique common name. You can compare your individual to this image on BugGuide.