Giant Robber Fly

Promachus albifacies

a robber fly, Promachus,  photo © by Mike Plagens

Saguaro National Monument, East Unit, Pima Maricopa Co., Arizona. 28 Aug. 2016.

Asilidae -- Robber Fly Family

This is a top aerial predator in the insect world capable of taking prey much larger than itself! They tend to sit in the sunshine on an exposed rock where they can view a swath of open space. They capture other flying insects on the wing often tumbling to the ground under the combined weight.

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Copyright Michael J. Plagens, page created updated 06 Oct. 2016.