STUART WILSON / SCIENCE PHOTO LIBRARY STUART WILSON / SCIENCE PHOTO LIBRARY
This Robber Fly (Proctacanthus sp.) is endemic to the Great Sand Dunes and surrounding habitat in Colorado. It is a predator of other insects, usually catching them in flight. In this case it is feeding on a butterfly. More work needs to be done by an insect taxonomist before a species name is assigned to this robber fly.
Model release not required. Property release not required.