Ground-foraging-predator
Guides
Stichopogon trifasciatus
Three-banded Robber Fly
Stichopogon trifasciatus, commonly known as the three-banded robber fly, is a small predatory fly in the family Asilidae. Adults measure 10–15 mm and are distinguished by three alternating light and dark bands on the abdomen, a bright silvery or blue-gray body, and a preference for barren, sandy or gravelly habitats near water. The species occurs throughout North America from southern Canada to Central America, and south into the Neotropics. Formerly considered a separate species, S. salinus from the western Rocky Mountain region was synonymized with S. trifasciatus in 2010.