Robber flies

Robber Flies are also known as Assassin Flies.

Robber Flies are also known as assassin flies. The name "robber flies" reflects their notoriously aggressive predatory habits. They feed mainly or exclusively on other insects and as a rule they wait in ambush and catch their prey in flight. They are powerfully built, bristly flies with a short, stout proboscis enclosing the sharp, sucking hypopharynx.