A Robber Fly, Stenopogoninae
They catch their victims in midair and stick their beak into the fly, (bee or other small insects) and inject saliva containing neurotoxic and proteolytic enzymes. After awhile they suck in dinner.
![A Robber Fly, Stenopogoninae is a rather ruthless predator. Most small flies, bees and other insects are nothing but lunch. - grid24_12 A Robber Fly, Stenopogoninae is a rather ruthless predator. Most small flies, bees and other insects are nothing but lunch. - grid24_12](/images/grid24_12/10361/images/insects/stenopogon/stenopogon-californiae.jpg)
Robber flies are opportunistic predators of other insects.