The surefire way to know whether it’s a sweat bee or a corn fly buzzing around is if it stings. The halictid bee stings, but the corn fly, also called a hover fly, does not. “They’re mimics of bees, ...

Hover flies have one set of wings and no stinger. If you've been outside lately, chances are you've seen them — small flying insects that resemble sweat bees. In fact, you may have actually called ...