You stand in the driveway and stomp your foot like a petulant 3-year-old, not once but twice in vain pursuit of an elusive Asian insect, then look up and see hundreds of its kin stand proboscis-deep ...

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, ...