A motorcyclist was injured in an unusual wipeout caused by a massive swarm of mayflies on a local road on Sept. 13.

Wild video shows mayfly swarms on Causeway Bridge in Louisiana ...

One of the worst seasons in Louisiana is underway: Mayfly season. A new video shot this week showed mayfly swarms near ...

Mayflies leave their freshwater homes when their wings develop. The insects take to land to mate, a process that is short-lived because they live for only 24 to 72 hours after leaving their water ...

Wild video shows mayfly swarms on Causeway Bridge in Louisiana ...

Mayflies emerge when deep water temperatures reach 68 degrees, which hasn't happened yet in the Great Lakes. Residents can mitigate mayfly presence by using yellow light bulbs and sealing windows and ...

Add Yahoo as a preferred source to see more of our stories on Google. Communities along the Great Lakes are preparing for the annual mayfly season, but water temperatures may not be warm enough quite ...