A species of mayfly previously thought to be extinct because of how rare it is has now reappeared in Thailand.

The rare insect, first described in 2006, had vanished from records. Despite many expeditions, it had not been seen since its ...

A rare Behningia mayfly nymph has been rediscovered after 22 years without sightings, revealing key secrets about healthy ...

Mayflies are aquatic insects with short adult lifespans, often only a few days for males and possibly minutes for some females. Emerging in early summer when water temperatures reach 68 degrees, ...

Mayflies' presence is often seen into August, as different cohorts of the insects at different times complete the emerge-mate-die cycle. The critters do have their fans.

The lights will go out on a bridge over the Mississippi River in Winona, Minnesota, for the next few weeks to squelch the ...

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 ...

Mayflies are small (quarter-sized or larger) aquatic insects. They spend most of their life cycle in water then, as adults, they leave to mate, according to the National Wildlife Federation.