Mayflies emerge when water temperatures reach 68 degrees, typically peaking in mid-to-late June. While considered a nuisance ...

These insects face great environmental threats including predators and rising water temperatures, but so far they are ...

Scientists scooped sand from a riverbed in Thailand and found two nymphs of rare mayfly species not seen in 22 years, a study said. Photo from Kwanboon and Boonsoong (2025) Knee-deep in a river of ...