What Does a Mayfly Insect Look Like? If you’ve ever seen a reedy-looking bug with two long, antenna-looking protrusions from its abdomen, you might have seen a mayfly. Mayflies have thin bodies ...

Mayfly adults typically live for only one day. The female mayfly may live for less than five minutes as an adult ...

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 ...