noun. slender insect with delicate membranous wings having an aquatic larval stage and terrestrial adult stage usually lasting less than two days.
- family Ephemeridae
Sentences with mayfly
1. Noun, singular or mass
An interesting fact about mayflies is that they have a special preadult phase in which they can fly; however once it sheds its adolescent skin, the mayfly returns to the water to feed, mate or swim.
In general, mayfly nymphs are not picky eaters.