Home Insects Other insects Mayflies (Ephemeroptera) [ sightings | field guide ]

Mayflies (Ephemeroptera)


Mayflies are the most primitive winged insects. They pass the majority of their lives as aquatic nymphs in streams and lakes, and are not tolerant of polluted conditions. They are unique among insects in having an extra pre-adult (subimago) winged stage; it lasts only a day or two and is inactive, resting in vegetation. The true adult (imago) stage then emerges, leaving a shed skin, and takes flight, often to join a swarm over water or waterside vegetation.

No species currently belong to this list.

Conservation Level

  • All conservation levels (change?)


  • All invasiveness levels (change?)


Become the first moderator for Mayflies (Ephemeroptera)!

Apply now

Machine learning

Machine learning is not enabled.

Follow Mayflies (Ephemeroptera)

Receive alerts when new sightings are reported


Share field guide

Share link to Mayflies (Ephemeroptera) field guide

2,074,028 sightings of 18,544 species in 4,977 locations from 10,210 members
CCA 3.0 | privacy
We acknowledge the Traditional Owners of this land and acknowledge their continuing connection to their culture. We pay our respects to their Elders past and present.