Dark Hendrickson
Ephemerella subvaria
The adult is a short-lived flying mayfly found around spring streams and rivers during synchronized hatches. It spends its brief life in mating flights above riffles and nearby banks, with no functional feeding as an adult. Females return to the water surface to release eggs, completing the cycle back to aquatic nymphs. Its well-known emergence is a notable event for stream ecologists and anglers alike.
- Type
- Wing
- Conservation status
- NE
Growth chain
- ?
- ?
- Dark Hendrickson