Noun: family Ephemeridae
- The family of mayflies (Ephemeridae)
- Ephemeridae
Type of: arthropod family
Part of: Ephemerida, Ephemeroptera, order Ephemerida, order Ephemeroptera
Type of: arthropod family
Part of: Ephemerida, Ephemeroptera, order Ephemerida, order Ephemeroptera