Ephemerelloidea

Ephemerelloidea is a superfamily of mayflies in the suborder Pannota. It is a basal group of mayflies with a worldwide distribution. Members of this super-family can be distinguished from those of Caenoidea by the fact that the gills of the nymphs are not filamentous.^[1]

Ephemerelloidea
Eurylophella sp.
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Ephemeroptera
Suborder:	Pannota
Superfamily:	Ephemerelloidea

The following families are recognised:^[2]

• Ephemerellidae
• Leptohyphidae
• Tricorythidae