Heptagenia flavescens
- kingdom: Animalia
- phylum: Arthropoda
- class: Insecta
- order: Ephemeroptera
- family: Heptageniidae
- genus: Heptagenia
- species: Heptagenia flavescens
Port-Cartier
Quebec
Canada
Coralville
Iowa
United States
Heptagenia flavescens Port-Cartier Coralville