| - . . . | - Phylum 1 |
| - Subphylum 1 | |
| - Class INSECTA | |
| - Order EPHEMEROPTERA |
Family Baetidae | Family Heptageniidae |
Family Ephemerellidae | Family Ephemeridae |
Family Siphlonuridae | Family Leptophlebiidae |
Family Potamanthidae | Family Caenidae |