Position in a system
| system | Vitae - living organisms |
| domain | Eukaryota Whittaker & Margulis, 1978 - lifeforms with nucletic cells |
| superregnum | Unikonta |
| system | Opisthokonta Cavalier-Smith, 1987 |
| kingdom | Animalia Linnaeus, 1758 - animals |
| subregnum | Eumetazoa Butschli, 1910 |
| divisio | Bilateria Hatschek, 1888 |
| subdivisio | Protostomia Grobben, 1908 - protostomes |
| phylum | Arthropoda - Arthropods |
| subphylum | Hexapoda Blainville, 1816 |
| class | Insecta - Insects |
| subclass | Pterygota |
| infraclass | Palaeoptera Martynov, 1923 |
| superorder | Ephemeropteroidea Rohdendorf, 1968 |
| order | Ephemeroptera Hyatt & Arms, 1891 - mayflies |
| suborder | Setisura |
| superfamily | Heptagenioidea |
| family | Heptageniidae |
| genus | Epeorus Eaton, 1881 |
| species | Epeorus torrentium Eaton, 1881 |
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