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 - bilaterians |
| subdivisio | Protostomia Grobben, 1908 - protostomes |
| phylum | Annelida Lamarck, 1809 - annelids |
| class | Clitellata Michaelsen, 1919 |
| subclass | Oligochaeta |
| order | Haplotaxida |
| suborder | Tubificina |
| superfamily | Tubificoidea |
| family | Naididae Ehrenberg, 1828 |
| subfamily | Naidinae |
| genus | Nais O.F. Müller, 1773 |
| species | Nais barbata O.F. Müller, 1773 |