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 | Agnotozoa Moore et al., 1952 |
| phylum | Orthonectida Giard, 1880 |
| family | Rhopaluridae Stunkard, 1937 |
| genus | Rhopalura Giard, 1877 |
| species | Rhopalura philinae Lang, 1951 |