| 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 | Neoptera Martynov, 1923 |
| cohors | Holometabola |
| order | Aphaniptera Kirby & Spence, 1815 - fleas |
| superfamily | Ceratophylloidea |
| family | Ceratophyllidae |
| subfamily | Ceratophyllinae |
| genus | Nosopsyllus Jordan, 1933 |
| subgenus | Nosopsyllus Jordan, 1933 |
| species | Nosopsyllus barbarus (Jordan & Rothschild, 1912) |