Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Protozoa Goldfuss, 1818 see Kingdom Protozoa Goldfuss, 1818
     Class Ciliata see [unranked] ciliates
       Order Peritricha Stein, 1859
         Suborder Mobilia
           Genus [Trichodina] Ehrenberg, [1830]
             Trichodina pediculus (Müller, 1773) Ehrenberg, 1830