living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Phylum Arthropoda Siebold, 1848 - arthropods
           Subphylum Uniramia Snodgrass, 1935 see Phylum Arthropoda Siebold, 1848
             Class Insecta Linnaeus, 1758 - insects
               Subclass Pterygota Lang, 1888 - winged insects see Infraclass Pterygota Lang, 1888
                 Infraclass Neoptera Martynov, 1923 - modern, wing-folding insects see Division Neoptera Martynov, 1923
                   Superorder Holometabola - holometabolans see Subdivision Endopterygota Sharp, 1899
                     Order Siphonaptera Latreille, 1825 - fleas
                       Superfamily Pulicoidea
                         Family Pulicidae
                           1 Genus Ctenocephalides Stiles & Collins, 1930
                           2 Genus Delopsylla Jordan, 1926
                           3 Genus Echidnophaga Olliff, 1886
                           4 Subfamily Xenopsyllinae see Tribe Xenopsyllini
                           5 Subfamily Spilopsyllinae Oudemans, 1909 see Tribe Spilopsyllini Oudemans, 1909
                           6 Subfamily Archaeopsyllinae see Tribe Archaeopsyllini
                           7 Subfamily Pulicinae
                           8 Subfamily Neotunginae
                           9 Subfamily Hectopsyllinae