Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
               Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
                 Order Apodiformes Peters, 1940 - swifts
                   Family Apodidae Hartert, 1897 - swifts
                     Subfamily Apodinae Hartert, 1897 - true swifts
                       Genus Apus Scopoli, 1777 - house swift
                         1 Apus apus (C. Linnaeus, 1758) - common swift
                         2 Apus melba (C. Linnaeus, 1758) see Tachymarptis melba (C. Linnaeus, 1758)
                         3 Apus pallidus (Shelley, 1870) - pallid swift
                         4 Apus affinis (J.E. Gray, 1830) - little swift
                         5 Apus caffer (M.H.K. Lichtenstein, 1823) - white-rumped swift
                         6 Apus horus (Heuglin, 1869) - Horus swift
                         7 Apus pacificus (Latham, 1802) - fork-tailed swift
                         8 Apus andecolus (d'Orbigny & Lafresnaye, 1837) see Aeronautes andecolus (d'Orbigny & Lafresnaye, 1837)