Neornithes Gadow, 1893 - living birds
   Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
     Neoaves Sibley et al. 1988 see Subcohort Neoaves Sibley et al., 1988
       [Order] Apodiformes Peters, 1940 - swifts
         Family Hemiprocnidae Oberholser, 1906 [monotypic] - treeswifts
           Genus Hemiprocne Nitzsch, 1829
             Hemiprocne mystacea (Lesson & Garnot, 1827) - moustached treeswift
               1 Hemiprocne mystacea confirmata Stresemann, 1914
               2 Hemiprocne mystacea mystacea (Lesson & Garnot, 1827)
               3 Hemiprocne mystacea aeroplanes Stresemann, 1921
               4 Hemiprocne mystacea macrura Salomonsen, 1983
               5 Hemiprocne mystacea woodfordiana (Hartert, 1896)
               6 Hemiprocne mystacea carbonaria Salomonsen, 1983