Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
   Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
     Infraclass Neoaves Sibley et al., 1988 see Subcohort Neoaves Sibley et al., 1988
       Parvclass Passerae see Superorder Passerimorphae Sibley et al., 1988
         Superorder Passerimorphae Sibley et al., 1988
           Order Passeriformes Linnaeus, 1758
             Suborder Tyranni - suboscines
               Infraorder Tyrannides Sibley et al., 1988
                 Parvorder Tyrannida Wetmore & Miller, 1926
                   Family Tyrannidae Vigors, 1825 - tyrant-flycatchers
                     Subfamily Tyranninae see Family Tyrannidae Vigors, 1825
                       Genus Knipolegus Boie, 1826
                         01 Knipolegus striaticeps (d'Orbigny & Lafresnaye, 1837) - cinereous tyrant
                         02 Knipolegus hudsoni P.L. Sclater, 1872 - Hudson's black-tyrant
                         03 Knipolegus poecilocercus (Pelzeln, 1868) - Amazonian black-tyrant
                         04 Knipolegus signatus (Taczanowski, 1874) - Andean tyrant
                         05 Knipolegus cyanirostris (Vieillot, 1818) - blue-billed black-tyrant
                         06 Knipolegus poecilurus (P.L. Sclater, 1862) - rufous-tailed tyrant
                         07 Knipolegus orenocensis Berlepsch, 1884 - riverside tyrant
                         08 Knipolegus aterrimus Kaup, 1853 - white-winged black-tyrant
                         09 Knipolegus nigerrimus (Vieillot, 1818) - velvety black-tyrant
                         10 Knipolegus lophotes Boie, 1828 - crested black-tyrant