Phylum Chordata Bateson, 1885 - chordates
   Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
     Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
       Superorder Neognathae Pycraft, 1900 see Cohort Neognathae Pycraft, 1900
         Order Psittaciformes Wagler, 1830 - parrots
           Family Psittacidae Illiger, 1811 - cockatoos and parrots
             Subfamily Psittacinae Illiger, 1811 - typical parrots
               Genus Forpus Boie, 1858
                 Forpus coelestis (Lesson, 1847) - Pacific parrotlet
                 Forpus conspicillatus (Lafresnaye, 1848) - spectacled parrotlet
                 Forpus cyanopygius (Souancé, 1856) - Mexican parrotlet
                 Forpus passerinus (Linnaeus, 1758) - green-rumped parrotlet
                 Forpus sclateri (Gray, 1859) - dusky-billed parrotlet see Forpus modestus (Cabanis, 1848)
                 Forpus xanthops (Salvin, 1895) - yellow-faced parrotlet
                 Forpus xanthopterygius (Spix, 1824) - blue-winged parrotlet