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] Passeriformes Linnaeus, 1758
         suboscines see Suborder Suboscines
           Tyranni see Suborder Tyranni
             Family Thamnophilidae Swainson, 1824 - antbirds
               Genus Formicivora Swainson, 1824
                 1 Formicivora iheringi Hellmayr, 1909 - narrow-billed antwren
                 2 ‡Formicivora erythronotos Hartlaub, 1852 - black-hooded antwren
                 3 Formicivora grisea (Boddaert, 1783) - white-fringed antwren
                 4 Formicivora serrana (Hellmayr, 1929) - Serra antwren
                 5 Formicivora littoralis Gonzaga & Pacheco, 1990
                 6 Formicivora melanogaster Pelzeln, 1868 - black-bellied antwren
                 7 Formicivora rufa (Wied-Neuwied, 1831) - rusty-backed antwren