kingdom: Animalia >
phylum: Chordata >
subphylum: Vertebrata >
infraphylum: Gnathostomata >
parvphylum: Osteichthyes >
megaclass: Tetrapoda >
class: Aves >
order: Passeriformes >
family: Thamnophilidae Swainson, 1824 >
genus: Formicivora Swainson, 1824 >
species: Formicivora grisea (Boddaert, 1783) >