. "Passeriformes" . "Chordata" . "Thamnophilidae" . . "Aves" . "Carriker 1936" . . . . "Myrmotherula grisea" . . . . . "Myrmotherula" . . . . "Ashy Antwren" . . "Animalia" . . "Myrmotherula grisea Carriker 1936" .