"Aves" . . "Thamnophilidae" . . . . . . "Animalia" . . . "Passeriformes" . . "Chordata" . . . "Sclater 1857" . . . . "Herpsilochmus pectoralis" . . "Herpsilochmus" . "Pectoral Antwren" . "Herpsilochmus pectoralis Sclater 1857" .