Northern Chestnut-tailed Antbird (Sciaphylax castanea) [XC251209]
by Niels Krabbe from Zamora-Chinchipe: Filo de Chumbiriatza, tepui 4.5 km SW Las Orchideas, above \, Ecuador (song)
Northern Chestnut-tailed Antbird (Sciaphylax castanea) [XC86307]
by Andrew Spencer from Tepui Trail, Caba\u00f1as Yankuam, Zamora-Chinchipe, Ecuador (song)
Genus appears not to represent a monophyletic grouping, but traditional arrangement maintained pending further phylogenetic study. Closely related to Chestnut-tailed Antbird (Sciaphylax hemimelaena) and until very recently considered conspecific, but differs in, particularly, voice. Racial identity of northern populations in southern Colombia (Putumayo) and at lower elevations in eastern Ecuador (Napo) uncertain, but probably belong to centunculorum.
The following 2 subspecies are recognised:
centunculorum (Isler, ML et al., 2002) - Extreme southern Colombia (Putumayo), eastern Ecuador (Napo, Pastaza) and north-eastern Peru (Loreto).
castanea (Zimmer, 1932) - South-eastern Ecuador (Zamora-Chinchipe) and northern Peru (San Martín).