Naming
It was described as a separate species by A. P. Capparella, Gary H. Rosenberg & Steven W. Cardiff in Ornithological Monographs 48, Studies in Neotropical Ornithology honoring Ted Parker, 1997, p. 165-170 but most authorities still maintain it as a sub-species of Black-headed Antbird P. rufifrons on the grounds that the voices and plumage are practically identical.
Distribution
This putative species is found in Amazonian Brazil and adjacent areas of Venezuela, Colombia and Peru. It is found in humid forests and secondary woodland often on sandy soil.References:
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