Locally in south-eastern Peru (Cuzco and Madre de Dios), south-western Amazonian Brazil (Acre and Rondônia) and north-western Bolivia (Pando and northern La Paz).
 
Rarity Status
Currently this species is not classified as a rarity in this country OR information has not been updated.
Population
Estimated population is unknown (2010).
Bamboo Antshrike (Cymbilaimus sanctaemariae) [XC477086]
by Dante Buzzetti from Rio Chandless,Parque Estadual Chandless,Manoel Urbano,Acre, Brazil (song)
Bamboo Antshrike (Cymbilaimus sanctaemariae) [XC388379]
by Rolf A. de By from Colniza, Mato Grosso, Brazil (song)
Subspecies
Genus presumed related to Thamnophilus on basis of external morphology, especially the strongly hooked bill, but supporting molecular or other evidence unavailable. Previously treated as conspecific with Fasciated Antshrike (Cymbilaimus lineatus), but occurs sympatrically with that species.