Secretive, rare medium-sized antshrike of the dense forests of the Cordillera Divisor of remote western Brazil and eastern Peru. Males are dark gray with a bluish tint to the back and upperparts, while females are bluish-gray above and brownish-orange below. Inhabits the lower levels of forests, where it is more often heard than seen; voice is a fast series of notes increasing in speed before finishing with a final higher note.