Pyriglena atra is an antbird of coastal forest in northeastern Brazil. It has red eyes; males are black, while females are mainly reddish brown. It forages in dense lower vegetation along forest edges.
Males are black and have a small back patch made of black feathers edged in white. Females are reddish brown, with a black tail, brown underparts, and a whitish throat. The account describes red eyes in the species.
It uses dense understory at the edges of lowland coastal forest, including secondary growth. The account describes foraging among tangled vegetation on low horizontal perches and avoidance of open understory.
An extinction-risk assessment has not been added yet.