Understory antbird of wet, forested habitats. Males are evenly gray; females are warm brown. Both sexes have tiny white wing spots and light gray eyes. Part of the species complex previously known as “Spot-winged Antbird;” it is similar to the previously conspecific Brownish-headed Antbird, which is separated by range and habitat. Humaita Antbird is found away from the foothills, in the Amazonian lowlands, while Brownish-headed is found in the understory of mature rainforest along the base of the Andes. In parts of its range, it is found nearly exclusively in palm swamps. Its song is a slowly-rising series of rapid high notes.