The Gray-backed Tachuri is a rare species of flycatcher endemic to eastern Brazil. A tiny, drab flycatcher, this species is gray-headed with a white supercilium and brown back, largely orange-buff underparts, and drab wings with faint brownish wingbars. It is visually quite distinctive from its congener, the Bearded Tachuri (P. pectoralis). The Gray-backed Tachuri favors open grassland habitat between 1100 and 1600 meters on sparsely vegetated serras in its tiny range in interior eastern Brazil. The species can often be located by its weak, stuttering trill of a song.