The species was first described in 1875 by ornithologist George Newbold Lawrence, who placed this species in the genus Myiarchus.
Deltarhynchus is similar to the genus Myiarchus, but is distinguished from it by a broader and shorter bill, more rounded wings, a different face pattern, pale cinnamon wing and tail edgings, voice, streaking on the chest, and the bird's skulking habits [REF].