Once identified as a piprid, the streaked underparts become virtually diagnostic throughout this bird’s distributional range. Differs from the allopatric and formerly conspecific Kinglet Manakin (Machaeropterus regulus) in its much broader pale purplish stripes on the underparts of males, whitish versus pinkish-white throat, lack of paler green panel in closed wing, and entirely different song, consisting of one versus two notes, with all comparable elements lower-pitched, and total length shorter. In parts of southwest Amazonia, in particular, the present species’ range overlaps with that of the Fiery-capped Manakin (Machaeropterus pyrocephalus), the male of which has a very different coronal pattern (appearing mainly yellow when seen side-on) and shows much less and weaker streaking on the underparts, while the female displays only very subtle streaking below, and this is confined to the mid-belly.