[1] The black-capped piprites is distributed unevenly in the southeastern region of Brazil (south of Minas Gerais and the state of Rio de Janeiro) and in the extreme northeast of Argentina, in the province of Misiones.

[1] The adult black-capped piprites is a tyranid with a black cap and yellow beak.

It has contrasting chestnut-colored upperparts, yellow legs, blackish and yellow-green remiges.

[7] The male black-capped piprites has a display ritual it performs during the mating season.

[7] The mating season takes place between September and November; nest construction has been observed in October.

[1] The species' calls include a single "whééu" sound, followed by a variable series of brief, softer vocalizations.

[2] The species P. pileatus was first described in 1822 by Dutch zoologist Coenraad Jacob Temminck; its type locality is Curitiba, Paraná, Brazil.