see text Percnostola is a genus of insectivorous passerine birds in the family Thamnophilidae.

The genus was erected by the German ornithologists Jean Cabanis and Ferdinand Heine in 1860.

[2] The type species is the black-headed antbird.

[3] The name of the genus comes from the Ancient Greek words perknos meaning "dark" or "dusky" and stolē meaning "dress" or "clothing".

[4] The genus contains two species:[5] The genus previously included the white-lined antbird but a genetic study published in 2013 found that it is embedded within Myrmoborus.