What is "schistocichla"

Schistocichla is a genus of bird in the family Thamnophilidae. They are commonly included in the genus Percnostola instead. Until recently, Schistocichla only included three species, but following Braun et al. (2005) and Isler et al. (2007) several taxa previously considered subspecies of the spot-winged antbird have been elevated to species status.