This taxon is Not Recognised as a species by BirdLife International.
Pyrrhura leucotis and P. emma (del Hoyo and Collar 2014) were previously lumped as P. leucotis, under which P. griseipectus and P. pfrimeri were also formerly subsumed following (Sibley and Monroe 1990, 1993).
BirdLife International (2016) Species factsheet: Pyrrhura leucotis. Downloaded from http://www.birdlife.org on 02/12/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 02/12/2016.