This taxon is Not Recognised as a species by BirdLife International.
Meiglyptes tristis and M. grammithorax (del Hoyo and Collar 2014) were previously lumped as M. tristis following Sibley and Monroe (1990, 1993).
BirdLife International (2016) Species factsheet: Meiglyptes tristis. Downloaded from http://www.birdlife.org on 07/12/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 07/12/2016.