This taxon is Not Recognised as a species by BirdLife International.
Gallirallus sharpei (Sibley and Monroe 1990, 1993) is now considered a colour morph of Buff-banded Rail G. philippensis based on unpublished genetic work (R. W. R. J. Dekker in litt. 2008).
BirdLife International (2016) Species factsheet: Gallirallus sharpei. Downloaded from http://www.birdlife.org on 03/12/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 03/12/2016.