Hylopetes sipora Chasen, 1940 . Bull. Raffles Mus., 15:117.
TYPE LOCALITY: " Sipora Island, Mentawi Islands, West Sumatra " [Indonesia] .
DISTRIBUTION: Sipora Isl (Indonesia) .
COMMENTS: Formerly included in spadiceus; see Hill (1961 c) who noted that an adult specimen is needed to clarify the status of this taxon. Part of the rodent fauna endemic to the Mentawi Archipelago (see comments under Leopoldamys siporanus).