Hylobates klossii (Miller, 1903) . Smithson. Mise. Coll., 45:70.

TYPE LOCALITY: Indonesia, West Sumatra, S Pagai Isl .

DISTRIBUTION: Mentawai Isis (Indonesia).

STATUS: CITES - Appendix I; U.S. ESA and IUCN - Endangered.

COMMENTS: Subgenus Hylobates .