Simias concolor Miller 1903

Simias concolor Miller 1903, Smithson. Misc. Coll., 45: 67.

Type Locality: Indonesia, W Sumatra, S Pagai Isl.

Vernacular Names: Simakobou.

Synonyms: Simias siberu Chasen and Kloss 1927 .

Distribution: Mentawai Isls (Indonesia).

Conservation: CITES – Appendix I and U.S. ESA – Endangered as Nasalis concolor; IUCN – Endangered as S. c. concolor and S. c. siberu .