The world’s 25 most endangered primates have six species from Africa, four from Madagascar, nine from Asia, and six from the Neotropics (South America).
Among these 25, Indonesia and Madagascar both have four, China, Nigeria and Vietnam have three, Brazil, Malaysia, and Tanzania have two.
Benin, Bolivia, Brunei, Cameroon, Colombia, Costa Rica, Democratic Republic of the Congo, Laos PDR, Myanmar, Panama, Peru, Singapore, Togo and Venezuela each have one.
Two primates found in Northeast India and Bangladesh (Phayre’s Langur and the Western Hoolock Gibbon) were among species considered for the final list.
The Phayre’s Langur (Trachypithecus phayrei), is one of the least-studied Asian colobines or leaf-eating monkeys.
Its distribution was recently restricted to eastern Bangladesh, northeastern India, and western Myanmar.
The Western Hoolock Gibbon (Hoolock hoolock), is one of 20 species of gibbons and is listed as Endangered on the IUCN Red List.