IUCN Species Survival Commission (SSC), Primate Specialist Group

Collectively, Cercocebus and Mandrillus include nine species and two subspecies of African monkeys: seven species of Cercocebus and two of Mandrillus, including two drill subspecies. Together, they represent some of the least studied and hence least known of the Afro-Eurasian Primates.

Distributed in the Sundaland region (Thai-Malay Peninsula, Sumatra, Borneo, Java and adjacent smaller islands), langurs of the genus Presbytis are one of the most threatened groups of Asian primates. According to the IUCN Red List of Threatened Species, 24 of the 28 taxa (>85%) are threatened with extinction (listed as Critically Endangered, Endangered or Vulnerable). One taxon is classified as Near Threatened and one as Data Deficient.

Ranging from forests in Senegal to the Zanzibar Archipelago, red colobus monkeys (Piliocolobus spp.) are the most threatened group of African monkeys. According to the IUCN Red List of Threatened SpeciesTM in 2020, every form of red colobus monkey is threatened with extinction, and 14 of the 18 taxa (>75%) are listed as Critically Endangered or Endangered.

In 2016, IUCN uplisted the western chimpanzee, Pan troglodytes verus, from “Endangered” to “Critically Endangered”, reflecting the subspecies’ increasingly dire conservation status. Of the four recognised chimpanzee subspecies, Pan troglodytes verus is under the greatest threat. The current plan presents the status and threats to P. t. verus, based on expert evaluation of the best scientific knowledge available to date.

En 2016, l’UICN a requalifié le statut de conservation du chimpanzé d’Afrique de l’Ouest, Pan troglodytes verus, qui est passé de la catégorie « en danger » à la catégorie « en danger critique d’extinction », reflétant ainsi la situation désastreuse de cette sous-espèce. Parmi les quatre sous-espèces reconnues de chimpanzés, Pan troglodytes verus est la plus menacée. Ce plan présente le statut de conservation de P. t.

Here we report on the ninth iteration of the biennial listing of a consensus of the 25 primate species considered to be among the most endangered worldwide and the most in need of conservation measures. The 2016–2018 list of the world’s 25 most endangered primates has five species from Africa, six from Madagascar, nine from Asia, and five from the Neotropics. 

Kombinasi ancaman yang saat ini dihadapi kera besar yang tersisa membutuhkan tindakan konservasi yang segera di semua bidang - dari inisiatif di tingkat lapangan, melalui strategi nasional dan regional, hingga ke konvensi dan rencana aksi internasional. Dokumen ini menguraikan pendekatan saat ini untuk survei dan pemantauan kera besar bagi para ahli biologi lapangan, para manajer kawasan lindung, departemen satwa liar pemerintah dan masyarakat konservasi pada umumnya.

Re-introduction is one tool for conserving great apes and their natural habitats. These guidelines adapt other IUCN documents to pertain specifically to the re-introduction of great apes.