Thollon's red colobus (Piliocolobus tholloni), also known as the Tshuapa red colobus, is a species of red colobus monkey from the Democratic Republic of the Congo and lower Republic of the Congo. It is found south of Congo River and west of Lomami River. It had once been considered a subspecies of the P. badius. It was recognised as a distinct species by Dandelot in 1974, and this was followed by Groves in 2001, while others have suggested it should be considered a subspecies of P. rufomitratus.
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👉 Thollon's red colobus in the context of Red colobus
Red colobuses are Old World monkeys of the genus Piliocolobus. It was formerly considered a subgenus within the genus Procolobus, which is now restricted to the olive colobus. They are closely related to the black-and-white colobus monkeys (genus Colobus), and some species are often found in groups with the blue monkey. The western red colobus is frequently hunted by the common chimpanzee.
The members of this genus are found in western, central and eastern Africa, and the species have largely allo- or parapatric distributions. They are primarily arboreal and most are restricted to humid forests, but the Zanzibar red colobus prefers coastal thickets and scrub. Red colobuses are highly sensitive to hunting and habitat destruction, and have been referred to as probably the most threatened taxonomic group of primates in Africa. If following the taxonomic treatment advocated in Mammal Species of the World, all species except the Udzungwa, Semliki, Oustalet's and Thollon's red colobus monkeys (which are vulnerable) are assessed by the IUCN as endangered or critically endangered. Due to this sensitivity, it has been argued that they are indicator species for the health of Africa's tropical forests, leading researchers to urge that they be conserved as umbrella species.