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Pennant's colobus
Pennant's colobus or Pennant's red colobus (''Procolobus pennantii'') is a species of tree-dwelling primate in the family Cercopithecidae. It is endemic to tropical Central Africa. Three subspecies have traditionally been recognised but its distribution is peculiarly disjunct and has been considered a biogeographical puzzle. with one population on the island of Bioko (Equatorial Guinea), a second in the Niger River Delta in southern Nigeria, and a third in east-central Republic of Congo.〔 It is found in rainforests and marshy forests. It is threatened by habitat loss and hunting for bushmeat. One subspecies, ''bouvieri'', is rated as Critically Endangered; although it was last photographically documented in 2015, it may be on the brink of extinction.〔(Pennant's red colobus ). ARKive. Accessed 2013-09-03〕〔(【引用サイトリンク】title=Rare monkey photographed in Congo's newest national park, Ntokou-Pikounda )〕
==Taxonomy and etymology==
Pennant's colobus was first described in 1838 by George Robert Waterhouse, curator at the Zoological Society of London's museum, and was named in honour of the naturalist and traveller Thomas Pennant.
Three subspecies of this red colobus are traditionally recognized:〔 The Bioko red colobus (''Procolobus pennantii pennantii''), the Niger Delta red colobus (''Procolobus pennantii epieni'') and Bouvier's red colobus (''Procolobus pennantii bouvieri''). However, Groves (2007) raised ''P. p. epieni'', and ''P. p. bouvieri'' to ''Piliocolobus epieni'' and ''Piliocolobus bouvieri'', respectively (this nomenclature has been followed here). Ting agreed that preliminary genetic evidence supported elevating ''P. epieni'' at least.〔
The word "colobus" comes from Greek ''ekolobóse'', meaning "he cut short", and is so named because of the significant reduction in size, or complete lack of an opposable thumb in comparison to other primates.〔(Colobus Monkey ). American Wildlife Foundation.〕 To make up for this, they have four long digits that align to form a strong hook, allowing them to easily grasp branches and climb.〔Jorgensen, Matthew. (2009). "Behavioral Application in Wildlife Photography: Developing a Foundation in Ecological and Behavioral Characteristics of the Zanzibar red colobus Monkey (''Procolobus kirkii'') as it Apples to the Development Exhibition Photography". SIT – Zanzibar Coastal Ecology and Natural Resource Management.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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