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Range DescriptionThis species is one of the most widespread sengis, occurring in forest, woodland, and thicket habitats in central and eastern Africa from the Democratic Republic of the Congo to northeastern South Africa. Although some generalized distribution maps for this species show the northern form, P. t. tordayi, crossing the Ubangi or Congo rivers into Congo, there is no indication that it actually occurs north of these rivers (Corbet and Neal 1965, Corbet and Hanks 1968). Although P. t. tetradactylus has been reported from the Caprivi Strip of Namibia, apparently there are no confirmed records. There are 10 named subspecies of P. tetradactylus, based only on subtle morphological traits and distribution. Some of these forms, such as P. t. sangi, may be threatened due to a highly restricted distribution and habitat destruction, but an updated taxonomic revision (based on molecular genetics as well as morphology and distribution) is needed to determine the validity of the current systematics.