Pitheciine Action Group
Pithecine Taxonomy and Geographic Distribution
Silva Júnior, J.S. & W.B. Figueiredo
The pitheciine group of seed predators is composed of three genera:
Pithecia, Chiropotes and Cacajao, all with essentially Amazonian
geographic distributions. Chiropotes and Cacajao are mutually exclusive
but Pithecia is widely sympatric with both. Parapatric distribution
patterns are most common for taxa from these genera, except in a few
forms of Cacajao, which exhibit apparent allopatric or disjointed
distributions. The genus Pithecia is composed of eight terminal taxa,
divided into two groups of species. Five valid species, three of them
composed of two subspecies, are currently recognized. Pithecia has an
ample distribution, being absent only from northwestern Amazonia and
the region located to the south of the Amazon river and east of the river
Xingu. The genus Chiropotes is composed of five species. This genus
occurs throughout eastern Amazonia, east of the rivers Orinoco-Negro
and Madeira. The genus Cacajao comprises six taxa, and occurs in the
flooded forests of western Amazonia. Two species of Cacajao are
recognized, one comprises two subspecies, and the other four.
Assessment of the diversity and geographic distribution of this group is
hindered by undersampling and misinterpretation of species and
subspecies concepts. Chiropotes is the only genus that has been revised
in recent years using multidisciplinary techniques. Revisions for Pithecia
and Cacajao date back almost 20 years, both genera now require
systematic revisions using new samples and investigation methods.
Return to symposium programme
Silva Júnior, J.S. & W.B. Figueiredo
The pitheciine group of seed predators is composed of three genera:
Pithecia, Chiropotes and Cacajao, all with essentially Amazonian
geographic distributions. Chiropotes and Cacajao are mutually exclusive
but Pithecia is widely sympatric with both. Parapatric distribution
patterns are most common for taxa from these genera, except in a few
forms of Cacajao, which exhibit apparent allopatric or disjointed
distributions. The genus Pithecia is composed of eight terminal taxa,
divided into two groups of species. Five valid species, three of them
composed of two subspecies, are currently recognized. Pithecia has an
ample distribution, being absent only from northwestern Amazonia and
the region located to the south of the Amazon river and east of the river
Xingu. The genus Chiropotes is composed of five species. This genus
occurs throughout eastern Amazonia, east of the rivers Orinoco-Negro
and Madeira. The genus Cacajao comprises six taxa, and occurs in the
flooded forests of western Amazonia. Two species of Cacajao are
recognized, one comprises two subspecies, and the other four.
Assessment of the diversity and geographic distribution of this group is
hindered by undersampling and misinterpretation of species and
subspecies concepts. Chiropotes is the only genus that has been revised
in recent years using multidisciplinary techniques. Revisions for Pithecia
and Cacajao date back almost 20 years, both genera now require
systematic revisions using new samples and investigation methods.
Return to symposium programme
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SYMPOSIUM
Pitheciins: Ecology & Conservation
XXI Congress of the International Primatological Society
Pitheciins: Ecology & Conservation
XXI Congress of the International Primatological Society
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