| Sakis | |
|---|---|
 | |
| White-faced saki (Pithecia pithecia) | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Primates |
| Suborder: | Haplorhini |
| Infraorder: | Simiiformes |
| Family: | Pitheciidae |
| Subfamily: | Pitheciinae |
| Genus: | Pithecia Desmarest, 1804 |
| Type species | |
| Simia pithecia [1] Linnaeus, 1766 | |
| Species | |
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Sakis, or saki monkeys, are any of several New World monkeys of the genus Pithecia. [2] They are closely related to the bearded sakis of genus Chiropotes.
Sakis' range includes northern and central South America, extending from the south of Colombia, over Peru, in northern Bolivia, and into the central part of Brazil.
Sakis are small-sized monkeys with long, bushy tails. Their furry, rough skin is black, grey or reddish-brown in color depending upon the species. The faces of some species are naked, but their head is hooded with fur. Their bodies are adapted to life in the trees, with strong hind legs allowing them to make far jumps. Sakis reach a length of 30 to 50 cm, with a tail just as long, and weigh up to 2 kg.
Sakis are diurnal animals. They live in the trees of the rain forests and only occasionally go onto the land. They mostly move on all fours, sometimes running in an upright position on the hind legs over the branches, and sometimes jumping long distances. For sleeping they roll themselves cat-like in the branches. They are generally very shy, cautious animals. Sakis allow adult offspring and non-related immigrants into their groups unlike titi or owl monkeys. [3] Saki monkeys have been commonly considered to be socially monogamous, but generally only sakis who are pair-living exhibit social monogamy. [4] Females primarily carry infants and male-infant interactions are rare. [3]
Sakis are frugivores. Their diet consists of over 90% fruit and is supplemented by a small proportion of leaves, flowers, and insects. Sakis, as well as uakaris, engage in a specialized form of frugivory in which they focus specifically on unripe fruits and seeds.
Mating is non-seasonal, and can happen any time during the year. After approximately 150- to 180-day gestation, females bear single young. The young are weaned after 4 months, and are fully mature in 3 years. Their life expectancy is up to 30 years.
Uakari is the common name for the New World monkeys of the genus Cacajao. Both the English and scientific names are believed to have originated from indigenous languages.
The Pitheciidae are one of the five families of New World monkeys now recognised. Formerly, they were included in the family Atelidae. The family includes the titis, saki monkeys and uakaris. Most species are native to the Amazon region of Brazil, with some being found from Colombia in the north to Bolivia in the south.
Pitheciinae is a subfamily of the New World monkey family Pitheciidae. It contains three genera and 14 species. Pitheciines are forest dwellers from northern and central South America, east of the Andes.
The titis, or titi monkeys, are New World monkeys of the subfamily Callicebinae, which contains three extant genera: Cheracebus, Callicebus, and Plecturocebus. This subfamily also contains the extinct genera Miocallicebus, Homunculus, and Carlocebus.
The white-faced saki, called the Guianan saki and the golden-faced saki, is a species of the New World saki monkey. They can be found in Brazil, French Guiana, Guyana, Suriname and Venezuela. This species lives in the understory and lower canopy of the forest, feeding mostly on fruits, nuts, seeds, and insects. Although they are arboreal creatures and are specialists of swinging from tree to tree (brachiation), they are also terrestrial when foraging. White-faced sakis typically live around 14 years in their natural habitat and have been recorded to live up to 36 years in captivity. Sakis are active in the day and sleep highly elevated (15-20m) in trees with many leaves to shelter them from weather and flying predators.
The white-eared titi monkey also known as the Bolivian titi or Bolivian gray titi, is a species of titi monkey, a type of New World monkey, from eastern Bolivia and an area of western Brazil. The species has a range that extends east from the Manique River in Beni Department, Bolivia to southern Rondônia in Brazil. The southern end of its range includes forests around the city of Santa Cruz de la Sierra.
The Baptista Lake titi monkey is a species of titi monkey, a type of New World monkey, endemic to Brazil. It was originally described as Callicebus baptista in 1939.
The monk saki also known as Geoffroy's monk saki, is a species of saki monkey, a type of New World monkey, from South America. It is found in forested areas of northwestern Brazil and northeastern Peru.
The white-footed saki, buffy saki or white saki is a species of saki monkey, a type of New World monkey, endemic to western Brazil south of the Amazon.
The Rio Tapajós saki or Gray's bald-faced saki is a species of saki monkey, a type of New World monkey, from South America. It is found in parts of western Brazil, southeastern Colombia, southeastern Peru and possibly northern Bolivia.
The equatorial saki, also called the red-bearded saki, is a species of saki monkey, a type of New World monkey. It is found in northeastern Peru and Ecuador.
The golden-faced saki is a species of saki monkey, a type of New World monkey. It is found in Brazil north of the Amazon, on both sides of the Rio Negro. This species was formerly considered a subspecies of the white-faced saki, but was raised to full species status in 2014. The species is named for the coloration of the male, which has black body hair but orange or red-brown facial hair. The female has lighter body color and more bare skin on the face, with lines of orange hair extending down from below the eyes around the snout, as well as orange ventral fur. The golden-faced saki features a smaller, less prognathic, and less spherical cranial vault than the white-faced saki.
Miller's saki, also known as Miller's monk saki, is a species of saki monkey, a type of New World monkey. Its range includes parts of southwestern Colombia, northeastern Ecuador, and perhaps adjacent areas in Peru. This species was originally described as a species by J. A. Allen, demoted to a subspecies of the monk saki in 1987, and raised back to full species status in 2014. Confusion over the taxonomy of saki monkeys has arisen in part due to poorly labeled or mislabeled museum specimens. Males and females of this species, like those of other sakis, have differently colored pelage, with the females being more grayish in the face and overall, and the males a darker, grizzled black but with brown in the face and forearms.
The Napo saki, also known as the Napo monk saki, is a species of saki monkey, a type of New World monkey. Its range includes parts of eastern Ecuador and northern Peru. The name is derived from the Napo River in its locality. This species was originally described by Lönnberg as the subspecies Pithecia monachus napensis and has been treated as a synonym of P. monachus monachus. Hershkovitz retained it under P. monachus in 1987, but it was raised to full species status in 2014.
Vanzolini's bald-faced saki is a species of saki monkey, a type of New World monkey. Its range is in western Brazil. The monkey is named after Brazilian zoologist Paulo Vanzolini. This species was originally described by Hershkovitz as the subspecies Pithecia irrorata vanzolinii based on individuals collected in 1936 by Alfonso M. Olalla, but it was raised to full species status in 2014. For many years, there had been no record of the species in nature. Further specimens were collected in 1956 by Fernando Novaes and his assistant Miguel Moreira. The mammals in this expedition were collected alive and prepared as museum specimens, as described by Cory T. Carvalho, the mammalogist working at the Goeldi museum at the time.
Cazuza's saki is a species of saki monkey, a type of New World monkey. It is endemic to northwestern Brazil.
Mittermeier's Tapajós saki is a disputed species of saki monkey, a type of New World monkey. It is endemic to west-central Brazil.
Pissinatti's saki or Pissinatti's bald-faced saki is a disputed species of saki monkey, a type of New World monkey. It is endemic to Brazil.
Rylands' bald-faced saki is a disputed species of saki monkey, a type of New World monkey. It is found in Bolivia, Peru, and Brazil.
| Authority control databases: National |
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