Equatorial saki

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Equatorial saki [1]
Pithecia aequatorialis 1775.jpg
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Primates
Suborder: Haplorhini
Infraorder: Simiiformes
Family: Pitheciidae
Genus: Pithecia
Species:
P. aequatorialis
Binomial name
Pithecia aequatorialis

The equatorial saki (Pithecia aequatorialis), 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. [3]

Contents

Not much is known about the equatorial saki, its range being specifically unknown. [4]

Description

The equatorial saki weighs between 2 - 2.5 kg, has a head-body length of 39 – 44 cm, and a tail length of 45 – 47 cm. The species' tail in not prehensile, relying on its arm and leg strength to carry itself from branch to branch. [5] The equatorial saki is also sexually dimorphic. It is often confused for the monk saki, but the reddish throat and chest of the equatorial saki set it apart. [6]

Ecology

The equatorial saki is diurnal. The species is frugivorous, but seeds and nuts constitute a large part of diet. This species also consumes leaves and insects, especially ants. The fruits that this species consumes have hard pericarps. [7] Most of its time is spent foraging in the middle to upper levels of the rainforest canopy. [6]

They seem to be found most commonly in riverside, seasonally flooded and swamp forests, but have been seen in terra firme forests as well. [6]

The red-bearded saki moves through the forest both quadrupedally and by leaping. When the red-bearded saki takes off from a tree branch, most likely it does this from a vertical clinging position. [7]

The equatorial saki lives in small groups of two to four that come together to form larger congregations. Groups of red-bearded sakis are described as closed social units. Males groom their young. [7]

Related Research Articles

<span class="mw-page-title-main">Pitheciidae</span> Family of mammals

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.

<span class="mw-page-title-main">Bearded saki</span> Genus of New World monkeys

The bearded sakis, or cuxiús are five or six species of New World monkeys, classified in the genus Chiropotes. They live in the eastern and central Amazon in South America, ranging through southern Venezuela, Guyana, Suriname, French Guiana and northern and central Brazil. The species are entirely allopatric, their distributions being separated by major rivers.

<span class="mw-page-title-main">Saki monkey</span> Genus of New World monkeys

Sakis, or saki monkeys, are any of several New World monkeys of the genus Pithecia. They are closely related to the bearded sakis of genus Chiropotes.

<span class="mw-page-title-main">Pitheciinae</span> Subfamily of New World monkeys

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.

<span class="mw-page-title-main">White-faced saki</span> Species of New World monkey

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.

<span class="mw-page-title-main">Monk saki</span> Species of New World monkey

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.

<span class="mw-page-title-main">White-footed saki</span> Species of New World monkey

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.

<span class="mw-page-title-main">Rio Tapajós saki</span> Species of New World monkey

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.

<span class="mw-page-title-main">Black bearded saki</span> Species of New World monkey

The black bearded saki is a species of New World monkey, native to the Amazon rainforest of South America, specifically to an area of north-eastern Brazil. It is one of five species of bearded saki. Bearded sakis are medium-sized (50 cm), mostly frugivorous primates, specialised in seed predation. The genus name Chiropotes means "hand-drinker" as they have been observed using their hands as ladles for scooping water into their mouths. This behavior is thought to be a way of maintaining and protecting their characteristic beards. The black bearded sakis habitat has undergone heavy habitat fragmentation, making the future conservation status of the species uncertain.

<span class="mw-page-title-main">Golden-faced saki</span> Species of New World monkey

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.

<span class="mw-page-title-main">Miller's saki</span> Species of South American monkey

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.

<span class="mw-page-title-main">Napo saki</span> Species of New World monkey

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.

<span class="mw-page-title-main">Vanzolini's bald-faced saki</span> Species of New World monkey

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.

<span class="mw-page-title-main">Hairy saki</span> Species of New World monkey

The hairy saki is a species of saki monkey, a type of New World monkey. It is found in northern Peru, southern Colombia, and a small portion of northwestern Brazil.

<span class="mw-page-title-main">Burnished saki</span> Species of New World monkey

The burnished saki is a species of saki monkey, a type of New World monkey. It is found in central Peru and a small portion of adjacent Brazil.

Isabel's saki is a species of saki monkey, a type of New World monkey. It is endemic to a small portion of northern Peru.

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.

References

  1. Groves, C. P. (2005). "Order Primates". In Wilson, D. E.; Reeder, D. M (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. p. 147. ISBN   978-0-8018-8221-0. OCLC   62265494.
  2. Marsh, L.K.; Heymann, E.W. (2018). "Pithecia aequatorialis". IUCN Red List of Threatened Species . 2018: e.T17402A17971831. doi: 10.2305/IUCN.UK.2018-2.RLTS.T17402A17971831.en . Retrieved 19 November 2021.
  3. Marsh, L. K. (July 2014). "A Taxonomic Revision of the Saki Monkeys, Pithecia Desmarest, 1804". Neotropical Primates. 21 (1): 1–165. doi:10.1896/044.021.0101. S2CID   86516301.
  4. "Equatorial Saki - Pithecia aequatorialis - Overview - Encyclopedia of Life". Encyclopedia of Life. Retrieved 2017-03-15.
  5. "Saki Ecuatorial (In Spanish)". Damsiela.com.
  6. 1 2 3 "Equatorial Saki Monkey". Project Noah. Retrieved 2017-03-15.
  7. 1 2 3 Flannery, Sean. "Red-bearded Saki (Pithecia aequatorialis)". www.theprimata.com. Retrieved 2017-03-15.