Medium-sized Monkeys

Red-eared Guenon

Species Name: Cercopithecus erythrotis
The red-eared guenon (Cercopithecus erythrotis), also called the russet-eared guenon or red-eared monkey is endemic to the tropical and subtropical lowland rainforests of Nigeria, Equatorial Guinea, and Cameroon.

Tantalus Monkey

Species Name: Chlorocebus tantalus
The tantalus monkey (Chlorocebus tantalus) is an Old World monkey endemic to Africa, ranging from Ghana to Sudan. It was initially described as a subspecies of Grivet (Chlorocebus aethiops). Tantalus monkeys are very similar to vervet monkeys but are smaller in size.

Olive Colobus

Species Name: Procolobus verus
The olive colobus (Procolobus verus), also called the Van Beneden's colobus or green colobus is a primate species in the Cercopithecidae family. It is the smallest specimen of all the Colobine monkeys. It is rarely seen in its natural habitat due to its secretive nature and cryptic coloration.

Lang’s Red Colobus

Species Name: Piliocolobus langi
Lang's red colobus (Piliocolobus langi) is another species of red colobus monkey. Historically, it was treated as a subspecies of the Central African red colobus (Piliocolobus foai). Still, more recent taxonomies generally treat it as a distinct species.

Saban Grizzled Langur

Species Name: Presbytis sabana
Saban Grizzled Langur was once thought to be a subspecies of the Hose's langur, Presbytis hosei (as Presbytis hosei sabana). The Saban grizzled langur is endemic to the island of Borneo in the Malaysian province of Sabah, with part of its range in Indonesia.

Pig-tailed Langur

Species Name: Simias concolor
The pig-tailed langur (Simias concolor), monotypic in the Simias genus, is a great Old-World monkey native to several small islands off Sumatra, Indonesia. Adult pig-tailed langurs have black faces and small, turned-up noses.

Mitered Langur

Species Name: Presbytis mitrata
The mitered langur has brown or gray fur on its back, darker, while it is even darker on its belly and the arms, legs, and tail. These Indonesian primates live in groups of 1 male with 5 to 17 females.

Miller’s Langur

Species Name: Presbytis canicrus
Miller's Langur (Presbytis canicrus), also called the Kutai Gray Langur, is the rarest of the four Hosei subspecies, all of which are native to the island of Borneo. One of the world's most endangered primates, Miller's langur, was once considered extinct until it was rediscovered in 2013.

Mentawai Langur

Species Name: Presbytis potenziani
Mentawai Langur is also called the Long-Tailed Langur, and it is native to the Mentawai Islands in Indonesia. The pelage of Mentawai langur is medium length, longer on the back of the shoulders and anterior of the flanks and shorter on the face, neck, abdomen, and under the thighs.

Laotian Langur

Species Name: Trachypithecus laotum
The Laotian langur (Trachypithecus laotum), also known as white-browed black langur, is another primate species that nest in small limestone caves and holes that shelter from predators, rain, and cold.

Hatinh Langur

Species Name: Trachypithecus hatinhensis
The Hatinh langur (Trachypithecus hatinhensis) is a critically endangered Old World monkey found in the limestone forests of Vietnam, particularly in Quảng Bình province. Contrary to their common name, the Hatinh langur is not known from the province of Hà Tĩnh.

Germain’s Langur

Species Name: Trachypithecus germaini
Germain's Langur is a lutung species endemic to Thailand, Vietnam, Laos, Cambodia, and Burma. Germain's langur is a terrestrial tree-dwelling species occasionally found in lowlands.

Black and White Langur

Species Name: Presbytis bicolor
The black-and-white langur is a primate species in the Cercopithecidae family. It was formerly thought to be a subspecies of the Presbytis melalophos (black-crested Sumatran langur). Still, the genetic analysis indicated they were separate species.

Black Sumatran Langur

Species Name: Presbytis sumatrana
The black Sumatran langur is a species of monkey in the Cercopithecidae family that is endemic to Indonesia's Sumatra Island. Presbytis sumatrana was once considered a subspecies of Sumatran Surili. Still, genetic analysis has shown it to be a distinct species.

Indochinese Black Langur

Species Name: Trachypithecus ebenus
The Indochinese black langur (Trachypithecus selbstus) is a little-known Lutung endemic to Laos and neighboring Vietnam. Because they live in dense forests and rarely venture outside, observing them in the wild can be difficult.

Wolf’s Mona Monkey

Species Name: Cercopithecus wolfi
The Wolf's mona monkey (Cercopithecus wolfi), also called the wolf monkey, is a colorful Old-World monkey in the Cercopithecidae family. Wolf's mona monkeys have huge cheek pouches.

Vervet Monkey

Species Name: Chlorocebus pygerythrus
The vervet monkey (Chlorocebus pygerythrus) is an Old World monkey of the Cercopithecidae family endemic to southern and eastern Africa. Not only can vervet monkeys skilfully navigate through the treetops, but they can also swim.

Schmidt’s Red-tailed Monkey

Species Name: Cercopithecus ascanius
The Schmidt's red-tailed monkey, also called the red-tailed guenon, Schmidt's guenon, or black-cheeked white-nosed monkey is a primate species in the Cercopithecidae family. The Schmidt's red-tailed monkey is named for its red coloration on the underside of its tail, as well as the bicolor coloration of its tail as the reddish color increases from the base to the tip.

Pagai Island Macaque

Species Name: Macaca pagensis
The Pagai island macaque (Macaca pagensis), also called the Pagai or Bokkoi macaque is an Old-World monkey native to the Mentawai Islands on the west coast of Sumatra. Groups of Pagai Island macaques consist of approximately 5 to 25 individuals.

Heck’s Macaque

Species Name: Macaca hecki
The Heck's Macaque (Macaca hecki) is a macaque native to Sulawesi, Indonesia. This Old-World monkey is diurnal. Due to their frugivorous diet, Heck's macaques will likely act as seed dispersers throughout their habitat.

Gorontalo Macaque

Species Name: Macaca nigrescens
The Gorontalo macaque (Macaca nigrescens), also called the Dumoga-bone macaque, is a species of the primate of the Cercopithecidae family. It is native to the Sulawesi Island of Indonesia.

Booted Macaque

Species Name: Macaca ochreata
The booted macaque is a macaque native to Indonesia's Sulawesi Island. This Old-World monkey is diurnal, spending most of the day in trees. A booted macaque monkey's body mass is determined by its sex, with males significantly larger than females.

Toque Macaque

Species Name: Macaca sinica
The toque macaque (Macaca sinica) is a red-brown Old World monkey endemic to Sri Lanka, known as the rilewa or rilawa. Its common name refers to the strand of hair on its head that resembles a brimless hat.

Sunda Pig-Tailed Macaque

Species Name: Macaca nemestrina
The pig-tailed macaque (Macaca nemestrina), also called the Sundaland pig-tailed macaque and Sunda pig-tailed macaque is a medium-sized macaque native to southern Thailand, Indonesia, and Malaysia. Pig-tailed macaques also have long legs and hairless snouts.

Selangor Silvered Langur

Species Name: Trachypithecus selangorensis
The Selangor silvered langur (Trachypithecus selangorensis) is a leaf monkey living on the west coast of the Malay Peninsula. Like most leaf monkeys, the Selangor silvered langur usually lives in groups of a single adult male and several adult females and their young offspring.

Popa Langur

Species Name: Trachypithecus popa
Popa langur (Trachypithecus popa) is a primate species in the Cercopithecidae family. It occurs exclusively in Myanmar. The species is named after Mount Popa, where a population of 100 monkeys lives.

Cat Ba Langur

Species Name: Trachypithecus poliocephalus
The white-headed langur, also called the Cat Ba langur, is an endangered species of langur native to Guangxi, China. Cat Ba langurs are comfortable in trees or ground but prefer steep cliffs where humans can't set foot.

Tenasserim Langur

Species Name: Trachypithecus barbei
Tenasserim lutung (Trachypithecus barbei) is a species of lutung. It occurs in Thailand and Myanmar. The species derived its common name from the Tenasserim Hills.

Siberut Langur

Species Name: Presbytis siberu
Siberut langurs are native to the islands of North Pagai, South Pagai, and Sipora. Siberut langurs spend over 80 percent of their time resting and foraging and only a tiny portion traveling and socializing.

Silvered Langur

Species Name: Trachypithecus cristatus
The silvery Lutung (Trachypithecus cristatus), also called the silvery langur or silvered leaf monkey is an Old-World monkey. Silvery Lutungs primarily live in trees.

Northern Pig-tailed Macaque

Species Name: Macaca leonina
The northern pig-tailed macaque (Macaca leonina) is a macaque species in the Cercopithecidae family. Typical of this group of Old World monkeys, northern pig-tailed monkeys are gregarious, living in social groups of 9-81 individuals.

Spix’s Night Monkey

Species Name: Aotus vociferans
The Spix's night monkey (Aotus vociferans), also called the Spix's owl monkey, Colombian gray nocturnal monkey, and noisy night monkey is a species of night monkey native to South America.

Napo Saki

Species Name: Pithecia napensis
The Napo saki (Pithecia napensis), also called the Napo monk saki, is a species of saki monkey, a type of New World monkey. The species' common name is derived from the Napo River in its locality.

Moustached Guenon

Species Name: Cercopithecus cephus
The mustached monkey or moustached guenon (Cercopithecus cephus) is a primate species in the Cercopithecidae family. Moustached monkeys take regular paths through the branches, with each monkey following the next along the same path.

Moor Macaque

Species Name: Macaca maura
The moor macaque (Macaca maura) is a brown/black haired macaque with a pale rump and bare pink rump skin. Moor macaques appear to be a relatively tolerant macaque species, showing low levels of aggression between group members.

Maroon Langur

Species Name: Presbytis rubicunda
Endemic to the jungles of Borneo in Indonesia and Malaysia, red leaf monkeys get their name from their shaggy reddish-maroon fur. They are also known as maroon-leaf monkeys and maroon langurs.

Malbrouck

Species Name: Chlorocebus cynosuros
The Malbrouck (Chlorocebus cynosuros) is an Old-World primate from Africa that belongs to the Chlorocebus genus. The species is sometimes classified as a subspecies of the green monkey (Chlorocebus pygerythrus) or the common grivet (Chlorocebus aethiops).

Japanese Macaque

Species Name: Macaca fuscata
The Japanese macaque (Macaca fuscata), also called the snow monkey, is a terrestrial Old World species of monkeys endemic to Japan. Japanese macaques from southern regions generally weigh less than those in northern regions of higher altitudes, where there is more snow during the winter months.

Humboldt’s White Capuchin

Species Name: Cebus albifrons
Humboldt's white capuchins, also known as white-fronted capuchins, are a species of New-World monkeys and one of the smallest capuchin groups. Humboldt’s squirrel monkeys are usually led by a dominant male and female.

Humboldt’s Squirrel Monkey

Species Name: Saimiri cassiquiarensis
Humboldt's squirrel monkey (Saimiri cassiquiarensis) is a species of squirrel monkey found in South America's tropical rainforests, except for the coastal forests of southeastern Brazil.

Humboldt’s Night Monkey

Species Name: Aotus trivirgatus
The three-striped night monkey (Aotus trivirgatus), also known as the northern owl monkey, Humboldt's Night Monkey, or northern night monkey, is one of several currently recognized species of owl monkeys.

Hooded Capuchin

Species Name: Sapajus cay
The Azaras capuchin or hooded capuchin (Sapajus cay) is a robust capuchin species. It is found in northern Argentina, southeastern Bolivia, eastern Paraguay, and Brazil. Its habitat consists of humid, subtropical, semi-deciduous, gallery forests and forests in the Pantanales.

Guianan Saki

Species Name: Pithecia pithecia
The white-faced saki (Pithecia pithecia), also known as the golden-faced saki, Guianan saki, and Guyana saki, is a New World saki monkey species. Typically, they have a lifespan of around 14 years in the wild and have lived up to 36 years in captivity.

Guianan Brown Capuchin

Species Name: Sapajus apella
The tufted capuchin (Sapajus apella), also called the pin monkey, Guianan brown capuchin, or black-headed capuchin is a New World monkey native to South America and the Caribbean islands of Margarita and Trinidad.

Grivet Monkey

Species Name: Chlorocebus aethiops
The Grivet monkey (Chlorocebus aethiops) is an Old World monkey with long tufts of white fur on the sides of its face. Grivet monkeys are very social animals. They travel in small groups and are among the few species to have groups with multiple males.

Green Monkey

Species Name: Chlorocebus sabaeus
The green monkey (Chlorocebus sabaeus), also called the sabaeus monkey, is an Old World monkey with golden-green fur, pale feet, and hands. Green monkeys' locomotion varies little, regardless of substrate or habitat. In nearly all circumstances, they move quadrupedally in the treetops or on the ground.

Golden-Bellied Capuchin

Species Name: Sapajus xanthosternos
The golden-bellied capuchin (Sapajus xanthosternos), also called the buff-headed or yellow-breasted capuchin is a New World monkey species. They spend much time grooming one another for socialization, with the alpha species receiving the most attention.
Orange Monkeys

Golden Lion Tamarin

Species Name: Leontopithecus rosalia
The golden lion tamarin (Leontopithecus rosalia), also called the golden tamarin, is a small New World primate in the Callitrichidae family. The golden lion tamarin derives its name from its vivid reddish-orange coat and extra-long hair around its face and ears, giving it a distinctive mane.

Geoffroy’s Monk Saki

Species Name: Pithecia monachus
Geoffroy's monk saki, also called monk saki, is a species of saki monkey, a New-World primate native to South America. A monk saki is one of seven species of New-World arboreal monkeys with a bushy, feathery tail.

Gabon Talapoin

Species Name: Miopithecus ogouensis
The Gabon talapoin, also called the northern talapoin, is a small species of African primate endemic to riverine habitats in Gabon, Equatorial Guinea, Cameroon, the far western Democratic Republic of the Congo, and the western Republic of the Congo.

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