|
Trachypithecus
''Trachypithecus'' (derived from Greek , meaning "rough" and , meaning "monkey") is a genus of Old World monkeys containing species known as lutungs, langurs, or leaf monkeys. Their range is much of Southeast Asia (northeast India, Vietnam, southern China, Borneo, Thailand, Java, and Bali). The name "lutung" comes from the Sundanese language meaning "blackness", ultimately from Proto-Austronesian *''luCuŋ'' (which originally referred to the Formosan rock macaque); it is preferred in one paper because the authors wanted the name langurs to only refer to monkeys in the genus '' Semnopithecus'', although some "lutungs" are now "langurs" again. Evolution Genetic analysis indicates that the ancestors of the modern species of lutung first differentiated from one another a little over 3 million years ago, during the late Pliocene. The various species alive today then diverged during the Pleistocene, presumably driven by habitat changes during the Ice Ages. The oldest fossils ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trachypithecus Cristatus Robustus
''Trachypithecus'' (derived from Greek , meaning "rough" and , meaning "monkey") is a genus of Old World monkeys containing species known as lutungs, langurs, or leaf monkeys. Their range is much of Southeast Asia (northeast India, Vietnam, southern China, Borneo, Thailand, Java, and Bali). The name "lutung" comes from the Sundanese language meaning "blackness", ultimately from Proto-Austronesian *''luCuŋ'' (which originally referred to the Formosan rock macaque); it is preferred in one paper because the authors wanted the name langurs to only refer to monkeys in the genus ''Semnopithecus'', although some "lutungs" are now "langurs" again. Evolution Genetic analysis indicates that the ancestors of the modern species of lutung first differentiated from one another a little over 3 million years ago, during the late Pliocene. The various species alive today then diverged during the Pleistocene, presumably driven by habitat changes during the Ice Ages. The oldest fossils clea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indochinese Lutung
Germain's langur (''Trachypithecus germaini'') is an Old World monkey native to Thailand, Myanmar, Cambodia, Laos and Vietnam. The monkey was previously included in '' Trachypithecus cristatus'' and '' Trachypithecus villosus''. Two subspecies were recognized: *''Trachypithecus germaini germaini'' *''Trachypithecus germaini caudalis'' Taxonomy and evolution Germain's langur is part of the leaf monkey subfamily Colobinae. Two subspecies of the Germain's langur are recognized: ''Trachypithecus germaini germaini'' and ''Trachypithecus germaini caudalis.'' However, the classification of the Germain's langur has been contested, with ''T. germaini'' being grouped with other species in its subfamily. ''T. germaini'' and '' T. margarita'' were considered to be a single species, ''T. villosus,'' but morphological and genetic evidence has shown that they are distinct. ''T. germaini'' has also been grouped with '' T. cristatus'' until recent reclassifications. ''Trachypithecus germaini'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dusky Leaf Monkey
The dusky leaf monkey (''Trachypithecus obscurus''), also known as the spectacled langur or the spectacled leaf monkey, is a species of primate in the family Cercopithecidae. It is found in Peninsular Malaysia, Myanmar and Thailand, and can occasionally be found in Singapore. During the day, these small, Folivore, folivorous primates divide in sub-groups and forage for vegetation and fruit throughout the tropical forests. According to the International Union for Conservation of Nature, IUCN, the dusky leaf monkey's population is declining due to habitat loss, poaching, and anthropogenic land use, which prompted the IUCN to classify the species as Endangered species, endangered in 2015. Taxonomy Within the Cercopithecidae family, the dusky leaf monkey is a member of the genus ''Trachypithecus''. Although most researchers agree with this classification, others believe that this primate should be categorized under the genus ''Presbytis.'' Subspecies Researchers have also dispute ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silvery Lutung
The silvery lutung (''Trachypithecus cristatus''), also known as the silvered leaf monkey or the silvery langur, is an Old World monkey. It is arboreal, living in coastal, mangrove, and riverine forests in Sumatra, Borneo, Java, as well as in parts of the southwestern Malay Peninsula, the Natuna Islands, and other nearby islands. It is the type species of its species group. Description The silvery lutung is a medium-sized monkey with a long, non-prehensile tail. It has grey-tipped, dark brown or black fur, giving it a uniform silvery appearance. Unlike some related species, there are no paler markings on the face or body, except for a patch of whitish hair on the groin of females. A crest of fur runs along the top of the head, and the hair on the cheeks is long, often obscuring the ears. The hands and feet are hairless, with dark-coloured skin, and have opposable thumbs and toes. Females range from in head-body length, with an average weight of and a tail length of . Males are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Javan Lutung
The East Javan langur (''Trachypithecus auratus''), also known as the ebony lutung, Javan langur or Javan lutung, is an Old World monkey from the Colobinae subfamily. It is most commonly glossy black with a brownish tinge to its legs, sides, and " sideburns". It is found on the island of Java, as well as on several of the surrounding Indonesian islands. The Latin word ''auratus'' in its scientific name means "golden" and refers to a less common color variant. The common name golden langur refers to a different species. Description Like all langurs, this species' tail is noticeably long, measuring up to 98 cm in length while the body is only around 55 cm long. The two subspecies of this monkey are fairly similar in appearance and are geographically separated; males and females are both usually glossy black, although the females pale, yellowish-white patch around the pubic area. Juveniles of both subspecies are orange in color. The nominate subspecies ''Trachypithecus a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Semnopithecus Vetulus
The purple-faced langur (''Semnopithecus vetulus''), also known as the purple-faced leaf monkey, is a species of Old World monkey that is endemic to Sri Lanka. The animal is a long-tailed arboreal species, identified by a mostly brown appearance, dark face (with paler lower face) and a very shy nature. The species was once highly prevalent, found in suburban Colombo and the "wet zone" villages (areas with high temperatures and high humidity throughout the year, whilst rain deluges occur during the monsoon seasons), but rapid urbanization has led to a significant decrease in the population level of the monkeys. It had traditionally been classified within the genus ''Trachypithecus'' but was moved to the genus ''Semnopithecus'' based on DNA evidence indicating that is it more closely related to the gray langurs. In Sinhala, it is known as ශ්රී ලංකා කළු වඳුරා ʌlu vʌⁿðura(Sri Lanka black monkey). Description In the purple-faced langur, m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Semnopithecus Johnii
The Nilgiri langur (''Semnopithecus johnii'') is an Asian langur of the Old World monkey. It has glossy, black fur and an orangey-golden brown, hair-like mane on its head. Females have a white patch of fur on the inner thigh. It typically lives in troops of nine to ten individuals, with or without offspring, depending on seasonality. Its diet consists of fruits, shoots and leaves. It is listed as vulnerable on the IUCN Red List and is threatened by habitat destruction and poaching for its body parts, thought to supposedly contain aphrodisiac properties. Taxonomy and classification The classification of the Nilgiri langur has been disputed. Traditionally it has been placed within the genus ''Trachypithecus'' based on morphological similarities such as cranial morphology and neonatal pelage color, and within the ''Trachypithecus vetulus'' group within ''Trachypithecus'' based on a presumed close relationship with the purple-faced langur (''Semnopithecus vetulus''), which had fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Semnopithecus
''Semnopithecus'' is a genus of Old World monkeys native to the Indian subcontinent, with all species with the exception of two being commonly known as gray langurs. Traditionally only the species ''Semnopithecus entellus'' was recognized, but since about 2001 additional species have been recognized. The taxonomy has been in flux, but currently eight species are recognized. Members of the genus ''Semnopithecus'' are Terrestrial animal, terrestrial, inhabiting forest, open lightly wooded habitats, and urban areas on the Indian subcontinent. Most species are found at low to moderate altitudes, but the Nepal gray langur and Kashmir gray langur occur up to in the Himalayas. Characteristics These langurs are largely gray (some more yellowish), with a black face and ears. Externally, the various species mainly differ in the darkness of the hands and feet, the overall color and the presence or absence of a crest. Typically all north Indian gray langurs have their tail tips looping tow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Old World Monkey
Old World monkeys are primates in the family Cercopithecidae (). Twenty-four genera and 138 species are recognized, making it the largest primate family. Old World monkey genera include baboons (genus '' Papio''), red colobus (genus '' Piliocolobus''), and macaques (genus '' Macaca''). Common names for other Old World monkeys include the talapoin, guenon, colobus, douc (douc langur, genus '' Pygathrix''), vervet, gelada, mangabey (a group of genera), langur, mandrill, drill, surili ('' Presbytis''), patas, and proboscis monkey. Phylogenetically, they are more closely related to apes than to New World monkeys, with the Old World monkeys and apes diverging from a common ancestor between 25 million and 30 million years ago. This clade, containing the Old World monkeys and the apes, diverged from a common ancestor with the New World monkeys around 45 to 55 million years ago. The individual species of Old World monkey are more closely related to each other than to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomas Horsfield
Thomas Horsfield (May 12, 1773 – July 24, 1859) was an American physician and natural history, naturalist who worked extensively in Indonesia, describing numerous species of plants and animals from the region. He was later a curator of the East India Company Museum in London. Early life Horsfield was born in Bethlehem, Pennsylvania, and studied medicine at the University of Pennsylvania. He was the grandson of Timothy Horsfield, Sr. (1708-1773), who was born in Liverpool and emigrated to New York in 1725. The Horsfield family converted from the Church of England to Moravianism, a Protestant denomination with a strong emphasis on education. In 1748, he moved his family to Bethlehem, Pennsylvania and joined them the next year. Horsfield's father was Timothy Horsfield, Jr. and he married Juliana Sarah Parsons in 1738. Thomas Horsfield was born in Bethlehem on May 12, 1773. He was educated at the Moravian schools in Bethlehem and Nazareth, Pennsylvania, Nazareth. He studied medicin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
