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Philippine tarsier (Carlito syrichta), one of the smallest primates. At a lower phylogenetic level, the tarsiers have, until recently, all been placed in the genus Tarsius, [1] while it was debated whether the species should be placed in two (a Sulawesi and a Philippine -western group) or three separate genera (Sulawesi, Philippine and western ...
Haplorhini. Haplorhini (/ hæpləˈraɪnaɪ /), the haplorhines (Greek for "simple-nosed") or the "dry-nosed" primates is a suborder of primates containing the tarsiers and the simians (Simiiformes or anthropoids), as sister of the Strepsirrhini ("moist-nosed"). The name is sometimes spelled Haplorrhini. [2] The simians include catarrhines (Old ...
Tarsiiformes / ˈtɑːrsi.ɪfɔːrmiːz / are a group of primates that once ranged across Europe, northern Africa, Asia, and North America, but whose extant species are all found in the islands of Southeast Asia. Tarsiers (family Tarsiidae) are the only living members of the infraorder; other members of Tarsiidae include the extinct Tarsius ...
Philippine tarsier climbing a tree. The tarsier is named for its elongated "tarsus" or ankle bone. [2]The genus Carlito is named after conservationist Carlito Pizarras. [3] The Philippine tarsier is known as mawumag in Cebuano and other Visayan languages, and magô in Waray, [4] [5] It is also known as mamag, magau, malmag, and magatilok-iok.
Pygmy tarsier. The pygmy tarsier (Tarsius pumilus), also known as the mountain tarsier or the lesser spectral tarsier, is a nocturnal primate found in central Sulawesi, Indonesia, in an area with lower vegetative species diversity than the lowland tropical forests. The pygmy tarsier was believed to have become extinct in the early 20th century.
Horsfield's tarsier. Horsfeld's tarsier ( Cephalopachus bancanus) is the only species of tarsier in the genus Cephalopachus. Named by American naturalist Thomas Horsfield, it is also referred to as western tarsier. The species occurs on Borneo, Sumatra and nearby islands and is, like other members of the group, entirely nocturnal.
Except in tarsiers, the nocturnal vision is further augmented by a reflective tapetum lucidum behind the retina, similar to that found in other nocturnal mammals. This layer reflects the light that passes through the retina, increasing the photoreceptors exposure to the light. It is however not well developed in diurnal forms like many lemurs.
The skeleton of a spectral tarsier, Tarsius spectrum. The spectral tarsier has a body weight of 200 grams, with a body length of 240 mm, a head body length of 80 mm, and a tail length of 160 mm. [7] When including Tarsius fuscus, females of the species weigh between 102 and 114 grams (3.6 and 4.0 oz) while males are 118 to 130 grams (4.2 to 4.6 oz).