Pig-tailed Macaque
The pig-tailed macaques are two macaque sister species. They appear similar and are best distinguished by their parapatric ranges: * Northern pig-tailed macaque (''Macaca leonina''), inhabiting Bangladesh to Vietnam, south to northern Malaysia * Southern pig-tailed macaque The southern pig-tailed macaque (''Macaca nemestrina''), also known as the Sundaland pig-tailed macaque and the Sunda pig-tailed macaque, is a medium-sized macaque that lives in Sundaland, southern Thailand, Malaysia, and Indonesia. It is known ...

Macaque
The macaques () constitute a genus (''Macaca'') of gregarious Old World monkeys of the subfamily Cercopithecinae. The 23 species of macaques inhabit ranges throughout Asia, North Africa, and Europe (in Gibraltar). Macaques are principally frugivorous (preferring fruit), although their diet also includes seeds, leaves, flowers, and tree bark. Some species such as the long-tailed macaque (''M. fascicularis''; also called the crab-eating macaque) will supplement their diets with small amounts of meat from shellfish, insects, and small mammals. On average, a southern pig-tailed macaque (''M. nemestrina'') in Malaysia eats about 70 large rats each year. All macaque social groups are arranged around dominant matriarchs. Macaques are found in a variety of habitats throughout the Asian continent and are highly adaptable. Certain species are synanthropic, having learned to live alongside humans, but they have become problematic in urban areas in Southeast Asia and are not suitabl ...
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Sister Species
In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree. Definition The expression is most easily illustrated by a cladogram: Taxon A and taxon B are sister groups to each other. Taxa A and B, together with any other extant or extinct descendants of their most recent common ancestor (MRCA), form a monophyletic group, the clade AB. Clade AB and taxon C are also sister groups. Taxa A, B, and C, together with all other descendants of their MRCA form the clade ABC. The whole clade ABC is itself a subtree of a larger tree which offers yet more sister group relationships, both among the leaves and among larger, more deeply rooted clades. The tree structure shown connects through its root to the rest of the universal tree of life. In cladistic standards, taxa A, B, and C may represent specimens, species, genera, or any other taxonomic units. If A and B are at the same taxonomic ...
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Northern Pig-tailed Macaque
The northern pig-tailed macaque (''Macaca leonina'') is a vulnerable species of macaque in the subfamily Cercopithecidae. It is found in Bangladesh, Cambodia, China, India, Laos, Myanmar, Thailand, and Vietnam. Traditionally, ''M. leonina'' was considered a subspecies of the southern pig-tailed macaque (''M. nemestrina''), but is now classified as an individual species. In the 21st century, the pig-tailed macaque was split into the northern pig-tailed macaque species ''Macaca leonina'' and the Sundaland pig-tailed macaque species ''M. nemestrina''. This reclassification was aided by the observation of sexual swellings and basic attributes that distinguish the two. The northern pig-tailed macaque is frugivorous and their social grouping is matriarchal, where sexual dimorphic traits can distinguish males and females. Their adaptation to omnivorous diets occur in periods of fruit scarcity, munching on wild vegetation and crops, human foods, and small insects and mammals. Despite thei ...
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