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A primary distinction between red-necked and gray-necked night monkeys is spatial distribution. Gray-necked night monkeys (Aotus lemurinus group) are found north of the Amazon River, while the red-necked group (Aotus azare group) are localized south of the Amazon River. [11]
Night monkeys (Aotus), also known as owl monkeys, are New World primates found across Central and South America, ranging from Panama to northern Argentina. Belonging to the family Aotidae, they are characterized by their nocturnal lifestyle and distinctive owl-like appearance.
Azara’s night monkeys, also called Azara’s owl monkeys and southern night monkeys, are endemic to the Gran Chaco region of South America—a large area including many diverse ecosystems, from grasslands to savannas to xeric thorn forests and gallery forests.
Aotus trivirgatus is the only nocturnal primate of the neotropics [See comments below]. They have the largest olfactory bulbs and accessory olfactory bulbs of all the New World monkeys presumably due to their reliance on smell during nocturnal activity. They also have large brown/orange eyes.
The three-striped night monkey (Aotus trivirgatus ), also known as northern night monkey or northern owl monkey, is one of several species of owl monkeys currently recognised. It is found in Venezuela and north-central Brazil.
Night monkeys are found in southern Central America through South America as far south as Bolivia, northeastern Argentina, and Paraguay. The genus Aotus is the second most widely distributed New World monkey genus, with howler monkeys being more widely distributed. (Cawthon Lang and Fernandez-Duque, 2005; Martin, 2004; Nowak, 1991)
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Photos of Andean Night Monkey Aotus miconax. Filter by Place. Order by: Faves. Photo Licensing: Any. Quality Grade: Research.
