On the other hand, New World species are grouped as Neotropic and Nearctic. Old World monkeys (Cercopithecidae) are a group of simians native to Old World regions including Africa, India, and Southeast Asia.There are 133 species of Old World monkeys. The smallest Old World monkey is the talapoin, with a head and body 34–37 cm in length, and weighing between 0.7 and 1.3 kg. Lemurs of Madagascar, lorises, and galagos are not monkeys, they are Primates. Old World monkeys differ slightly from New World monkeys in several aspects. New World monkeys is a term given to monkeys found in South America, Central America and some parts of Mexico. They diverged from a common ancestor of New World monkeys around 55 million years ago. The Old World monkeys or Cercopithecidae are a group of primates which are native to Africa and Asia today.. Primates of the world also include Gibbon, Nomascus, Siamang,Diademed sifaka, Lemur, lorises and Tarsier. They are also known from Europe in the fossil record. They are divided into five categories: Pitheciidae, Aotidae, Atelidae, Callitrichadae, and … A (possibly introduced) free-roaming group of monkeys still survives in Gibraltar (Europe) to this day. Geographers at that time (16th century) thought of the world as being limited to Africa, Europe and Asia (the old world) but suddenly europeans discovered the americas, a new world to add on their map. For example, there are New World vultures, New World monkeys, and New World warblers. Biologists associate all species found exclusively in the Americas with the term New World. Such nomenclature is typically used for monkeys. ADVERTISEMENTS: Difference between New World Monkey and Old World Monkey are stated below: Related posts: Difference between Metatheria and Eutheria Notes on Arboreal (tree-dwelling) and Aerial (Volant or flying) Adaptations The story of the Clever Monkey 233 Words Essay on the Autobiography of a caged Monkey Short Moral story on The Monkey and the Crocodile Phylogenetically, they are more closely related to apes than to New World monkeys. The Old World species are found exclusively in Africa, Asia, and Europe. New World Monkeys vs Old World Monkeys. Members of this group include macaques, guenons, talapoins, lutungs, surilis, doucs, snub-nosed monkeys, probosci's monkey, and … Capuchin Monkey There are two major types of monkeys in the world, New World and Old World. New World Monkeys. The most prominent difference is the nose, which is the feature used most commonly to distinguish between the two groups. The Old World monkeys live in a range of environments from tropical rain forest to savanna, shrubland and mountainous terrain. The scientific name for the New World monkeys, Platyrrhini, means "flat nosed." Many New World monkeys in the family Atelidae, which includes howler monkeys, spider monkeys and woolly monkeys, have grasping tails often with a bare tactile pad.