| 1. | Gestation in the Old World monkeys lasts between five and seven months.
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| 2. | The divergence of Old World monkeys and apes has been dated to to.
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| 3. | Asian Old World monkey malaria parasite species infect both colobine and macaque monkeys.
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| 4. | The three types are : Old World monkeys, New World monkeys and Apes.
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| 5. | These colobine Old World monkeys, native to Southeast Asia, have an extremely striking appearance.
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| 6. | Hanuman langurs ( or gray langurs ) are an Old World monkey found in India.
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| 7. | However, even among primates, full color vision differs between New World and Old World monkeys.
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| 8. | Unlike the other subfamily of Old World monkeys, the Cercopithecinae, they possess no cheek pouches.
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| 9. | This Old World monkey is diurnal and spends most of the day in the trees.
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| 10. | Old World monkeys and Hominoidea emerged within the catarrhine monkeys some 25 millions years ago.
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