Final answer:
The four major primate groups included in the Haplorhines are tarsiers, New World monkeys, Old World monkeys, and apes.
Step-by-step explanation:
Haplorhines are a suborder of primates that include a total of four major primate groups. These groups are:
- Tarsiers – These small primates have large eyes and are found in Southeast Asia. They are known for their unique ability to rotate their heads nearly 180 degrees.
- New World monkeys – These primates are found in Central and South America. They have a wide variety of adaptations for different diets and habitats.
- Old World monkeys – These primates are found in Africa, Asia, and Europe. They have features such as cheek pouches and tails that are not prehensile.
- Apes – This group includes orangutans, gorillas, chimpanzees, bonobos, and humans. Apes are characterized by large brains, long lifespans, and the ability to walk upright.