haplorhines
Haplorhines are a suborder of primates that includes the tarsiers and the anthropoids—namely the monkeys, apes, and humans. They are one of the two major suborders of primates, the other being the strepsirrhines (lemurs, lorises, and galagos). A key distinguishing feature of haplorhines is the dry nose without a rhinarium, in contrast to the moist, split-nose nose of many strepsirrhines. Haplorhines also exhibit a more complete postorbital closure around the eye and typically lack a tapetum lucidum, contributing to different visual adaptations. They generally have larger brains for their body size and reduced reliance on the sense of smell, with a greater emphasis on vision and complex social behavior. They also lack a dental comb, a primitive trait seen in some strepsirrhines.
Taxonomy within haplorhines is organized into two major groups: the infraorder Tarsiiformes, which contains the tarsiers,
Geographically, haplorhines are distributed across Africa, Asia, and the Americas, with tarsiers confined to Southeast Asia,