Which primate suborder includes lemurs, lorises, and galagos?

Which primate suborder includes lemurs, lorises, and galagos? Strepsirrhini. This suborder contains the living lemuriform primates, including Madagascar’s lemurs and the lorises and galagos of Africa and Asia.

Strepsirrhines are commonly distinguished by their moist rhinarium, the hairless, highly sensitive area at the tip of the nose. Many also have a strong sense of smell, large olfactory regions, and a vomeronasal organ involved in detecting chemical signals. These features contrast with the generally drier noses and greater visual specialization associated with haplorhine primates.

Most living strepsirrhines are nocturnal, although several lemurs—including ring-tailed lemurs and indri—are active during the day. The group is not synonymous with “prosimians,” an older informal category that sometimes included tarsiers. Modern classifications place tarsiers with monkeys and apes in Haplorhini, while Strepsirrhini includes lemuriforms and, in some classifications, extinct adapiform relatives.