Suborder Strepsirhini refers to a taxonomic suborder within the primate order, which includes various species commonly known as prosimians. The term "Strepsirhini" is derived from the Greek words "strepho," meaning "twist" or "bend," and "rhinos," meaning "nose." This suborder comprises two major groups: the lemurs of Madagascar and the lorisoids found in Africa and Asia.
Members of the suborder Strepsirhini are distinguished by certain anatomical features, notably their moist and highly sensitive noses, and they are considered more primitive than the other primates. These animals possess a specialized nasal structure called a rhinarium, which enhances their olfactory abilities. They also have a tapetum lucidum in their eyes, enabling better night vision.
In terms of physical characteristics, Strepsirhini primates typically have a smaller body size compared to other primate groups. They possess elongated snouts, large ears, and their dental formula usually consists of a combination of incisors, canines, premolars, and molars.
The lemurs, known for their diverse range of species, inhabit the island of Madagascar and neighboring islands. They exhibit varying size, colors, and habits, ranging from the small, diurnal mouse lemurs to the larger, nocturnal ring-tailed lemurs. On the other hand, lorisoids include various species such as lorises, galagos, and tarsiers, which are primarily found in tropical forests of Africa and Asia.
Overall, the suborder Strepsirhini represents a distinct group of primates characterized by their unique nasal structure, nocturnal behavior, and smaller body size compared to other primates, playing
