Final answer:
Strepsirhines are a suborder of primates that possess unique traits including a grooming claw and toothcomb. They are primarily found in the Old World, with Madagascar being home to five groups.
Step-by-step explanation:
Strepsirhines, also known as prosimians or wet-nosed primates, are a suborder of primates that includes lemurs and lorises. They possess several characteristic traits that distinguish them from other primates, such as a grooming claw on the second toe and a toothcomb formed by tightly packed lower incisors. Strepsirhines are primarily found in the Old World, with five groups exclusive to Madagascar.