After Lewontin tested the race concept by studying global genetic variation he concluded that most variation occcured across human populations regardless of their "racial" makeup therefor human "races" have no taxonomic significance.
Generalized Skeletal Structure - the bones that make up the shoulders, upper limbs, lower limbs, and other major joints like hands and feet are separate allowing flexibility when moving through trees. Enhanced Touch - they have an enhanced sense of touch, due to the presence of fingerprints and tow prints on the inside of their hands and feet for better gripping. Enhanced Vision - increased depth perception and seeing in color.
Prosimians- (Lorisiformes) lorises and galagos. (Tarsiiformes) tarsiers (Lemuriformes) lemurs. Lenmurs are found on the Island of Madagascar. Lorises live in Africa and Southeast Asia, and galagos live in Africa. Tarsiers, live in Southeast Asia.
Apes have larger brains, broad faces and premolars with little occlusal surface relief. All have the canine premolar honing complex. None have an external tail. Monkeys have highly dexterous fingers, external tail.