Final answer:
Lorises can be found in Southeast Asia including Vietnam, Laos, and China, while Galagos are native to Africa. They all belong to the Strepsirrhini suborder prevalent across the 'Old World,' which encompasses regions in Africa, Asia, and in some cases, Europe.
Step-by-step explanation:
Lorises and Galagos, also known as bush babies, are small, nocturnal primates part of the Strepsirrhini suborder which includes lemurs, lorises, and related species. Lorises, like the pygmy slow loris (Nycticebus pygmaeus), are found in parts of Southeast Asia, including Vietnam, Laos, and in a province of China. On the other hand, Galagos are indigenous to various regions of Africa. These primates exhibit distinctive biological traits such as a grooming claw on their second toe and tightly packed incisors known as a toothcomb. While they share their Strepsirrhini categorization with residents of the island of Madagascar like lemurs, they are predominantly present in the continents of Africa and Asia which constitute the 'Old World.'