Apes are the members of the hominoidea superfamily of primates, which includes humans. Under the current classification system there are two families of hominoids.The family hylobatidae consists of 4 genera and 13 species of gibbons, including the Lar Gibbon and the Siamang, collectively known as the "lesser apes".The family hominidae consisting of orangutans, gorillas, chimpanzees, and humans, collectively known as the "great apes".