The Sooty Mangabey (Cercocebus atys), also called the White-collared Mangabey, is an Old World monkey of Guinea Bissau, Gabon, and Cameroon. It has social groups of anywhere from four to twelve individuals. It is believed that a strain of the Simian Immunodeficiency Virus (SIV) jumped from this species to humans to become the HIV-2 virus. The HIV-1 strain came from the Common Chimpanzee strain of SIV.

There are two subspecies of this mangabey:

• ''Cercocebus atys atys
• ''Cercocebus atys lunulatus

References

External link

• Sooty Mangabey

Wildlife of Africa | Old World monkeys