Order Primates Author Wilson, Don E. Author Reeder, DeeAnn text 2005 The Johns Hopkins University Press Baltimore Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 1 111 184 book chapter 0-8018-8221-4 10.5281/zenodo.7316519 Cercopithecus erythrotis subsp. erythrotis Waterhouse 1838 Cercopithecus erythrotis subsp. erythrotis Waterhouse 1838 , Proc. Zool. Soc. Lond., 1838: 59 . Type Locality: Equatorial Guinea , Bioko.