Order Rodentia - Family Muridae 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 2 1189 1531 book chapter 0-8018-8221-4 10.5281/zenodo.7316535 Hybomys (Hybomys) basilii Eisentraut 1965 Hybomys (Hybomys) basilii Eisentraut 1965 , Zool. Jahrb. Syst., 92: 20 . Type Locality: Equatorial Guinea , Bioko, Mocatal, 1200 m . Vernacular Names: Bioko Hybomys . Distribution: Endemic to Bioko. Conservation: IUCN – Lower Risk (nt). Discussion: Subgenus Hybomys . Originally described as a subspecies of H. univittatus , but raised to specific rank by Van der Straeten (1985) based on morphometric analyses contrasting it with samples identified as H. univittatus and H. lunaris ( Van der Straeten, 1985 ; Van der Straeten and Hutterer, 1986 ).