Ctenomys johannis Thomas 1921
Ctenomys johannis Thomas 1921, Ann. Mag. Nat. Hist., ser. 9, 7: 523.
Type Locality: Argentina, San Juan Prov., CaƱada Honda, 600 m.
Vernacular Names: San Juan Tuco-tuco.
Distribution: S San Juan Prov., Argentina.
Discussion: Originally described as a subspecies of coludo by Thomas (1921) but Cabrera (1961) and Woods (1993) included coludo and johannis in fulvus . Contreras et al. (1977) considered these forms provisionally distinct and Nowak (1999) and Galliari et al. (1996) considered johannis a distinct species. Contreras et al. (1977) corrected the elevation of the type locality to 600 m and suggested a close relationship with validus .