Order Rodentia - Family Ctenomyidae 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 1560 1570 book chapter 0-8018-8221-4 10.5281/zenodo.7316535 Ctenomys viperinus Thomas 1926 Ctenomys viperinus Thomas 1926 , Ann. Mag. Nat. Hist., ser. 9, 17: 605 . Type Locality: Argentina , Tucuman Prov. , Vipos, tableland above Ñorco. Vernacular Names: Vipos Tuco-tuco . Distribution: N Tucuman Prov. ( Argentina ). Discussion: Cabrera (1961) considered viperinus synonymous with knighti but Galliari et al. (1996) listed it as a distinct species.