Ctenomys dorsalis Thomas 1900
Ctenomys dorsalis Thomas 1900, Ann. Mag. Nat. Hist., ser. 7, 6: 385.
Type Locality: Paraguay, Boqueron Prov., N Chaco.
Vernacular Names: Black-backed Tuco-tuco.
Distribution: Paraguay, west of the River of Paraguay in the N Chaco.
Conservation: IUCN – Lower Risk (lc).
Discussion: The dubious taxonomic history of this taxon was discussed by Contreras and Roig (1991).