Ctenomys argentinus Contrerras and Berry, 1982 . Historia Natural (Argentina), 2(20):166.

TYPE LOCALITY: Argentina, Chaco Prov., Libertador Gen. San Martin Dept., Campo Araos (26°31'S, 59°15'W) .

DISTRIBUTION: Argentina, NC Chaco Prov.

COMMENTS: The chromosome no. is 2n=44.