Tiamastus callens (Jordan & Rothschild, 1923)

NHM. Argentina—Río Negro: Pilcaniyeu. Mammalia—Rodentia—Ctenomyidae— Ctenomys mendocinus . Chile; Argentina—Río Negro: Lamarque, Pilcaniyeu. Mammalia—Rodentia—Ctenomyidae— Ctenomys mendocinus .