Foch’s Tuco-tuco is a rodent known from a very small area in Catamarca, Argentina. The known young male specimen had a notably dark muzzle and crown.
The young adult male holotype was dull buffy brown, paler underneath, with a nearly black muzzle and crown.
The collector recorded it as living in very dry red earth.
The young adult male holotype had a head-and-body length of 162 mm and a tail length of 76 mm.
An extinction-risk assessment has not been added yet.