Large rodent. Variable but upper parts generally dark reddish brown speckled with black. Fur short and dense. Flanks are paler brown to yellowish extending onto the limbs. Underside and inner legs whitish, pale yellow to dark yellow. Chin and throat pale. Limbs powerfully built, digits with blackish claws. Feet buffish yellow above. Hind feet haired except for naked soles. Muzzle distinct. Ears small, rounded, and pigmented, with dense whitish to yellowish hair. White patch behind ear present but not conspicuous. No white patch above eye. Tail rather short and stout, well covered with short hairs and with a conspicuous black tip.