This chinchilla rat was recorded near Uspallata, Argentina. The adult male holotype had a gray-brown back and whitish underside. Summer 2008 fieldwork recorded burrows in gaps among crumbling rocks.
The adult male holotype was grayish brown above, with the underside strongly washed with white. The tail was gray above and immaculate white below. The original diagnosis also describes the hind feet and ears as large relative to body size.
The 2011 paper reports one animal captured at Uspallata in summer 2008. Burrows occupied crevices on hillsides of crumbling rock blocks or flagstones, near Stipa grasses, Larrea divaricata, Atriplex lampa and cacti.
An extinction-risk assessment has not been added yet.