Subspecies and Distribution. R.a.auritusG.Fischer,1814—CEArgentina. R.a.cuniculoidesWaterhouse,1837—SArgentinaandadjacentChile. R. a. flammarum Thomas, 1912 — Tierra del Fuego (extreme S Argentina and Chile); there is an unconfirmed record from the FalklandsIs. in Cricetidae

Subspecies and Distribution. R.a.auritusG.Fischer,1814—CEArgentina. R.a.cuniculoidesWaterhouse,1837—SArgentinaandadjacentChile. R. a. flammarum Thomas, 1912 — Tierra del Fuego (extreme S Argentina and Chile); there is an unconfirmed record from the FalklandsIs.Published as part of Don E. Wilson, Russell A. Mittermeier & Thomas E. Lacher, Jr, 2017, Cricetidae, pp. 204-535 in Handbook of the Mammals of the World – Volume 7 Rodents II, Barcelona :Lynx Edicions on page 413, DOI: 10.5281/zenodo.670714