Thylamys pallidior Thomas 1902
Thylamys pallidior Thomas 1902, Ann. Mag. Nat. Hist., ser. 7, 10: 161.
Type Locality: Bolivia, Oruro, "Challapata." .
Vernacular Names: White-bellied Fat-tailed Mouse Opossum.
Synonyms: Thylamys bruchi (Thomas 1921); Thylamys fenestrae (Marelli 1932); Thylamys pulchella (Cabrera 1934) .
Distribution: W and S Peru, N Chile, and S Bolivia as far south as Peninsula Valdéz, Argentina.
Conservation: IUCN – Lower Risk (lc).
Discussion: Identification of Peruvian and Chilean populations based on Solari (2003). Subspecies are not recognized here; needs revision.