Thylamys (Thylamys) pallidior (Thomas, 1902)

Voss, Robert S., 2022, An Annotated Checklist Of Recent Opossums (Mammalia: Didelphidae), Bulletin of the American Museum of Natural History 2022 (455), pp. 1-77 : 54-55

Thylamys (Thylamys) pallidior (Thomas, 1902)

TYPE MATERIAL AND TYPE LOCALITY: BMNH 2.2 .2.116, the holotype by original designation, consists of the skin and skull of an adult male collected at Challapata (18.90° S, 66.78° W; 3800 m), Oruro department, Bolivia .

SYNONYMS: fenestrae Marelli, 1932.

DISTRIBUTION: Thylamys pallidior occurs along the arid Pacific coast of southern Peru and northern Chile (from ca. 16° S to 20° S); in the Altiplano of Peru, Bolivia, and Chile (to ca. 3800 m); and in arid landscapes on the eastern side of the Andes as far south as Chubut province, Argentina (ca. 46° S). No published map illustrates the entire geographic distribution of this widespread species, but Giarla et al. (2010: fig. 5) and Palma et al. (2014: fig. 1) mapped the localities of their sequenced specimens, and Formoso et al. (2011: fig. 1) mapped collection localities in Patagonia.

REMARKS: See Giarla et al. (2010) for an emended morphological description, measurements, and comparisons with congeneric taxa. The nominal taxon coquimbensis Tate, 1931, which Giarla et al. (2010) synonymized with Thylamys pallidior based on morphological similarity, was returned to the synonymy of T. elegans by Giarla and Voss (2020b) based on phylogenetic analysis of a cytochrome b sequence obtained from the holotype.