An Annotated Checklist Of Recent Opossums (Mammalia: Didelphidae) Author Voss, Robert S. text Bulletin of the American Museum of Natural History 2022 2022-04-04 2022 455 1 77 https://bioone.org/journals/bulletin-of-the-american-museum-of-natural-history/volume-455/issue-1/0003-0090.455.1.1/An-Annotated-Checklist-of-Recent-Opossums-Mammalia-Didelphidae/10.1206/0003-0090.455.1.1.full journal article 10.1206/0003-0090.455.1.1 0003-0090 Monodelphis ( Mygalodelphys ) ronaldi Solari, 2004 TYPE MATERIAL AND TYPE LOCALITY: MUSM 17027 , the holotype by original designation, consists of the skin and skull of an old adult male collected at Pakitza ( 11.93° S , 71.28° W ; 356 m ) on the left bank of the Río Manu , Madre de Dios department, Peru . SYNONYMS: None. DISTRIBUTION: Monodelphis ronaldi is currently known from only two localities in the Amazonian lowlands of eastern Peru ( Madre de Dios , Ucayali ) and one locality in western Brazil (Amazonas) (Ruelas and Pacheco, 2022). REMARKS: For an emended description, illustrations, tabulated measurement data, and comparisons with closely related congeners see Ruelas and Pacheco (2022). The same authors reported phylogenetic analyses of mtDNA sequence data that convincingly resolved Monodelphis ronaldi as the sister taxon of M. handleyi , and they reidentified as M. ronaldi the western Brazilian specimen that Bezerra et al. (2019) had previously reported as M. handleyi .