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 7161371 Philander mcilhennyi Gardner and Patton, 1972 TYPE MATERIAL AND TYPE LOCALITY: LSUMZ 16395 , the holotype by original designation, consists of the skin and skull of an adult female collected at Balta ( 10.13° S , 17.22° W ; ca. 300 m ) on the Río Curanja , Ucayali (formerly Loreto ) department, Peru . SYNONYMS: None. DISTRIBUTION: Philander mcilhennyi occurs south of the Amazon in eastern Peru ( Huánuco , Loreto , Ucayali ) and western Brazil ( Acre , Amazonas) (Patton and da Silva, 2008: map 10). REMARKS: Philander mcilhennyi , originally described as a valid species, was treated as a subspecies of P. andersoni by Hershkovitz (1997) , but Patton and da Silva (2008) disagreed. Although P. andersoni and P. mcilhennyi 12 The type locality of Philander deltae is described differently in Lew et al.’s (2006) text (p. 227) and in their appendix (p. 235). The latter description is more easily understood and corresponds to the version given here. are not sister species, they are genuinely difficult to distinguish morphologically (Voss et al., 2018, 2019).