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 Tlacuatzin insularis (Merriam, 1898) TYPE MATERIAL AND TYPE LOCALITY: USNM 89215, the holotype by original designation, consists of the skin and skull of an adult male from Isla María Madre ( 21.58° N , 106.55° W ), Nayarit state , Mexico . SYNONYMS: None. DISTRIBUTION: Tlacuatzin insularis occurs in the Islas Marías (also known as the Tres Marias Islands) off the Pacific coast of Mexico ( Arcangeli et al., 2018 : fig. 3). REMARKS: A very brief morphological diagnosis and tabulated measurement data were provided by Arcangeli et al. (2018) , whose phylogenetic analyses of DNA sequence data suggest that Tlacuatzin insularis is the sister taxon of T. sinaloae .