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A revision of the didelphid marsupial genus Marmosa. Part 3, A new species from western Amazonia, with redescriptions of M. perplexa Anthony, 1922, and M. germana Thomas, 1904. (American Museum novitates, no. 3969)

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dc.contributor.author Voss, Robert S.
dc.contributor.author Giarla, Thomas C.
dc.date.accessioned 2021-04-01T15:43:54Z
dc.date.available 2021-04-01T15:43:54Z
dc.date.issued 2021-04-01
dc.identifier.uri http://digitallibrary.amnh.org/handle/2246/7262
dc.description 28 pages : illustrations (chiefly color), map ; 26 cm. en_US
dc.description.abstract We describe a new species of woolly mouse opossum from northwestern Amazonia, Marmosa jansae, based on museum specimens previously misidentified either as M. germana Thomas, 1904, or as M. regina Thomas, 1898. Instead of being closely related to either of those species, M. jansae appears to be the sister taxon of M. perplexa Anthony, 1922, a trans-Andean species previously synonymized with M. phaea Thomas, 1899. We redescribe M. perplexa, which inhabits critically endangered evergreen and semideciduous forests in southwestern Ecuador and northwestern Peru. We also redescribe M. germana, an Amazonian species that has long been synonymized with M. regina, but which molecular analyses now suggest is the sister taxon of a trans-Andean species complex that includes M. alstoni (Allen, 1900). These results substantially clarify the long-confused taxonomy of woolly mouse opossums (subgenus Micoureus), provide new examples of sister-group relationships between upper-Amazonian and trans-Andean taxa, and raise interesting questions about congeneric diversity in northwestern Amazonia, where as many as six species of Marmosa might occur sympatrically. en_US
dc.language.iso en_US en_US
dc.publisher New York, NY : American Museum of Natural History en_US
dc.relation.ispartofseries American Museum novitates;no. 3968.
dc.subject Marmosa jansae. en_US
dc.subject Marmosa -- Amazon River Valley -- Classification. en_US
dc.subject Opossums -- Amazon River Valley -- Classification. en_US
dc.subject Mammals -- Amazon river Valley -- Classification. en_US
dc.title A revision of the didelphid marsupial genus Marmosa. Part 3, A new species from western Amazonia, with redescriptions of M. perplexa Anthony, 1922, and M. germana Thomas, 1904. (American Museum novitates, no. 3969) en_US
dc.type Book en_US


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  • American Museum Novitates
    Novitates (Latin for "new acquaintances"), published continuously and numbered consecutively since 1921, are short papers that contain descriptions of new forms and reports in zoology, paleontology, and geology. New numbers are published at irregular intervals.

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