Marmosa

{{Use dmy dates|date=September 2023}} {{Short description|Genus of marsupials}} {{Automatic taxobox | image = Marmosa robinsoni.jpg | image_caption = Robinson's mouse opossum (''Marmosa robinsoni'') | display_parents = 2 | taxon = Marmosa | authority = J. E. Gray, 1821 | type_species = ''Didelphis marina'' | type_species_authority = J. E. Gray, 1821 (incorrect spelling of ''Didelphis murina'' Linnaeus, 1758) | subdivision_ranks = Subgenera | subdivision = * ''Eomarmosa'' * ''Exulomarmosa'' * ''Marmosa'' * ''Micoureus'' * ''Stegomarmosa'' }}

The 29 species in the genus '''''Marmosa''''' are relatively small Neotropical members of the family Didelphidae.<ref>{{cite journal|last1=Gutiérrez|first1=EE|last2=Jansa|first2=SA|last3=Voss|first3=RS|title=Molecular systematics of mouse opossums (Didelphidae: Marmosa): assessing species limits using mitochondrial DNA sequences, with comments on phylogenetic relationships and biogeography|journal=American Museum Novitates|date=2010|issue=3692|pages=1–22|doi=10.1206/708.1|hdl=2246/6076|s2cid=52085421|url=https://zenodo.org/records/5359027/files/source.pdf|url-access=}}</ref> This genus is one of three that are known as '''mouse opossums'''. The others are ''Thylamys'' (the "fat-tailed mouse opossums") and ''Tlacuatzin'', the grayish mouse opossum. Members of the genus ''Marmosops'' used to be called "slender mouse opossums", but are now just called "slender opossums". The thirteen members of the ''Marmosa'' subgenus ''Micoureus'', known as '''woolly mouse opossums''', were formerly considered to be a separate genus,<ref name = MSW3b>{{MSW3 Didelphimorphia | id = 10400116 | page =}}</ref> but were moved into ''Marmosa'' in 2009.<ref name = "Voss">{{cite journal | last = Voss | first = R. S. |author2=Jansa, S. A. | title = Phylogenetic relationships and classification of didelphid marsupials, an extant radiation of New World metatherian mammals | journal = Bulletin of the American Museum of Natural History | volume = 322 | pages = 1–177 | year = 2009 | doi = 10.1206/322.1 | hdl = 2246/5975 | s2cid = 85017821 | hdl-access = free}}</ref><ref name= "Voss2014">{{cite journal |last1=Voss|first1=Robert S|last2=Gutiérrez|first2=Eliécer E|last3=Solari|first3=Sergio|last4=Rossi|first4=Rogerio V|last5=Jansa|first5=Sharon A|title=Phylogenetic relationships of mouse opossums (Didelphidae, Marmosa) with a revised subgeneric classification and notes on sympatric diversity|journal=American Museum Novitates|date=2014|issue=3817|pages=1–27|doi=10.1206/3817.1|hdl=2246/6556|s2cid=52082932|url=https://www.biodiversitylibrary.org/bibliography/168236}}</ref> Based on a comparison of sequences of one mitochondrial and three nuclear genes, three new subgenera, ''Eomarmosa'', ''Exulomarmosa'' and ''Stegomarmosa'', were recognized by Voss ''et al.'' in 2014.<ref name= "Voss2014" /> ''Eomarmosa'' and ''Exulomarmosa'', as well as ''Marmosa'' and ''Micoureus'', are thought to be sister taxa, while ''Stegomarmosa'' is viewed as sister to ''Marmosa'' plus ''Micoureus''. ''Exulomarmosa'' is a mostly trans-Andean (west of the Andes) clade.<ref name= "Voss2014" />

==Phylogeny== According to Pavan et al (2025), the relations of Marmosa are as follows:<ref>{{cite journal |last1=Pavan |first1=Silvia E. |last2=Abreu |first2=Edson F. |last3=Sánchez-Vendizú |first3=Pamela Y. |last4=Voss |first4=Robert S. |title=A New Species of Marmosa (Mammalia: Didelphimorphia: Didelphidae) from Parque Nacional del Río Abiseo, Peru |journal=American Museum Novitates |date=19 June 2025 |volume=2025 |issue=4037 |pages=1–20 |doi=10.1206/4037.1 |url=https://bioone.org/journals/american-museum-novitates/volume-2025/issue-4037/4037.1/A-New-Species-of-Marmosa-Mammalia--Didelphimorphia--Didelphidae/10.1206/4037.1.full}}</ref> {{clade | style=font-size:85%; line-height:85%; |label1=''Marmosa'' |1={{clade |1={{clade |label1=''Eomarmosa'' |1=''M. rubra'' |label2=''Exulomarmosa'' |2={{clade |1=''M. simonsi'' |2={{clade |1={{clade |1=''M. robinsoni'' |2=''M. xerophila'' }} |2={{clade |1=''M. isthmica'' |2={{clade |1=''M. mexicana'' |2=''M. zeledoni'' }} }} }} }} }} |2={{clade |label1=''Stegomarmosa'' |1={{clade |1=''M. andersoni'' |2={{clade |1=''M. chachapoya'' |2=''M. lepida'' }} }} |2={{clade |label1=''Marmosa'' |1={{clade |1=''M. tyleriana'' |2={{clade |1=''M. waterhousei'' |2={{clade |1=''M. murina'' |2=''M. macrotarsus'' }} }} }} |label2=''Micoureus'' |2={{clade |1={{clade |1=''M. rapposa'' |2={{clade |1=''M. parda'' |2=''M. rutteri'' }} }} |2={{clade |1={{clade |1=''M. germana'' |2={{clade |1=''M. nicaraguae'' |2={{clade |1=''M. adleri'' |2=''M. alstoni'' }} }} }} |2={{clade |1=''M. paraguayana'' |2={{clade |1={{clade |1=''M. perplexa'' |2=''M. jansae'' }} |2={{clade |1=''M. cf. meridae'' |2={{clade |1=''M. cf. phaea'' |2={{clade |1=''M. constantiae'' |2=''M. demerarae'' }} }} }} }} }} }} }} }} }} }} }}

===Species list=== Subgenus ''Eomarmosa'' Voss, Gutierrez, Solari, Rossi & Jansa 2014 *''Marmosa rubra'' Tate, 1931 Subgenus ''Exulomarmosa'' Voss, Gutierrez, Solari, Rossi & Jansa 2014 *''Marmosa isthmica'' Goldman. 1912 *''Marmosa mexicana'' Merriam, 1897 *''Marmosa robinsoni'' Bangs, 1898 *''Marmosa simonsi'' Thomas, 1899 *''Marmosa xerophila'' Handley & Gordon, 1979 *''Marmosa zeledoni'' Goldman, 1911 Subgenus ''Marmosa'' J. E. Gray 1821 *''Marmosa macrotarsus'' (Wagner, 1842) *''Marmosa murina'' (Linnaeus, 1758) *''Marmosa tyleriana'' Tate 1931 *''Marmosa waterhousei'' (Tomes, 1860) Subgenus ''Micoureus'' Lesson 1842 *''Marmosa adleri''<ref>{{cite web |url=https://digitallibrary.amnh.org/handle/2246/7287 |hdl=2246/7287 |website=digitallibrary.amnh.org |date=8 Dec 2021 |title=A revision of the didelphid marsupial genus Marmosa}}</ref> Voss, Giarla, & Jansa, 2021 * ''Marmosa alstoni'' (J. A. Allen, 1900) * ''Marmosa constantiae'' Thomas, 1900 * ''Marmosa demerarae'' Thomas, 1905 *''Marmosa germana'' Thomas, 1904 *''Marmosa jansae'' Voss & Giarla, 2021 *''Marmosa limae'' Thomas, 1920 *''Marmosa meridae'' Tate, 1931 *''Marmosa nicaraguae'' Thomas, 1905 * ''Marmosa paraguayana'' Tate, 1931 *''Marmosa parda'' Tate, 1931 *''Marmosa perplexa'' Anthony, 1922 * ''Marmosa phaea'' Thomas, 1899 *''Marmosa rapposa'' Thomas, 1899 *''Marmosa rutteri'' Thomas, 1924 Subgenus ''Stegomarmosa'' Pine, 1972 *''Marmosa andersoni'' Pine, 1972 *''Marmosa chachapoya'' Pavan, Abreu, Sánchez-Vendizú and Voss, 2025 *''Marmosa lepida'' (Thomas, 1888)

==References== {{Reflist}}

Category:Opossums Category:Marsupial genera Category:Taxa named by John Edward Gray