# Marmosa

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Genus of marsupials

Marmosa Robinson's mouse opossum (Marmosa robinsoni) Scientific classification Kingdom: Animalia Phylum: Chordata Class: Mammalia Infraclass: Marsupialia Order: Didelphimorphia Family: Didelphidae Subfamily: Didelphinae Tribe: Marmosini Genus: Marmosa J. E. Gray, 1821 Type species Didelphis marina J. E. Gray, 1821 (incorrect spelling of Didelphis murina Linnaeus, 1758) Subgenera Eomarmosa Exulomarmosa Marmosa Micoureus Stegomarmosa

The 29 species in the [genus](/source/Genus) ***Marmosa*** are relatively small [Neotropical](/source/Neotropical_realm) members of the [family](/source/Family_(taxonomy)) [Didelphidae](/source/Didelphidae).[1] This genus is one of three that are known as **mouse opossums**. The others are *[Thylamys](/source/Thylamys)* (the "fat-tailed mouse opossums") and *[Tlacuatzin](/source/Tlacuatzin)*, the grayish mouse opossum. Members of the genus *[Marmosops](/source/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,[2] but were moved into *Marmosa* in 2009.[3][4] 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.[4] *Eomarmosa* and *Exulomarmosa*, as well as *Marmosa* and *Micoureus*, are thought to be [sister taxa](/source/Sister_taxa), while *Stegomarmosa* is viewed as sister to *Marmosa* plus *Micoureus*. *Exulomarmosa* is a mostly trans-Andean (west of the [Andes](/source/Andes)) clade.[4]

## Phylogeny

According to Pavan et al (2025), the relations of Marmosa are as follows:[5]

Marmosa Eomarmosa M. rubra Exulomarmosa M. simonsi M. robinsoni M. xerophila M. isthmica M. mexicana M. zeledoni Stegomarmosa M. andersoni M. chachapoya M. lepida Marmosa M. tyleriana M. waterhousei M. murina M. macrotarsus Micoureus M. rapposa M. parda M. rutteri M. germana M. nicaraguae M. adleri M. alstoni M. paraguayana M. perplexa M. jansae M. cf. meridae M. cf. phaea M. constantiae M. demerarae

### Species list

Subgenus *Eomarmosa* [Voss](https://en.wikipedia.org/w/index.php?title=Robert_S._Voss&action=edit&redlink=1), [Gutierrez](https://en.wikipedia.org/w/index.php?title=Eliecer_E._Gutierrez&action=edit&redlink=1), [Solari](/source/Sergio_Solari), [Rossi](https://en.wikipedia.org/w/index.php?title=Rogerio_V._Rossi&action=edit&redlink=1) & [Jansa](https://en.wikipedia.org/w/index.php?title=Sharon_A._Jansa&action=edit&redlink=1) 2014

- *[Marmosa rubra](/source/Marmosa_rubra)* [Tate](/source/George_Henry_Hamilton_Tate), 1931

Subgenus *Exulomarmosa* [Voss](https://en.wikipedia.org/w/index.php?title=Robert_S._Voss&action=edit&redlink=1), [Gutierrez](https://en.wikipedia.org/w/index.php?title=Eliecer_E._Gutierrez&action=edit&redlink=1), [Solari](/source/Sergio_Solari), [Rossi](https://en.wikipedia.org/w/index.php?title=Rogerio_V._Rossi&action=edit&redlink=1) & [Jansa](https://en.wikipedia.org/w/index.php?title=Sharon_A._Jansa&action=edit&redlink=1) 2014

- *[Marmosa isthmica](/source/Marmosa_isthmica)* [Goldman](/source/Edward_Alphonso_Goldman). 1912

- *[Marmosa mexicana](/source/Marmosa_mexicana)* [Merriam](/source/Clinton_Hart_Merriam), 1897

- *[Marmosa robinsoni](/source/Marmosa_robinsoni)* [Bangs](/source/Outram_Bangs), 1898

- *[Marmosa simonsi](https://en.wikipedia.org/w/index.php?title=Marmosa_simonsi&action=edit&redlink=1)* [Thomas](/source/Oldfield_Thomas), 1899

- *[Marmosa xerophila](/source/Marmosa_xerophila)* [Handley](/source/Charles_O._Handley) & Gordon, 1979

- *[Marmosa zeledoni](https://en.wikipedia.org/w/index.php?title=Marmosa_zeledoni&action=edit&redlink=1)* [Goldman](/source/Edward_Alphonso_Goldman), 1911

Subgenus *Marmosa* [J. E. Gray](/source/John_Edward_Gray) 1821

- *[Marmosa macrotarsus](/source/Marmosa_macrotarsus)* ([Wagner](/source/Johann_Andreas_Wagner), 1842)

- *[Marmosa murina](/source/Marmosa_murina)* ([Linnaeus](/source/Carl_Linnaeus), 1758)

- *[Marmosa tyleriana](/source/Marmosa_tyleriana)* [Tate](/source/George_Henry_Hamilton_Tate) 1931

- *[Marmosa waterhousei](/source/Marmosa_waterhousei)* ([Tomes](/source/Robert_Fisher_Tomes), 1860)

Subgenus *Micoureus* [Lesson](/source/Ren%C3%A9-Primev%C3%A8re_Lesson) 1842

- *[Marmosa adleri](/source/Marmosa_adleri)*[6] Voss, Giarla, & Jansa, 2021

- *[Marmosa alstoni](/source/Marmosa_alstoni)* ([J. A. Allen](/source/Joel_Asaph_Allen), 1900)

- *[Marmosa constantiae](/source/Marmosa_constantiae)* [Thomas](/source/Oldfield_Thomas), 1900

- *[Marmosa demerarae](/source/Marmosa_demerarae)* [Thomas](/source/Oldfield_Thomas), 1905

- *[Marmosa germana](https://en.wikipedia.org/w/index.php?title=Marmosa_germana&action=edit&redlink=1)* [Thomas](/source/Oldfield_Thomas), 1904

- *[Marmosa jansae](https://en.wikipedia.org/w/index.php?title=Marmosa_jansae&action=edit&redlink=1)* Voss & Giarla, 2021

- *[Marmosa limae](https://en.wikipedia.org/w/index.php?title=Marmosa_limae&action=edit&redlink=1)* [Thomas](/source/Oldfield_Thomas), 1920

- *[Marmosa meridae](https://en.wikipedia.org/w/index.php?title=Marmosa_meridae&action=edit&redlink=1)* [Tate](/source/George_Henry_Hamilton_Tate), 1931

- *[Marmosa nicaraguae](https://en.wikipedia.org/w/index.php?title=Marmosa_nicaraguae&action=edit&redlink=1)* [Thomas](/source/Oldfield_Thomas), 1905

- *[Marmosa paraguayana](/source/Marmosa_paraguayana)* [Tate](/source/George_Henry_Hamilton_Tate), 1931

- *[Marmosa parda](https://en.wikipedia.org/w/index.php?title=Marmosa_parda&action=edit&redlink=1)* [Tate](/source/George_Henry_Hamilton_Tate), 1931

- *[Marmosa perplexa](https://en.wikipedia.org/w/index.php?title=Marmosa_perplexa&action=edit&redlink=1)* Anthony, 1922

- *[Marmosa phaea](/source/Marmosa_phaea)* [Thomas](/source/Oldfield_Thomas), 1899

- *[Marmosa rapposa](https://en.wikipedia.org/w/index.php?title=Marmosa_rapposa&action=edit&redlink=1)* [Thomas](/source/Oldfield_Thomas), 1899

- *[Marmosa rutteri](/source/Marmosa_rutteri)* [Thomas](/source/Oldfield_Thomas), 1924

Subgenus *Stegomarmosa* [Pine](https://en.wikipedia.org/w/index.php?title=R.H._Pine&action=edit&redlink=1), 1972

- *[Marmosa andersoni](/source/Marmosa_andersoni)* Pine, 1972

- *[Marmosa chachapoya](/source/Marmosa_chachapoya)* Pavan, Abreu, Sánchez-Vendizú and Voss, 2025

- *[Marmosa lepida](/source/Marmosa_lepida)* ([Thomas](/source/Oldfield_Thomas), 1888)

## References

1. **[^](#cite_ref-1)** Gutiérrez, EE; Jansa, SA; Voss, RS (2010). ["Molecular systematics of mouse opossums (Didelphidae: Marmosa): assessing species limits using mitochondrial DNA sequences, with comments on phylogenetic relationships and biogeography"](https://zenodo.org/records/5359027/files/source.pdf) (PDF). *American Museum Novitates* (3692): 1–22. [doi](/source/Doi_(identifier)):[10.1206/708.1](https://doi.org/10.1206%2F708.1). [hdl](/source/Hdl_(identifier)):[2246/6076](https://hdl.handle.net/2246%2F6076). [S2CID](/source/S2CID_(identifier)) [52085421](https://api.semanticscholar.org/CorpusID:52085421).

1. **[^](#cite_ref-MSW3b_2-0)** Gardner, A.L. (2005). ["Order Didelphimorphia"](http://www.departments.bucknell.edu/biology/resources/msw3/browse.asp?id=10400116). In [Wilson, D.E.](/source/Don_E._Wilson); Reeder, D.M (eds.). [*Mammal Species of the World: A Taxonomic and Geographic Reference*](http://www.google.com/books?id=JgAMbNSt8ikC&pg=PA) (3rd ed.). Johns Hopkins University Press. pp. 3–18. [ISBN](/source/ISBN_(identifier)) [978-0-8018-8221-0](https://en.wikipedia.org/wiki/Special:BookSources/978-0-8018-8221-0). [OCLC](/source/OCLC_(identifier)) [62265494](https://search.worldcat.org/oclc/62265494).

1. **[^](#cite_ref-Voss_3-0)** Voss, R. S.; Jansa, S. A. (2009). "Phylogenetic relationships and classification of didelphid marsupials, an extant radiation of New World metatherian mammals". *[Bulletin of the American Museum of Natural History](/source/Bulletin_of_the_American_Museum_of_Natural_History)*. **322**: 1–177. [doi](/source/Doi_(identifier)):[10.1206/322.1](https://doi.org/10.1206%2F322.1). [hdl](/source/Hdl_(identifier)):[2246/5975](https://hdl.handle.net/2246%2F5975). [S2CID](/source/S2CID_(identifier)) [85017821](https://api.semanticscholar.org/CorpusID:85017821).

1. ^ [***a***](#cite_ref-Voss2014_4-0) [***b***](#cite_ref-Voss2014_4-1) [***c***](#cite_ref-Voss2014_4-2) Voss, Robert S; Gutiérrez, Eliécer E; Solari, Sergio; Rossi, Rogerio V; Jansa, Sharon A (2014). ["Phylogenetic relationships of mouse opossums (Didelphidae, Marmosa) with a revised subgeneric classification and notes on sympatric diversity"](https://www.biodiversitylibrary.org/bibliography/168236). *American Museum Novitates* (3817): 1–27. [doi](/source/Doi_(identifier)):[10.1206/3817.1](https://doi.org/10.1206%2F3817.1). [hdl](/source/Hdl_(identifier)):[2246/6556](https://hdl.handle.net/2246%2F6556). [S2CID](/source/S2CID_(identifier)) [52082932](https://api.semanticscholar.org/CorpusID:52082932).

1. **[^](#cite_ref-5)** Pavan, Silvia E.; Abreu, Edson F.; Sánchez-Vendizú, Pamela Y.; Voss, Robert S. (19 June 2025). ["A New Species of Marmosa (Mammalia: Didelphimorphia: Didelphidae) from Parque Nacional del Río Abiseo, Peru"](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). *[American Museum Novitates](/source/American_Museum_Novitates)*. **2025** (4037): 1–20. [doi](/source/Doi_(identifier)):[10.1206/4037.1](https://doi.org/10.1206%2F4037.1).

1. **[^](#cite_ref-6)** ["A revision of the didelphid marsupial genus Marmosa"](https://digitallibrary.amnh.org/handle/2246/7287). *digitallibrary.amnh.org*. 8 December 2021. [hdl](/source/Hdl_(identifier)):[2246/7287](https://hdl.handle.net/2246%2F7287).

v t e Extant Didelphimorphia (opossums) species Kingdom Animalia Phylum Chordata Class Mammalia Infraclass Marsupialia Subfamily Caluromyinae Caluromys (Woolly opossums) Subgenus Caluromys Bare-tailed woolly opossum (C. philander) Subgenus Mallodelphys Derby's woolly opossum (C. derbianus) Brown-eared woolly opossum (C. lanatus) Caluromysiops Black-shouldered opossum (C. irrupta) Subfamily Didelphinae (cont. below) Chacodelphys Chacoan pygmy opossum (C. formosa) Chironectes Water opossum (C. minimus) Cryptonanus Agricola's gracile opossum (C. agricolai) Chacoan gracile opossum (C. chacoensis) Guahiba gracile opossum (C. guahybae) Unduavi gracile opossum (C. unduaviensis) Didelphis (Large American opossums) White-eared opossum (D. albiventris) Big-eared opossum (D. aurita) Guianan white-eared opossum (D. imperfecta) Common opossum (D. marsupialis) Andean white-eared opossum (D. pernigra) Virginia opossum (D. virginiana) Gracilinanus Aceramarca gracile opossum (G. aceramarcae) Agile gracile opossum (G. agilis) Wood sprite gracile opossum (G. dryas) Emilia's gracile opossum (G. emiliae) Northern gracile opossum (G. marica) Brazilian gracile opossum (G. microtarsus) Peruvian opossum (G. peruanus) Lestodelphys Patagonian opossum (L. halli) Lutreolina (Little water opossums) Big lutrine opossum (L. crassicaudata) Massoia's lutrine opossum (L. massoia)) Marmosa (Mouse opossums) Adler's mouse opossum (M. adleri) Alston's mouse opossum (M. alstoni) Heavy-browed mouse opossum (M. andersoni) White-bellied woolly mouse opossum (M. constantiae) Woolly mouse opossum (M. demerarae) Northwestern mouse opossum (M. germana) Isthmian mouse opossum (M. isthmica) Jansa's woolly mouse opossum (M. jansae) Rufous mouse opossum (M. lepida) Quechuan mouse opossum (M. macrotarsus) Mexican mouse opossum (M. mexicana) Linnaeus's mouse opossum (M. murina) Nicaraguan woolly mouse opossum (M. nicaraguae) Tate's woolly mouse opossum (M. paraguayanus) Peruvian woolly mouse opossum (M. parda) Anthony's woolly mouse opossum (M. perplexa) Little woolly mouse opossum (M. phaeus) Bolivian woolly mouse opossum (M. rapposa) Bare-tailed woolly mouse opossum (M. regina) Robinson's mouse opossum (M. robinsoni) Red mouse opossum (M. rubra) Bare-tailed woolly mouse opossum (M. rutteri) Simons's woolly mouse opossum (M. simonsi) Tyler's mouse opossum (M. tyleriana) Waterhouse's mouse opossum (M. waterhousei) Guajira mouse opossum (M. xerophila) Zeledon's mouse opossum (M. zeledoni) Marmosops (Slender opossums) Bishop's slender opossum (M. bishopi) Carr's slender opossum (M. carri) Cauca slender opossum (M. caucae) Cordillera slender opossum (M. chucha) Narrow-headed slender opossum (M. cracens) Creighton's slender opossum (M. creightoni) Dorothy's slender opossum (M. dorothea) Dusky slender opossum (M. fuscatus) Handley's slender opossum (M. handleyi) Tschudi's slender opossum (M. impavidus) Gray slender opossum (M. incanus) Panama slender opossum (M. invictus) Junin slender opossum (M. juninensis) Rio Magdalena slender opossum (M. magdalenae) Silva's slender opossum (M. marina) Neblina slender opossum (M. neblina) White-bellied slender opossum (M. noctivagus) Spectacled slender opossum (M. ocellatus) Ojasti's slender opossum (M. ojastii) Pantepui slender opossum (M. pakaraimae) Delicate slender opossum (M. parvidens) Brazilian slender opossum (M. paulensis) Pinheiro's slender opossum (M. pinheiroi) Soini's slender opossum (M. soinii) Woodall's slender opossum (M. woodalli) Subfamily Didelphinae (cont. above) Metachirus (Brown four- eyed opossums) Aritana's brown four-eyed opossum (M. aritanai) Common brown four-eyed opossum (M. myosuros) Guianan brown four-eyed opossum (M. nudicaudatus) Monodelphis (Short-tailed opossums) Sepia short-tailed opossum (M. adusta) Northern three-striped opossum (M. americana) Arlindo's short-tailed opossum (M. arlindoi) Northern red-sided opossum (M. brevicaudata) Yellow-sided opossum (M. dimidiata) Gray short-tailed opossum (M. domestica) Emilia's short-tailed opossum (M. emiliae) Gardner's short-tailed opossum (M. gardneri) Amazonian red-sided opossum (M. glirina) Handley's short-tailed opossum (M. handleyi) Ihering's three-striped opossum (M. iheringi) Pygmy short-tailed opossum (M. kunsi) Osgood's short-tailed opossum (M. osgoodi) Hooded red-sided opossum (M. palliolata) Peruvian short-tailed opossum (M. peruviana) Long-nosed short-tailed opossum (M. pinocchio) Reig's opossum (M. reigi) Ronald's opossum (M. ronaldi) Saci short-tailed opossum (M. saci) Santa Rosa short-tailed opossum (M. sanctaerosae) Long-nosed short-tailed opossum (M. scalops) Touan short-tailed opossum (M. touan) One-striped opossum (M. unistriata) Voss's short-tailed opossum (M. vossi) Philander (Gray & black four- eyed opossums) Anderson's four-eyed opossum (P. andersoni) Common four-eyed opossum (P. canus) Deltaic four-eyed opossum (P. deltae) Southeastern four-eyed opossum (P. frenatus) McIlhenny's four-eyed opossum (P. mcilhennyi) Dark four-eyed opossum (P. melanurus) Black four-eyed opossum (P. nigratus) Mondolfi's four-eyed opossum (P. mondolfii) Olrog's four-eyed opossum (P. olrogi) Gray four-eyed opossum (P. opossum) Pebas four-eyed opossum (P. pebas) Southern four-eyed opossum (P. quica) Northern four-eyed opossum (P. vossi) Thylamys (Fat-tailed mouse opossums) Cinderella fat-tailed mouse opossum (T. cinderella) Elegant fat-tailed mouse opossum (T. elegans) Karimi's fat-tailed mouse opossum (T. karimii) Paraguayan fat-tailed mouse opossum (T. macrurus) White-bellied fat-tailed mouse opossum (T. pallidior) Common fat-tailed mouse opossum (T. pusillus) Argentine fat-tailed mouse opossum (T. sponsorius) Tate's fat-tailed mouse opossum (T. tatei) Dwarf fat-tailed mouse opossum (T. velutinus) Buff-bellied fat-tailed mouse opossum (T. venustus) Tlacuatzin (Grey mouse opossums) Balsas gray mouse opossum (T. balsasensis) Tehuantepec gray mouse opossum (T. canescens) Yucatan gray mouse opossum (T. gaumeri) Tres Marias gray mouse opossum (T. insularis) Northern gray mouse opossum (T. sinaloae) Subfamily Glironiinae Glironia Bushy-tailed opossum (G. venusta) Subfamily Hyladelphinae Hyladelphys Kalinowski's mouse opossum (H. kalinowskii)

Taxon identifiers Marmosa Wikidata: Q244060 Wikispecies: Marmosa ADW: Marmosa BOLD: 52376 CoL: 5LHG EoL: 20194 GBIF: 2439860 iNaturalist: 42663 ITIS: 552392 MSW: 10400070 NCBI: 9269 Paleobiology Database: 39970

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