Thylamys pusillus

(A. G. Desmarest, 1804)

Chacoan Fat-tailed Opossum

Taxonomy

Subclass : Theria
Infraclass : Marsupialia
Superorder : Ameridelphia
Order : Didelphimorphia
Family : Didelphidae
Subfamily : Didelphinae
Tribe : Thylamyini
Genus : Thylamys
Subgenus : Thylamys

Species status

Living
Found in the wild
Listed in MSW3 2005

Authority citation

Desmarest, A.G. 1804. Tableau méthodique des mammifères. Pp. 5–38 in Anonymous. (eds.). Nouveau dictionnaire d'histoire naturelle. Tome XXIV. Crapelet, Nouveau Dictionnaire d'Histoire Naturelle, 238 pp.

Authority publication link

https://www.biodiversitylibrary.org/page/57784622

Original name as described

Didelphis pusilla

Other common names

Austral Mouse Opossum · Chacoan Thylamys · Common Fat-tailed Mouse Opossum · Common Mouse Opossum · Small Fat-tailed Mouse Opossum · Small Fat-tailed Opossum

Type material

MVZ:Mamm:144311

Type kind

neotype

Type locality

type locality not given. Identified by Tate in 1933 as "S. Ignacio, Misiones, Paraguay."

Biogeographic realm

Neotropic

Country distribution

Bolivia · Paraguay · Argentina

Taxonomy notes

tentatively includes citellus and pulchellus (sometimes under the name bruchi), although some authors continue to recognize both species

Taxonomy notes citation

Teta, P. V., D Elía, G., Flores, D. A., & de La Sancha, N. (2009). Diversity and distribution of the mouse opossums of the genus Thylamys (Didelphimorphia, Didelphidae) in north-eastern and central Argentina. · Giarla, T. C., Voss, R. S., & Jansa, S. A. (2010). Species limits and phylogenetic relationships in the didelphid marsupial genus Thylamys based on mitochondrial DNA sequences and morphology. Bulletin of the American Museum of Natural History, 2010(346), 1-67. · Palma, R. E., Boric‐Bargetto, D., Jayat, J. P., Flores, D. A., Zeballos, H., Pacheco, V., ... & Pardiñas, U. F. (2014). Molecular phylogenetics of mouse opossums: new findings on the phylogeny of Thylamys (Didelphimorphia, Didelphidae). Zoologica Scripta, 43(3), 217-234. · Voss, R. S. (2022). An Annotated Checklist of Recent Opossums (Mammalia: Didelphidae). Bulletin of the American Museum of Natural History, 455(1), 1-76.

IUCN Red List status

Least Concern

Species Permalink

https://www.mammaldiversity.org/taxon/1000131

Country distribution map

The map below provides a general overview. Most species inhabit only specific regions within countries. Hover over the highlighted regions to see the country name.

Names and synonyms

Present and past (if available) associated names to the species. Click on a name to view its details. If the list is long, scroll down to see more.

Marmosa marmota

(O. Thomas, 1896)

Family

Didelphidae

Root name

marmota

Validity status

synonym

Nomenclatural status

available

Type

BMNH (number not known)

Type kind

holotype

Authority page

314 (footnote)

Authority page URI

https://www.biodiversitylibrary.org/page/19211255

Authority publication

Annals and Magazine of Natural History

Name usages

Gardner (2005) (information at https://hesperomys.com/a/8547)

Marmosa citella

(O. Thomas, 1912)

Family

Didelphidae

Root name

citellus

Validity status

synonym

Nomenclatural status

available

Type

BMNH:Mamm:1898.8.19.9

Type kind

holotype

Type specimen URI

https://data.nhm.ac.uk/object/f89e6e2b-1c6e-4817-a6b2-c1c656ecdab2

Authority page

409

Authority page URI

https://www.biodiversitylibrary.org/page/18639166

Authority publication

Annals and Magazine of Natural History

Name usages

Gardner (2005) (information at https://hesperomys.com/a/8547)

Marmosa verax

(O. Thomas, 1921)

Family

Didelphidae

Root name

verax

Validity status

synonym

Nomenclatural status

available

Type

BMNH:Mamm:1920.12.18.34

Type kind

holotype

Type specimen URI

https://data.nhm.ac.uk/object/1134777e-f692-4b39-8d97-234945ed9f15

Authority page

520

Authority page URI

https://www.biodiversitylibrary.org/page/15626951

Authority publication

Annals and Magazine of Natural History

Name usages

Gardner (2005) (information at https://hesperomys.com/a/8547)

Marmosa bruchi

(O. Thomas, 1921)

Family

Didelphidae

Root name

bruchi

Validity status

synonym

Nomenclatural status

available

Type

BMNH:Mamm:1921.4.21.8

Type kind

holotype

Type specimen URI

https://data.nhm.ac.uk/object/041cecfc-b14e-4b8b-a022-6ba48fde2422

Authority page

519

Authority page URI

https://www.biodiversitylibrary.org/page/15626950

Authority publication

Annals and Magazine of Natural History

Name usages

Gardner (2005) (information at https://hesperomys.com/a/8547)

Marmosa janetta pulchella

(Cabrera, 1934)

Family

Didelphidae

Root name

pulchellus

Validity status

synonym

Nomenclatural status

available

Type

MLP 21-X-35-32

Type kind

holotype

Authority page

126

Authority publication

Notas Preliminares del Museo de La Plata

Name usages

Gardner (2005) (information at https://hesperomys.com/a/8547)

Didelphis pusilla

(A. G. Desmarest, 1804)

Family

Didelphidae

Root name

pusillus

Validity status

species

Nomenclatural status

available

Type

MVZ:Mamm:144311

Type kind

neotype

Authority page

19

Authority page URI

https://www.biodiversitylibrary.org/page/57784622

Authority publication

Nouveau Dictionnaire d'Histoire Naturelle

Name usages

Lesson (1827:213, https://www.biodiversitylibrary.org/page/54207681) (information at https://hesperomys.com/a/36839)

Didelphys nana

(I. von Olfers, 1818)

Family

Didelphidae

Root name

nana

Validity status

synonym

Nomenclatural status

nomen_novum

Type

MVZ:Mamm:144311

Type kind

neotype

Authority page

206

Authority publication

book

Name usages

Gardner (2005) (information at https://hesperomys.com/a/8547)

Didelphis nana

(H. R. Schinz, 1825)

Family

Didelphidae

Root name

nana

Validity status

synonym

Nomenclatural status

name_combination

Authority page

374

Authority page URI

https://www.biodiversitylibrary.org/page/51523791

Authority publication

Stuttgart

Peramys pusilla

(Lesson, 1842)

Family

Didelphidae

Root name

pusilla

Validity status

synonym

Nomenclatural status

name_combination

Authority page

187

Authority publication

Paris

Name usages

Lesson (1842:187) (information at https://hesperomys.com/a/36812)

Didelphys pusilla

(Giebel, 1855)

Family

Didelphidae

Root name

pusilla

Validity status

synonym

Nomenclatural status

name_combination

Authority page

715

Authority page URI

https://www.biodiversitylibrary.org/page/45548906

Authority publication

Leipzig

Name usages

Giebel (1855:715, https://www.biodiversitylibrary.org/page/45548906) (information at https://hesperomys.com/a/38563)

Marmosa pusilla

(Corbet & J. Edwards Hill, 1980)

Family

Didelphidae

Root name

pusilla

Validity status

synonym

Nomenclatural status

name_combination

Authority page

8

Authority publication

London

Name usages

  1. Corbet & Hill (1980:8) (information at https://hesperomys.com/a/63069)
  2. Honacki, Kinman & Koeppl (1982:22) (information at https://hesperomys.com/a/63071)

Thylamys pusillus

A. L. Gardner, 2005

Family

Didelphidae

Root name

pusillus

Validity status

synonym

Nomenclatural status

name_combination

Authority publication

Baltimore

Name usages

  1. Gardner (2005) (information at https://hesperomys.com/a/8547)
  2. Mittermeier & Wilson (2015:178) (information at https://hesperomys.com/a/59410)
  3. Mammal Diversity Database (2018:ID #201936) (information at https://hesperomys.com/a/67336)
  4. Mammal Diversity Database (2019:ID #201936) (information at https://hesperomys.com/a/67337)
  5. Mammal Diversity Database (2024, https://www.mammaldiversity.org/taxon/1000131) (information at https://hesperomys.com/a/67250)
  6. International Union for the Conservation of Nature (2024, https://www.iucnredlist.org/species/201936/22172657) (information at https://hesperomys.com/a/67246)

Thylamys citellus

Mittermeier & D. E. Wilson, 2015

Family

Didelphidae

Root name

citellus

Validity status

synonym

Nomenclatural status

name_combination

Authority page

177

Authority publication

Barcelona

Name usages

  1. Mittermeier & Wilson (2015:177) (information at https://hesperomys.com/a/59410)
  2. Mammal Diversity Database (2018:ID #199835) (information at https://hesperomys.com/a/67336)
  3. Mammal Diversity Database (2019:ID #199835) (information at https://hesperomys.com/a/67337)
  4. International Union for the Conservation of Nature (2024, https://www.iucnredlist.org/species/199835/22172943) (information at https://hesperomys.com/a/67246)

Thylamys pulchellus

Mittermeier & D. E. Wilson, 2015

Family

Didelphidae

Root name

pulchellus

Validity status

synonym

Nomenclatural status

name_combination

Authority page

177

Authority publication

Barcelona

Name usages

  1. Mittermeier & Wilson (2015:177) (information at https://hesperomys.com/a/59410)
  2. Mammal Diversity Database (2018:ID #199834) (information at https://hesperomys.com/a/67336)
  3. Mammal Diversity Database (2019:ID #199834) (information at https://hesperomys.com/a/67337)
  4. International Union for the Conservation of Nature (2024, https://www.iucnredlist.org/species/199834/22172571) (information at https://hesperomys.com/a/67246)

Didelphys nana

(Illiger, 1815)

Family

Didelphidae

Root name

nana

Validity status

synonym

Nomenclatural status

nomen_nudum

Authority page

107

Authority page URI

https://www.biodiversitylibrary.org/page/11080963

Authority publication

Abhandlungen der physikalischen Klasse der Königlich-Preussischen Akademie der Wissenschaften

Name usages

Illiger (1815:107, https://www.biodiversitylibrary.org/page/11080963) (information at https://hesperomys.com/a/38688)

Didelphys nana

(Oken, 1816)

Family

Didelphidae

Root name

nana

Validity status

synonym

Nomenclatural status

inconsistently_binominal

Authority page

1140

Authority page URI

https://www.biodiversitylibrary.org/page/59375887

Authority publication

Jena

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