Oecomys bicolor

(Tomes, 1860)

White-bellied Arboreal Rice Rat

Taxonomy

Subclass : Theria
Infraclass : Placentalia
Magnorder : Boreoeutheria
Superorder : Euarchontoglires
Order : Rodentia
Suborder : Supramyomorpha
Infraorder : Myomorphi
Superfamily : Muroidea
Family : Cricetidae
Subfamily : Sigmodontinae
Tribe : Oryzomyini
Genus : Oecomys

Species status

Living
Found in the wild
Listed in MSW3 2005

Authority citation

Tomes, R.F. 1860-08. Notes on a second collection of Mammalia made by Mr. Fraser in the Republic of Ecuador. Proceedings of the Zoological Society of London 1860(2):211-221.

Authority publication link

https://www.biodiversitylibrary.org/page/12866755

Original name as described

Hesperomys bicolor

Other common names

Bicolored Arboreal Rice Rat · White-bellied Oecomys

Type material

BMNH:Mamm:1907.1.1.96

Type kind

holotype

Type specimen URI

https://data.nhm.ac.uk/object/4eeea607-5926-4cd4-b412-1e91ad06922e

Type locality

"Gualaquiza, " Morona Santiago, Ecuador.

Biogeographic realm

Neotropic

Country distribution

Panama · Colombia · Venezuela · Guyana · Suriname · French Guiana · Ecuador · Peru · Brazil · Bolivia

Taxonomy notes

previously included O. trabeatus

Taxonomy notes citation

Voss, R.S., Giarla, T.C., Lim, B.K. and Engstrom, M.D. 2025-06-19. A multigene phylogeny for Oecomys (Rodentia: Cricetidae: Sigmodontinae) with descriptions of new and revalidated taxa and a partial species-group classification. American Museum Novitates 4038:1-40.

IUCN Red List status

Least Concern

Species Permalink

https://www.mammaldiversity.org/taxon/1002617

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.

Hesperomys bicolor

(Tomes, 1860)

Family

Cricetidae

Root name

bicolor

Validity status

species

Nomenclatural status

available

Type

BMNH:Mamm:1907.1.1.96

Type kind

holotype

Type specimen URI

https://data.nhm.ac.uk/object/4eeea607-5926-4cd4-b412-1e91ad06922e

Authority page

217

Authority page URI

https://www.biodiversitylibrary.org/page/12866755

Authority publication

Proceedings of the Zoological Society of London

Name usages

Thomas (1884:448, https://www.biodiversitylibrary.org/page/30826806) (information at https://hesperomys.com/a/14014)

Myoxomys bicolor

(Tomes, 1862)

Family

Cricetidae

Root name

bicolor

Validity status

synonym

Nomenclatural status

name_combination

Authority page

284

Authority page URI

https://www.biodiversitylibrary.org/page/28672820

Authority publication

Proceedings of the Zoological Society of London

Name usages

  1. Tomes (1862:284, https://www.biodiversitylibrary.org/page/28672820) (information at https://hesperomys.com/a/34985)
  2. Murray (1866:358, https://www.biodiversitylibrary.org/page/15580354) (information at https://hesperomys.com/a/39798)

Rhipidomys benevolens

(O. Thomas, 1901)

Family

Cricetidae

Root name

benevolens

Validity status

synonym

Nomenclatural status

available

Type

BMNH:Mamm:1901.2.1.14

Type kind

holotype

Type specimen URI

https://data.nhm.ac.uk/object/5a2978da-0408-47d4-9c83-987f3361c4ea

Authority page

369

Authority page URI

https://www.biodiversitylibrary.org/page/24345243

Authority publication

Annals and Magazine of Natural History

Name usages

Musser & Carleton (2005) (information at https://hesperomys.com/a/8562)

Rhipidomys rosilla

(O. Thomas, 1904)

Family

Cricetidae

Root name

rosilla

Validity status

synonym

Nomenclatural status

available

Type

BMNH:Mamm:1904.5.7.37

Type kind

holotype

Type specimen URI

https://data.nhm.ac.uk/object/a70401b8-8a85-4fbf-b394-dbb60ae492c5

Authority page

35

Authority page URI

https://www.biodiversitylibrary.org/page/27733762

Authority publication

Annals and Magazine of Natural History

Name usages

  1. Thomas (1904:35, https://www.biodiversitylibrary.org/page/27733762) (information at https://hesperomys.com/a/15153)
  2. Musser & Carleton (2005) (information at https://hesperomys.com/a/8562)

Oecomys nitedulus

O. Thomas, 1910

Family

Cricetidae

Root name

nitedulus

Validity status

synonym

Nomenclatural status

available

Type

BMNH:Mamm:1906.4.8.31

Type kind

holotype

Type specimen URI

https://data.nhm.ac.uk/object/2189f170-1818-4f20-9c4e-1688b291b7e5

Authority page

505

Authority page URI

https://www.biodiversitylibrary.org/page/18619746

Authority publication

Annals and Magazine of Natural History

Name usages

  1. Gyldenstolpe (1932:39) (information at https://hesperomys.com/a/67179)
  2. Tate (1939:194) (information at https://hesperomys.com/a/9796)
  3. Musser & Carleton (2005) (information at https://hesperomys.com/a/8562)

Oecomys bicolor

Osgood, 1914

Family

Cricetidae

Root name

bicolor

Validity status

synonym

Nomenclatural status

name_combination

Authority page

161

Authority page URI

https://www.biodiversitylibrary.org/page/2646800

Authority publication

Field Museum of Natural History, Zoological Series

Name usages

  1. Osgood (1914:161, https://www.biodiversitylibrary.org/page/2646800) (information at https://hesperomys.com/a/20586)
  2. Thomas (1928:262) (information at https://hesperomys.com/a/19808)
  3. Gyldenstolpe (1932:39) (information at https://hesperomys.com/a/67179)
  4. Musser & Carleton (1993:715) (information at https://hesperomys.com/a/63347)
  5. Anderson (1997:388) (information at https://hesperomys.com/a/5773)
  6. Musser & Carleton (2005) (information at https://hesperomys.com/a/8562)
  7. Wilson, Mittermeier & Lacher (2017:420) (information at https://hesperomys.com/a/57900)
  8. Mammal Diversity Database (2018:ID #15131) (information at https://hesperomys.com/a/67336)
  9. Mammal Diversity Database (2019:ID #15131) (information at https://hesperomys.com/a/67337)
  10. Mammal Diversity Database (2024, https://www.mammaldiversity.org/taxon/1002617) (information at https://hesperomys.com/a/67250)
  11. International Union for the Conservation of Nature (2024, https://www.iucnredlist.org/species/15131/115124926) (information at https://hesperomys.com/a/67246)

Œcomys florenciæ

J. A. Allen, 1916

Family

Cricetidae

Root name

florenciae

Validity status

synonym

Nomenclatural status

available

Type

AMNH M-33863

Type kind

holotype

Type specimen URI

http://portal.vertnet.org/o/amnh/mammals?id=urn-catalog-amnh-mammals-m-33863

Authority page

524

Authority publication

Bulletin of the American Museum of Natural History

Name usages

  1. Allen (1916:524) (information at https://hesperomys.com/a/11551)
  2. Gyldenstolpe (1932:39) (information at https://hesperomys.com/a/67179)
  3. Musser & Carleton (2005) (information at https://hesperomys.com/a/8562)

Œcomys milleri

J. A. Allen, 1916

Family

Cricetidae

Root name

milleri

Validity status

synonym

Nomenclatural status

available

Type

AMNH M-37117

Type kind

holotype

Type specimen URI

http://portal.vertnet.org/o/amnh/mammals?id=urn-catalog-amnh-mammals-m-37117

Authority page

523

Authority publication

Bulletin of the American Museum of Natural History

Name usages

  1. Allen (1916:523) (information at https://hesperomys.com/a/11551)
  2. Gyldenstolpe (1932:40) (information at https://hesperomys.com/a/67179)
  3. Musser & Carleton (2005) (information at https://hesperomys.com/a/8562)

Oecomys benevolens

Gyldenstolpe, 1932

Family

Cricetidae

Root name

benevolens

Validity status

synonym

Nomenclatural status

name_combination

Authority page

40

Authority publication

Kunglika Svenska Vetenskapsakademiens Handlingar

Name usages

Gyldenstolpe (1932:40) (information at https://hesperomys.com/a/67179)

Oecomys rosilla

Gyldenstolpe, 1932

Family

Cricetidae

Root name

rosilla

Validity status

synonym

Nomenclatural status

name_combination

Authority page

39

Authority publication

Kunglika Svenska Vetenskapsakademiens Handlingar

Name usages

Gyldenstolpe (1932:39) (information at https://hesperomys.com/a/67179)

Oecomys phelpsi

Tate, 1939

Family

Cricetidae

Root name

phelpsi

Validity status

synonym

Nomenclatural status

available

Type

AMNH M-131164

Type kind

holotype

Type specimen URI

http://portal.vertnet.org/o/amnh/mammals?id=urn-catalog-amnh-mammals-m-131164

Authority page

194

Authority publication

Bulletin of the American Museum of Natural History

Name usages

  1. Tate (1939:194) (information at https://hesperomys.com/a/9796)
  2. Musser & Carleton (2005) (information at https://hesperomys.com/a/8562)

Oryzomys bicolor

(Husson, 1978)

Family

Cricetidae

Root name

bicolor

Validity status

synonym

Nomenclatural status

name_combination

Authority page

399

Authority publication

Zoölogische Monographieën

Name usages

  1. Husson (1978:399) (information at https://hesperomys.com/a/35225)
  2. Corbet & Hill (1980:143) (information at https://hesperomys.com/a/63069)
  3. Honacki, Kinman & Koeppl (1982:437) (information at https://hesperomys.com/a/63071)
  4. Corbet & Hill (1991:151) (information at https://hesperomys.com/a/63070)

Oryzomys bicolor bicolor

(Husson, 1978)

Family

Cricetidae

Root name

bicolor

Validity status

synonym

Nomenclatural status

name_combination

Authority page

399

Authority publication

Zoölogische Monographieën

Name usages

Husson (1978:399) (information at https://hesperomys.com/a/35225)

Oecomys bicolor bicolor

S. Anderson, 1997

Family

Cricetidae

Root name

bicolor

Validity status

synonym

Nomenclatural status

name_combination

Authority page

389

Authority publication

Bulletin of the American Museum of Natural History

Name usages

Anderson (1997:389) (information at https://hesperomys.com/a/5773)

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