Casiomys alfaroi

(J. A. Allen, 1891)

Alfaro's 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 : Casiomys

Species status

Living
Found in the wild
Listed in MSW3 2005

Authority citation

Allen, J.A. 1891-04-17. Notes on a collection of mammals from Costa Rica. Bulletin of the American Museum of Natural History 3(14):203-218.

Authority publication link

https://hdl.handle.net/2246/841

Original name as described

Hesperomys (Oryzomys) alfaroi

Other common names

Alfaro's Oryzomys

Type material

AMNH MO-2808, AMNH MS-3659

Type kind

holotype

Type specimen URI

http://portal.vertnet.org/o/amnh/mammals?id=urn-catalog-amnh-mammals-mo-2808 http://portal.vertnet.org/o/amnh/mammals?id=urn-catalog-amnh-mammals-ms-3659

Type locality

San Carlos, Alajuela Province, Costa Rica.

Biogeographic realm

Neotropic

Country distribution

Mexico · Guatemala · Belize · Honduras · El Salvador · Nicaragua · Costa Rica · Panama · Colombia · Ecuador

Taxonomy notes

moved from Oryzomys to Handleyomys for some time, then moved to the recently described Casiomys

Taxonomy notes citation

Weksler, M., Percequillo, A. R., & Voss, R. S. (2006). Ten new genera of oryzomyine rodents (Cricetidae: Sigmodontinae). American Museum Novitates, 2006(3537), 1-29. · Voss, R.S. 2024. A new genus for the "Alfaroi Group" of Oryzomys sensu lato (Rodentia: Cricetidae: Sigmodontinae). American Museum Novitates 4030:1-9. doi:10.1206/4030.1

IUCN Red List status

Not Evaluated

Species Permalink

https://www.mammaldiversity.org/taxon/1002538

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 (Oryzomys) alfaroi

(J. A. Allen, 1891)

Family

Cricetidae

Root name

alfaroi

Validity status

species

Nomenclatural status

available

Type

AMNH MO-2808, AMNH MS-3659

Type kind

holotype

Type specimen URI

http://portal.vertnet.org/o/amnh/mammals?id=urn-catalog-amnh-mammals-mo-2808 http://portal.vertnet.org/o/amnh/mammals?id=urn-catalog-amnh-mammals-ms-3659

Authority page

214

Authority publication

Bulletin of the American Museum of Natural History

Oryzomys gracilis

(O. Thomas, 1894)

Family

Cricetidae

Root name

gracilis

Validity status

synonym

Nomenclatural status

available

Type

BMNH:Mamm:1873.11.5.4

Type kind

holotype

Type specimen URI

https://data.nhm.ac.uk/object/66cebf2b-88a9-4a7d-b82d-7bfae5f22687

Authority page

358

Authority page URI

https://www.biodiversitylibrary.org/page/24343618

Authority publication

Annals and Magazine of Natural History

Name usages

  1. Thomas (1894:358, https://www.biodiversitylibrary.org/page/24343618) (information at https://hesperomys.com/a/15354)
  2. Thomas (1899:380, https://www.biodiversitylibrary.org/page/25124404) (information at https://hesperomys.com/a/16525)
  3. Lönnberg (1913:27, https://www.biodiversitylibrary.org/page/6426233) (information at https://hesperomys.com/a/15431)
  4. Gyldenstolpe (1932:20) (information at https://hesperomys.com/a/67179)
  5. Musser & Carleton (2005) (information at https://hesperomys.com/a/8562)

Oryzomys alfaroi

(Alfaro, 1897)

Family

Cricetidae

Root name

alfaroi

Validity status

synonym

Nomenclatural status

name_combination

Authority page

36

Authority publication

San José

Name usages

  1. Alfaro (1897:36) (information at https://hesperomys.com/a/37835)
  2. Allen (1897:36, https://www.biodiversitylibrary.org/page/27046594) (information at https://hesperomys.com/a/10040)
  3. Bangs (1902:33, https://www.biodiversitylibrary.org/page/4199098) (information at https://hesperomys.com/a/20608)
  4. Goldman (1918:58, https://www.biodiversitylibrary.org/page/25803865) (information at https://hesperomys.com/a/13280)
  5. Goldman (1920:97, https://www.biodiversitylibrary.org/page/30263209) (information at https://hesperomys.com/a/9520)
  6. Goodwin (1946:391) (information at https://hesperomys.com/a/15800)
  7. Burt & Stirton (1961:61) (information at https://hesperomys.com/a/5545)
  8. Corbet & Hill (1980:143) (information at https://hesperomys.com/a/63069)
  9. Honacki, Kinman & Koeppl (1982:436) (information at https://hesperomys.com/a/63071)
  10. Corbet & Hill (1991:151) (information at https://hesperomys.com/a/63070)
  11. Musser & Carleton (1993:720) (information at https://hesperomys.com/a/63347)
  12. Musser & Carleton (2005) (information at https://hesperomys.com/a/8562)

Oryzomys palatinus

(C. H. Merriam, 1901)

Family

Cricetidae

Root name

palatinus

Validity status

synonym

Nomenclatural status

available

Type

USNM:MAMM:99977

Type kind

holotype

Type specimen URI

http://n2t.net/ark:/65665/355b9805f-cad9-4e44-ab4c-5b819003815f

Authority page

290

Authority page URI

https://www.biodiversitylibrary.org/page/8873156

Authority publication

Proceedings of the Washington Academy of Sciences

Name usages

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

Oryzomys alfaroi incertus

(J. A. Allen, 1908)

Family

Cricetidae

Root name

incertus

Validity status

synonym

Nomenclatural status

available

Type

AMNH M-28584

Type kind

holotype

Type specimen URI

http://portal.vertnet.org/o/amnh/mammals?id=urn-catalog-amnh-mammals-m-28584

Authority page

655

Authority page URI

https://www.biodiversitylibrary.org/page/27046492

Authority publication

Bulletin of the American Museum of Natural History

Name usages

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

Oryzomys palmirae

(J. A. Allen, 1912)

Family

Cricetidae

Root name

palmirae

Validity status

synonym

Nomenclatural status

available

Type

AMNH M-32224 (skin!)

Type kind

lectotype

Type specimen URI

http://portal.vertnet.org/o/amnh/mammals?id=urn-catalog-amnh-mammals-m-32224

Authority page

83

Authority page URI

https://www.biodiversitylibrary.org/page/26898913

Authority publication

Bulletin of the American Museum of Natural History

Name usages

  1. Gyldenstolpe (1932:21) (information at https://hesperomys.com/a/67179)
  2. Musser & Carleton (2005) (information at https://hesperomys.com/a/8562)

Oryzomys alfaroi dariensis

(E. A. Goldman, 1915)

Family

Cricetidae

Root name

dariensis

Validity status

synonym

Nomenclatural status

available

Type

USNM:MAMM:178660

Type kind

holotype

Type specimen URI

http://n2t.net/ark:/65665/37f14feaf-b277-4167-a2c9-863f7bf829cf

Authority page

128

Authority page URI

https://www.biodiversitylibrary.org/page/3338557

Authority publication

Proceedings of the Biological Society of Washington

Name usages

  1. Goldman (1918:61, https://www.biodiversitylibrary.org/page/25803868) (information at https://hesperomys.com/a/13280)
  2. Goldman (1920:98, https://www.biodiversitylibrary.org/page/30263210) (information at https://hesperomys.com/a/9520)
  3. Musser & Carleton (2005) (information at https://hesperomys.com/a/8562)

Oryzomys alfaroi alfaroi

(E. A. Goldman, 1918)

Family

Cricetidae

Root name

alfaroi

Validity status

synonym

Nomenclatural status

name_combination

Authority page

59

Authority page URI

https://www.biodiversitylibrary.org/page/25803866

Authority publication

North American Fauna

Name usages

  1. Goldman (1918:59, https://www.biodiversitylibrary.org/page/25803866) (information at https://hesperomys.com/a/13280)
  2. Goldman (1920:97, https://www.biodiversitylibrary.org/page/30263209) (information at https://hesperomys.com/a/9520)
  3. Goodwin (1946:391) (information at https://hesperomys.com/a/15800)

Oryzomys alfaroi palatinus

(E. A. Goldman, 1918)

Family

Cricetidae

Root name

palatinus

Validity status

synonym

Nomenclatural status

name_combination

Authority page

65

Authority page URI

https://www.biodiversitylibrary.org/page/25803872

Authority publication

North American Fauna

Name usages

Goldman (1918:65, https://www.biodiversitylibrary.org/page/25803872) (information at https://hesperomys.com/a/13280)

Oryzomys (Oryzomys) alfaroi intagensis

(Hershkovitz, 1940)

Family

Cricetidae

Root name

intagensis

Validity status

synonym

Nomenclatural status

available

Type

UMMZ 77152

Type kind

holotype

Authority page

78

Authority publication

Journal of Mammalogy

Name usages

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

Oryzomys alfaroi gloriaensis

(G. G. Goodwin, 1956)

Family

Cricetidae

Root name

gloriaensis

Validity status

synonym

Nomenclatural status

available

Type

AMNH M-166014

Type kind

holotype

Type specimen URI

http://portal.vertnet.org/o/amnh/mammals?id=urn-catalog-amnh-mammals-m-166014

Authority page

8

Authority page URI

https://www.biodiversitylibrary.org/page/63293771

Authority publication

American Museum Novitates

Name usages

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

Oryzomys alfaroi agrestis

(G. G. Goodwin, 1959)

Family

Cricetidae

Root name

agrestis

Validity status

synonym

Nomenclatural status

available

Type

AMNH M-177146

Type kind

holotype

Type specimen URI

http://portal.vertnet.org/o/amnh/mammals?id=urn-catalog-amnh-mammals-m-177146

Authority page

7

Authority page URI

https://www.biodiversitylibrary.org/page/63257868

Authority publication

American Museum Novitates

Name usages

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

Handleyomys alfaroi

(Weksler, Percequillo, & Voss, 2006)

Family

Cricetidae

Root name

alfaroi

Validity status

synonym

Nomenclatural status

name_combination

Authority page

4

Authority page URI

https://www.biodiversitylibrary.org/page/59816742

Authority publication

American Museum Novitates

Name usages

  1. Weksler, Percequillo & Voss (2006:4, https://www.biodiversitylibrary.org/page/59816742) (information at https://hesperomys.com/a/2449)
  2. Wilson, Mittermeier & Lacher (2017:427) (information at https://hesperomys.com/a/57900)
  3. Mammal Diversity Database (2018:ID #15585) (information at https://hesperomys.com/a/67336)
  4. Mammal Diversity Database (2019:ID #15585) (information at https://hesperomys.com/a/67337)
  5. Mammal Diversity Database (2024, https://www.mammaldiversity.org/taxon/1002538) (information at https://hesperomys.com/a/67250)
  6. International Union for the Conservation of Nature (2024, https://www.iucnredlist.org/species/15585/115127897) (information at https://hesperomys.com/a/67246)

Casiomys alfaroi

Voss, 2024

Family

Cricetidae

Root name

alfaroi

Validity status

synonym

Nomenclatural status

name_combination

Authority page

7

Authority publication

American Museum Novitates

Name usages

Voss (2024:7) (information at https://hesperomys.com/a/68287)

Please send any edits, corrections, or unfilled data (including full citations) to mammaldiversity [at] gmail [dot] com.