Northern Baja deer mouse

Northern Baja deer mouse
Conservation status
	; Least Concern (IUCN 3.1)
	; Secure (NatureServe)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Rodentia
Family:	Cricetidae
Subfamily:	Neotominae
Genus:	Peromyscus
Species:	P. fraterculus
Binomial name
	Peromyscus fraterculus; (Miller, 1892)
Synonyms
	Vesperimus fraterculus Miller, 1892; Sitomys herronii Rhodes, 1893; Peromyscus eremicus propinquus Allen, 1898; Peromyscus homochroia Elliot, 1903;

The northern Baja deer mouse or northern Baja deermouse (Peromyscus fraterculus) is a species of rodent in the family Cricetidae. It is a species of the genus Peromyscus, a closely related group of New World mice often called "deermice". It is native to Southern California and the Baja California peninsula as well as several islands in the Gulf of California. P. fraterculus was previously considered a subspecies of the cactus mouse (Peromyscus eremicus) prior to a 2000 study which identified genetic differences and suggested P. fraterculus is more closely related to Eva's desert mouse (P. eva) than to P. eremicus.^[3]

References

^ Timm, R.; Álvarez-Castañeda, S.T.; Lacher, T. (2017) [errata version of 2016 assessment]. "Peromyscus fraterculus". IUCN Red List of Threatened Species. 2016: e.T136412A115207364. doi:10.2305/IUCN.UK.2016-3.RLTS.T136412A22361984.en. Retrieved 10 May 2025.
^ NatureServe. "Peromyscus fraterculus". NatureServe Explorer. Arlington, Virginia. Retrieved 10 May 2025.
^ Riddle, Brett R.; Hafner, David J.; Alexander, Lois F. (2000). "Phylogeography and systematics of the Peromyscus eremicus species group and the historical biogeography of North American warm regional deserts" (PDF). Molecular Phylogenetics and Evolution. 17 (2): 145–160. Bibcode:2000MolPE..17..145R. doi:10.1006/mpev.2000.0841. PMID 11083930.

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[IUCN-1] Timm, R.; Álvarez-Castañeda, S.T.; Lacher, T. (2017) [errata version of 2016 assessment]. "Peromyscus fraterculus". IUCN Red List of Threatened Species. 2016: e.T136412A115207364. doi:10.2305/IUCN.UK.2016-3.RLTS.T136412A22361984.en. Retrieved 10 May 2025.

[NS-2] NatureServe. "Peromyscus fraterculus". NatureServe Explorer. Arlington, Virginia. Retrieved 10 May 2025.

[Riddle_et_al_2000-3] Riddle, Brett R.; Hafner, David J.; Alexander, Lois F. (2000). "Phylogeography and systematics of the Peromyscus eremicus species group and the historical biogeography of North American warm regional deserts" (PDF). Molecular Phylogenetics and Evolution. 17 (2): 145–160. Bibcode:2000MolPE..17..145R. doi:10.1006/mpev.2000.0841. PMID 11083930.

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