SDNHM: Checklist of Mammals of Imperial County

SDNHM Biodiversity Research Center of the Californias

Checklist of Mammal Species
Recorded in Imperial County

Classification at the species level follows "Mammal Species of The World," 2nd ed., 1993, by D. E. Wilson and D. M. Reeder; that at the subspecies level "The Mammals of North America," 2nd ed., 1981, by E. R. Hall. English names refer to the species as a whole, not individual component subspecies. If a species has a restricted range or multiple subspecies occur in Imperial County, this range is indicated briefly.

** Double asterisks specify that the mammal's occurrence in Imperial County is supported by specimens in the San Diego Natural History Museum.
* Single asterisks specify that specimens in other museums have been reported in the literature.

Opossums: Family Didelphidae
MARSUPIALS: MARSUPIALIA
Opossum	Didelphis virginiana virginiana (introduced)

Shrews: Family Soricidae
INSECTIVORES: ORDER INSECTIVORA
Desert or Desert Gray Shrew	Notiosorex crawfordi crawfordi**

Leaf-nosed Bats: Family Phyllostomatidae
BATS: ORDER CHIROPTERA
California Leaf-nosed Bat	Macrotus californicus**
Plain-nosed Bats: Family Vespertilionidae
Pallid Bat	Antrozous pallidus pallidus
Big Brown Bat	Eptesicus fuscus pallidus**
California Myotis	Myotis californicus stephensi**
Little Brown Myotis	Myotis lucifugus occultus**
Cave Myotis	Myotis velifer brevis
Yuma Myotis	Myotis yumanensis yumanensis**
Western Pipistrelle	Pipistrellus hesperus hesperus**
Townsend's Big-eared Bat	Plecotus townsendii pallescens**
Free-tailed Bats: Family Molossidae
Western Mastiff Bat	Eumops perotis californicus
Pocketed Free-tailed Bat	Nyctinomops femorosaccus
Mexican Free-tailed Bat	Tadarida brasiliensis mexicana**

Dogs: Family Canidae
CARNIVORES: ORDER CARNIVORA
Coyote	Canis latrans mearnsi**
Gray Fox	Urocyon cinereoargenteus scottii**
Kit Fox	Vulpes velox arsipus**
Cats: Family Felidae
Bobcat	Lynx rufus baileyi**
Mountain Lion	Puma concolor browni
Jaguar	Panthera onca arizonensis (extirpated)
Weasels and Relatives: Family Mustelidae
River Otter	Lontra canadensis sonora
Striped Skunk	Mephitis mephitis estor**
Spotted Skunk	Spilogale putorius phenax*
Badger	Taxidea taxus berlandieri**
Raccoons and Relatives: Family Procyonidae
Raccoon	Procyon lotor pallidus**
Ringtail	Bassariscus astutus yumanensis*

Deer and Relatives: Family Cervidae
EVEN-TOED UNGULATES: ORDER ARTIODACTYLA
Mule Deer	Odocoileus hemionus eremicus
Pronghorn: Family Antilocapridae
Pronghorn	Antilocapra americana americana (extirpated)
Cattle, Sheep, and Relatives: Family Bovidae
Bighorn Sheep	Ovis canadensis (threatened)
	O. c. cremnobates (SW corner of county)
	O. c. nelsoni (Chocolate Mts.)

Squirrels: Family Sciuridae
RODENTS: ORDER RODENTIA
White-tailed Antelope Squirrel	Ammospermophilus leucurus leucurus**
Round-tailed Ground Squirrel	Spermophilus tereticaudus tereticaudus**
Baja California Chipmunk	Tamias obscurus obscurus* (SW corner of county only)
Beaver: Family Castoridae
Beaver	Castor canadensis repentinus**
Pocket Gophers: Family Geomyidae
Valley or Botta's Pocket Gopher	Thomomys bottae
	T. b. albatus** (Imperial Valley and eastern Imperial Co.)
	T. b. boregoensis** (western Imperial Co.)
	T. b. crassus* (E side Salton Sea)
	T. b. rupestris* (Chocolate Mts.)
Pocket Mice: Family Heteromyidae
Agile Kangaroo Rat	Dipodomys agilis cabezonae (SW corner of county only)
Desert Kangaroo Rat	Dipodomys deserti deserti**
Merriam's Kangaroo Rat	Dipodomys merriami
	D. m. trinidadensis** (SW corner of county)
	D. m. arenivagus** (Imperial Valley and west)
	D. m. merriami** (east of Salton Sea and Imperial Valley)
Bailey's Pocket Mouse	Chaetodipus baileyi hueyi*
San Diego Pocket Mouse	Chaetodipus fallax pallidus** (SW corner of county only)
Long-tailed Pocket Mouse	Chaetodipus formosus mesembrinus**
Desert Pocket Mouse	Chaetodipus penicillatus angustirostris**
Spiny Pocket Mouse	Chaetodipus spinatus
	C. s. spinatus**
	C. s. rufescens* (SW corner of county only)
Little Pocket Mouse	Perognathus longimembris**
	P. l. internationalis** (SW corner of county)
	P. l. bombycinus* (near Colorado River)*
Rats and Mice: Family Muridae
California Vole	Microtus californicus sanctidiegi (SW corner of county only)
Muskrat	Ondatra zibethicus bernardi**
House Mouse	Mus musculus** (introduced)
Norway Rat	Rattus norvegicus (introduced)
Roof Rat or Black Rat	Rattus rattus (introduced)
White-throated Woodrat	Neotoma albigula venusta**
Desert Woodrat	Neotoma lepida
	N. l. gilva** (SW corner of county)
	N. l. lepida** (central and western Imperial Co.)
	N. l. grinnelli** (eastern Imperial Co.)
Southern Grasshopper Mouse	Onychomys torridus pulcher**
Brush Mouse	Peromyscus boylii rowleyi* (SW corner of county only)
California Mouse	Peromyscus californicus insignis* (SW corner of county only)
Canyon Mouse	Peromyscus crinitus stephensi**
Cactus Mouse	Peromyscus eremicus eremicus**
Deer Mouse	Peromyscus maniculatus sonoriensis**
Piñon Mouse	Peromyscus truei martirensis* (SW corner of county only)
Western Harvest Mouse	Reithrodontomys megalotis megalotis**
Hispid Cotton Rat	Sigmodon hispidus eremicus**

Rabbits and Hares: Family Leporidae
RABBITS AND PIKAS: ORDER LAGOMORPHA
Black-tailed Jackrabbit	Lepus californicus deserticola*
Desert Cottontail	Sylvilagus audubonii arizonae**