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A Guide to the Amphibians
and Reptiles of California


San Diegan Tiger Whiptail - Aspidoscelis tigris stejnegeri

(Van Denburgh, 1894)

(= Coastal Whiptail, = Cnemidophorus tigris stejnegeri)
Click on a picture for a larger view



Tiger Whiptails California Range Map Range in California: Blue

Click the map for a guide
to the other subspecies


observation link





Coastal Whiptail
Adult, San Diego County
Coastal Whiptail Coastal Whiptail Coastal Whiptail Coastal Whiptail
  Adult, San Diego County  
Coastal Whiptail
Coastal Whiptail
Coastal Whiptail Coastal Whiptail
Adult, San Diego County Adult, San Gabriel Mountains,
Los Angeles County
Adult, San Diego County Adult, San Diego County
Coastal Whiptail Coastal Whiptail Coastal Whiptail Coastal Whiptail
Adult, San Diego County. Specimen courtesy of Robert Applegate
Coastal Whiptail Coastal Whiptail Coastal Whiptail Coastal Whiptail
Adult, San Diego County © Jay Keller Adult, San Gabriel Mountains, Los Angeles County. © Mike Ryan Adult, Ventura County
© Stacey Bergman
Adult, Riverside County
© Nick Barrientos
Coastal Whiptail
northern pacific rattlesnake Whiptail Eye Whiptail Eye
Copulating adults,
Baja California
A Coast Patch-nosed Snake trying to kill and eat a San Diegan Tiger Whiptail in San Diego County © Tom Day
Watch a video of this at the link below.
Eye open on the left, and eye closed, on the right,
showing the transparent lower eyelid of this species.
Whiptail tracks Great Basin Collared Lizard    
Whiptail Tracks in sand Whiptails, genus Aspidoscelis, have small granular dorsal scales.    
       
Habitat
Coastal Whiptail Habitat Coastal Whiptail Habitat Coastal Whiptail Habitat Coastal Whiptail Habitat
Habitat, San Diego County Habitat, eastern San Diego County
Habitat, 3000 ft., San Diego County Coastal habitat, San Diego County

Coastal Whiptail Habitat Coastal Whiptail Habitat Coastal Whiptail Habitat Coastal Whiptail Habitat
Habitat, Riverside County Habitat, San Gabriel Mountains,
Los Angeles County
Habitat, San Gabriel Mountains,
Los Angeles County
Habitat, western San Bernardino County
Great Basin Fence Lizard Habitat      
Habitat, Santa Ana Mountains,
Riverside County
     
       
Short Video
Coastal Whiptail      
After being released, a Coastal Whiptail remains motionless for a short time before it slowly comes to life and races into the bushes faster than the camera can track it. It was found in a pit trap, then measured and marked in case of re-capture. The shock of the ordeal and the morning chill must have contributed to its initial sluggishness and disorientation.      
       
Description
 
Size
Aspidoscelis tigris as a species is 2 3/8 - 5 inches inches long snout to vent (6 - 12.7 cm), up to around 13 inches (33 cm) total length.

Appearance
A slim-bodied lizard with a long slender tail, a pointed snout, and large symmetrical head plates.
Scales on the back are small and granular, and scales on the tail are keeled.
The belly is made of large, smooth, rectangular scales in 8 lengthwise rows.
The tail can reach up to two times the length of the body.
Color and Pattern
The back and sides are grey, tan, or brown, marked with dark spots or bars or mottling, which is often very sharply defined.
Dark marks on the side don't form vertical bars.
Usually 8 poorly-defined light brown stripes are present, but stripes on the side are less well-defined.
The throat is pale with with large black spots.
Often there are reddish patches on the sides of the belly.
The tail tip is dark or bluish..
Young
Juveniles have fairly well-defined stripes.
In the San Diego area, juveniles are spotted.
The tail tip is bright blue on juveniles.

Life History and Behavior

Activity
Diurnal.
Wary and very active, moving with abrupt stops and starts, side-to-side head movement, and tongue flicking.
Often seen digging rapidly when foraging.
Difficult to approach - typically foraging near cover, and capable of quick bursts of speed into heavy brush or holes.
Diet and Feeding
Small invertebrates, especially spiders, scorpions, centipedes, and termites, and small lizards.
Breeding
Unlike some species of whiptails which are all females, there are male and female western whiptails.
Males and females usually begin mating in May and females lay eggs shortly thereafter.
Females lay one clutch of eggs per year.
Eggs hatch from May to August.


Habitat
Found in a variety of ecosystems, primarily hot and dry open areas with sparse foliage - chaparral, woodland, and riparian areas.

Geographical Range
This subspecies is found in coastal Southern California, mostly west of the Peninsular Ranges and south of the Transverse Ranges, and north into Ventura County. Ranges south into Baja California.

The species (Aspidoscelis tigris) ranges from North-central Oregon and southern Idaho, south through California and Nevada to Baja California, and east into Utah, Colorado, Arizona, and New Mexico and south into Sonora and Sinaloa, Mexico.

Full Species Range Map
Elevational Range
The species is found at sea level to 7,000 ft. (2,130 m). This subspecies may differ somewhat.

Notes on Taxonomy

Alternate and Previous Names (Synonyms)

Cnemidophorus tigris stejnegeri - Coastal Whiptail (Stebbins 2003)
Cnemidophorus tigris multiscutatus
- Coastal Whiptail (Stebbins 1985)
Cnemidophorus tessselatus tesselatus - Common Tesselated Racerunner (Smith 1946)

Conservation Issues  (Conservation Status)
This lizard inhabits habitats in coastal southern California which have been altered and fragmented by development.
Taxonomy
Family Teiidae Whiptails and Racerunners Gray, 1827
Genus Aspidoscelis Whiptails (formerly Cnemidophorus) Fitzinger, 1843
Species tigris Tiger Whiptail (Baird and Girard, 1852)
Subspecies

stejnegeri San Diegan Tiger Whiptail (Van Denburgh, 1894)
Original Description
Cnemidophorus tigris - Baird and Girard, 1852 - Proc. Acad. Nat. Sci. Philadelphia, Vol. 6, p. 69
Cnemidophorus tigris multiscutatus - Cope, "1892" 1893 - Trans. Amer. Philos. Soc., Vol. 17, p. 38

from Original Description Citations for the Reptiles and Amphibians of North America © Ellin Beltz

Meaning of the Scientific Name
Aspidoscelis = "shield-leg" from the Ancient Greek aspido- ("shield") and skelos ("leg").

from Wickipedia

tigris
- Latin - of a tiger - refers to the dorsal pattern
stejnegeri - prob. honors Stejneger, Leonhard

from Scientific and Common Names of the Reptiles and Amphibians of North America - Explained © Ellin Beltz

Related or Similar California Lizards
Great Basin Whiptail - A. t. tigris
California Whiptail - A. t. munda
Belding's Orange-throated Whiptail - Aspidoscelis hyperythra beldingi
More Information and References
California Department of Fish and Wildlife

Stebbins, Robert C., and McGinnis, Samuel M.  Field Guide to Amphibians and Reptiles of California: Revised Edition (California Natural History Guides) University of California Press, 2012.

Stebbins, Robert C. California Amphibians and Reptiles. The University of California Press, 1972.

Stebbins, Robert C. A Field Guide to Western Reptiles and Amphibians. 3rd Edition. Houghton Mifflin Company, 2003.

Behler, John L., and F. Wayne King. The Audubon Society Field Guide to North American Reptiles and Amphibians. Alfred A. Knopf, 1992.

Powell, Robert., Joseph T. Collins, and Errol D. Hooper Jr. A Key to Amphibians and Reptiles of the Continental United States and Canada. The University Press of Kansas, 1998.

Bartlett, R. D. & Patricia P. Bartlett. Guide and Reference to the Turtles and Lizards of Western North America (North of Mexico) and Hawaii. University Press of Florida, 2009.

Jones, Lawrence, Rob Lovich, editors. Lizards of the American Southwest: A Photographic Field Guide. Rio Nuevo Publishers, 2009.

Smith, Hobart M. Handbook of Lizards, Lizards of the United States and of Canada. Cornell University Press, 1946.

Conservation Status

The following status listings come from the Special Animals List and the Endangered and Threatened Animals List which are published by the California Department of Fish and Wildlife.


Listed as Aspidoscelis tigris stejnegeri - coastal whiptail


Organization
Status Listing
NatureServe Global Ranking G5T5 The species and subspecies are: Secure—Common; widespread and abundant.
NatureServe State Ranking S3 Vulnerable in the state due to a restricted range, relatively few populations (often 80 or fewer), recent and widespread declines, or other factors making it vulnerable to extirpation from the state.
U.S. Endangered Species Act (ESA) None
California Endangered Species Act (CESA) None
California Department of Fish and Wildlife SSC Species of Special Concern
Bureau of Land Management None
USDA Forest Service None
IUCN Not listed


 

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