California Reptiles & Amphibians

Salvadora hexalepis mojavensis - Mohave Patch-nosed Snake



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Range in California: Green

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to the other subspecies.







 
Adult, Inyo County
 
Adult, Inyo County Juvenile, Kern County © Brad Alexander
Adult, San Bernardino County © Patrick Briggs
Adult, Inyo County
© William Flaxington
Habitat, Inyo County


Habitat, Inyo County
Habitat, Inyo County
Description

Nonvenomous
Considered harmless to humans.
Size
Salvadora hexalepis ranges in size from 10 - 46 inches long (25 - 117 cm). Most snakes seen will be around 26 - 36 inches (66 - 91 cm).
Appearance
A fast, moderately-sized slender striped snake with smooth scales, large eyes, and a large scale over the tip of the snout. Well-camouflaged, this snake is pale gray with a broad yellow or tan stripe down the middle of the back, and dark stripes on the sides. These dark stripes is often vague or broken up, and occasionally corssbars obscure the stripes. The top of the head is gray or brownish. The underside is cream, sometimes shading to pale orange at the tail end.
Behavior
Little is known about the natural history of this species. Active during daylight, even in times of extreme heat. Terrestrial, but may climb shrubs in pursuit of prey. Burrows into loose soil. Able to move very quickly. Their acute vision allows them to escape quickly when they feel threatened, making this snake sometimes difficult to capture during the heat of the day. When cornered, they will inflate the body and strike.
Diet
Eats mostly lizards, along with small mammals, and possibly small snakes, nestling birds, and amphibians.
Reproduction
Lays eggs, probably May to August.
Range
This subspecies occurs in California from roughly Riverside County, west along the desert side of the mountains, north east of the Sierra Nevada Mountains into Nevada and northeast California in Lassen County, and east into extreme southeast Utah and Arizona.
Habitat
Inhabits open arid and semi-arid areas - deserts, brushland, grassland, scrub, sagebrush, in canyons, rocky hillsides, sandy plains.
Taxonomic Notes
There are four subspecies of Salvadora hexalepis, with three occuring in California: S. h. hexalepis - Desert Patch-nosed Snake, S. h. mojavensis - Mohave Patch-nosed Snake, and S. h. virgultea - Coast Patch-nosed Snake. S. h. deserticola - Big Bend Patch-nosed Snake, which occurs in the Southwest, is recognized by many taxonomists as a unique species, Salvadora deserticola, leaving them to recognize only three subspecies of Salvadora hexalepis.
Conservation Issues  (Conservation Status)
None.

Taxonomy
Family Colubridae Colubrids
Genus Salvadora Patch-nosed Snakes
Species hexalepis Western Patch-nosed Snake
Subspecies


mojavensis Mohave Patch-nosed Snake
Original Description
Salvadora hexalepis - (Cope, "1866" 1867) - Proc. Acad. Nat. Sci. Philadelphia, Vol. 18, p. 304
Salvadora hexalepis mohavensis - Bogert, 1945 - Amer. Mus.

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

Meaning of the Scientific Name
Salvadora - Latin - salvus - whole, sound, well preserved and dura - hide or skin -- "body covered w/smooth scales"
hexalepis
- Greek - hex - six and lepisma - scale - refers to the 6th supralabial reaching the eye in the holotype
mojavensis - Latin - belonging to the Mohave Desert - referring to habitat

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

Alternate Names
None

Related or Similar California Snakes
S. h. hexalepis - Desert Patch-nosed Snake
S. h. virgultea - Coast Patch-nosed Snake
M. f. piceus - Red Coachwhip

More Information and References
Natureserve Explorer

California Dept. of Fish and Game

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

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

Bartlett, R.D. , & Alan Tennant. Snakes of North America - Western Region. Gulf Publishing Co., 2000.

Ernst, Carl H., Evelyn M. Ernst, & Robert M. Corker. Snakes of the United States and Canada. Smithsonian Institution Press, 2003.

Wright, Albert Hazen & Anna Allen Wright. Handbook of Snakes of the United States and Canada. Cornell University Press.

Brown, Philip R. A Field Guide to Snakes of California. Gulf Publishing Co., 1997.

Conservation Status

The following status listings come from the Special Animals List which is published several times each year by the California Department of Fish and Game.

This snake is not included on the Special Animals List, which indicates that there are no significant conservation concerns for it in California.

Organization
Status Listing
U.S. Endangered Species Act (ESA)
California Endangered Species Act (CESA)
California Department of Fish and Game
Bureau of Land Management
USDA Forest Service
Natureserve Global Conservation Status Ranks
World Conservation Union - IUCN Red List





 

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