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Wildlife > Reptiles > Snakes

Western Ground Snake
Sonora semiannulata

Family: Colubridae Order: Squamata Class: Reptilia

DISTRIBUTION, ABUNDANCE, AND SEASONALITY

In California, the ground snake is widely distributed in a variety of arid and semiarid habitats in the Mojave and Colorado deserts up to 1400 m (4600 ft) in elevation. It frequents hillsides and flats with or without rocks, usually where there is fine, wind-blown sand. It is found under rocks and other cover objects or at the base of bushes or grass hummocks. In some places, it occurs in thick vegetation (Stickel 1938, 1943, Stebbins 1954). This species is active in spring and summer.

SPECIFIC HABITAT REQUIREMENTS

Feeding: This snake eats spiders, centipedes, crickets, grasshoppers, insect larvae and other arthropods (Stebbins 1954).

Cover: The ground snake makes use of rocks and other ground cover when available, but also occurs in habitats where such cover is rare. Usually it burrows in fine, wind-blown sand at the base of bushes or grass hummocks (Stebbins 1954).

Reproduction: No data.

Water: Permanent water is probably not required.

Pattern: This species occurs at lower elevations in a variety of desert habitats in which fine wind-blown sand is found (Stebbins 1954).

SPECIES LIFE HISTORY

Activity Patterns: Nocturnal, but occasionally individuals are abroad at dusk. Active from spring to late summer.

Seasonal Movements/Migration: This snake probably does not migrate.

Home Range: No data.

Territory: No data.

Reproduction: No data.

Niche: No additional information.


Also See:

Death Valley Snakes
Western Ground Snake Sonora semiannulata ...


REFERENCES

Frost, D. R. 1983. Sonora semiannulata. Cat. Amer. Amphibians and Reptiles 333.

Stebbins, R. C. 1954. Amphibians and reptiles of western North America. McGraw-Hill, New York. 536pp.

Stickel, W. H. 1938. The snakes of the genus Sonora in the United States and lower California. Copeia 1938:182-190.

Stickel, W. H. 1943. The Mexican snakes of the genera Sonora and Chionactis with notes on the status of other colubrid genera. Proc. Biol. Soc. Wash. 56:109-128.39:335-348.

California Department of Fish and Game. California Interagency Wildlife Task Group.

EXTERNAL LINKS

Sonora semiannulata (Western Ground Snake)
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Sonora semiannulata semiannulata - Variable Groundsnake
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Sonora semiannulata - Wikipedia
It is sometimes referred to as the Western Ground Snake, or Variable Ground Snake as its patterning and coloration can vary widely, even within the same ...

Snakes of Texas
... Sonora (Ground Snakes). Sonora semiannulata (Ground Snake). Storeria ...


Western Ground Snake
Photo by Jim Rorabaugh


Western Ground Snake
Photo by Jeff Servoss

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