CaliforniaHerps.com

California Snakes Range Maps

A Guide to the Amphibians and Reptiles of California

These maps illustrate the general historic range of indigenous and alien snakes in California.

Red, or another color indicated below the map, shows this distribution. Snakes of the species or subspecies shown are expected to be found within the illustrated area in places where suitable habitat and conditions occur. In some cases, the current range may be fragmented or considerably diminished from the range illustrated here.

Click on the name link for pictures and information about a particular snake.

Click on a map for a larger view

Range Map Range Map Range Map
Rubber Boa Rosy Boa Glossy Snake
Red: Charina bottae - Northern Rubber Boa

Blue & Orange: Charina umbratica - Southern Rubber boa

Blue: Lichanura trivirgata - Rosy Boa

(Lichanura trivirgata roseofusca -  Coastal Rosy Boa)

Red: Lichanura orcutti - Northern Three-lined Boa

(Lichanura trivirgata roseofusca -  Coastal Rosy Boa
and Lichinura trivirgata gracia - Desert Rosy Boa)
Red: Arizona elegans eburnata - Desert Glossy Snake

Orange: Arizona elegans occidentalis - California Glossy Snake

Purple=: Arizona elegans candida - Mojave Glossy Snake
     
Range Map Range Map Range Map
Baja California Ratsnake Shovel-nosed Snake Western Yellow-bellied Racer
Red dot: Bogertophis rosaliae - Baja California Ratsnake Blue: Chionactis occipitalis annulata -
 Colorado Desert Shovel-nosed Snake
 

Red: Chionactis occipitalis occipitalis -
 Mohave Shovel-nosed Snake

Orange: Chionactis occipitalis talpina -
 Nevada Shovel-nosed Snake
Red: Coluber constrictor mormon -
Western Yellow-bellied Racer
     
Range Map Range Map Range Map
Coachwhip Baja California Coachwhip Striped Racer
Red: Coluber flagellum piceus -  Red Racer

(Masticophis flagellum piceus
) (Red Coachwhip)

Orange: Coluber flagellum ruddocki - San Joaquin Coachwhip

(Masticophis flagellum ruddocki
)
Dark Blue: Coluber fuliginosus - Baja California Cochwhip

(Masticophis fuliginosus)
Red: Coluber lateralis lateralis - California Striped Racer

(Masticophis lateralis lateralis)

Blue: Coluber lateralis euryxanthus  - Alameda Striped Racer

(Masticophis lateralis euryxanthus
)
     
Range Map Sharp-tailed Snakes Range Map Range Map
Desert Striped Whipsnake Sharp-tailed Snake Ring-necked Snake
Red: Coluber taeniatus taeniatus - Desert Striped Whipsnake

(Masticophis taeniatus taeniatus)
Orange: Contia longicauda - Forest Sharp-tailed Snake 

Red:  Contia tenuis - Sharp-tailed Snake
Red:  Diadophis punctatus amabilis -  
Pacific Ring-necked Snake


Light Blue: Diadophis punctatus  modestus -
 San Bernardino Ring-necked Snake


Orange: Diadophis punctatus.  occidentalis -
 Northwestern Ring-necked Snake


Purple:  Diadophis punctatus pulchellus-
 Coral-bellied Ring-necked Snake


Black:  Diadophis punctatus regalis  -
Regal Ring-necked Snake


Blue: Diadophis punctatus similis -
 San Diego Ring-necked Snake


Gray: Diadophis punctatus  vandenburghi -
 Monterey Ring-necked Snake


Yellow: General area of intergradation
     
Range Map Range Map Range Map
Nightsnake California Kingsnake California Mountain Kingsnake
Purple: Hypsiglena torquata nuchalata -  
California Nightsnake


Red: Hypsiglena torquata deserticola -
Desert Nightsnake


Orange: Hypsiglena ochrorhyncha klauberi -
San Diego Nightsnake
Red: Lampropeltis californiae - California Kingsnake

Currently no subspecies of this snake are recognized. This map illustrates the complete range of the species divided into the ranges of the formerly recognized subspecies.

Brown: Lampropeltis zonata multicincta  -
Sierra Mountain Kingsnake

Orange: Lampropeltis zonata  multifasciata -
 Coast Mountain Kingsnake


Light Blue: Lampropeltis zonata  parvirubra -
 San Bernardino Mountain Kingsnake

Purple: Lampropeltis zonata pulchra -
 San Diego Mountain Kingsnake


Red: Lampropeltis zonata zonata -
 St. Helena Mountain Kingsnake


Yellow: General area of intergradation

     
Range Map Range Map Range Map
Leaf-nosed Snake Gopher Snake Long-nosed Snake
Red: Phyllorhynchus decurtatus - Leaf-nosed Snake Purple: Pituophis catenifer affinis -
Sonoran Gopher Snake


Orange: Pituophis catenifer annectens -
San Diego Gopher Snake


Red: Pituophis catenifer catenifer -
Pacific Gopher Snake


Blue: Pituophis catenifer deserticola -
Great Basin Gopher Snake


Light Green: Pituophis catenifer pumilis -
Santa Cruz Island Gopher Snake

Yellow: General area of intergradation

Red: Rheinocheilus lecontei - Long-nosed Snake
     
Range Map Range Map Range Map
Patch-nosed Snake Variable Groundsnake Smith's Black-headed Snake
Red: S. h. hexalepis -
 Desert Patch-nosed Snake


Purple: S. h. mojavensis -
 Mohave Patch-nosed Snake

Orange: S. h. virgultea -
 Coast Patch-nosed Snake


Violet: Old unconfirmed S. h. virgultea sight record
Red: Sonora semiannulata semiannulata -
Variable Groundsnake
Red: Tantilla hobartsmithi - Smith's Black-headed Snake
     
Range Map Range Map Range Map
Western Black-headed Snake Aquatic Gartersnake Sierra Gartersnake
Red: Tantilla planiceps - Western Black-headed Snake Red: Thamnophis atratus atratus -
 Santa Cruz Gartersnake


Orange: Thamnophis atratus hydrophilus -
Oregon Gartersnake

Light Blue: Thamnophis atratus zaxanthus -
Diablo Range Gartersnake


Yellow: T. a. hydrophilus x T. a. atratus x T. a. zaxanthus Intergrades

Blue: T. a. atratus x T. a. zaxanthus intergrades
Red: Thamnophis couchii - Sierra Gartersnake
     
Range Map Range Map Range Map
Terrestrial Gartersnake Giant Gartersnake Two-striped Gartersnake
Red: Thamnophis elegans elegans -
 Mountain Gartersnake

Purple: Thamnophis elegans terrestris -
 Coast Gartersnake


Orange: Thamnophis elegans vagrans -
 Wandering Gartersnake

Gold: General area of intergradation
Thamnophis gigas - Giant Gartersnake

Red: Current and historic range
Yellow: Historic range
Red: Thamnophis hammondii - Two-striped Gartersnake
     
Range Map Range Map Range Map
Marcy's Checkered Gartersnake Northwestern Gartersnake Common Gartersnake
Red: Thamnophis marcianus marcianus -
Marcy's Checkered Gartersnake
Red: Thamnophis ordinoides - Northwestern Gartersnake Orange: Thamnophis sirtalis fitchi - Valley Gartersnake

Red: Thamnophis sirtalis infernalis -
 California Red-sided Gartersnake


Purple: South Coast Gartersnake

Blue: Thamnophis sirtalis tetrataenia -
San Francisco Gartersnake
     
Range Map Range Map Range Map
Lyresnake Western Diamond-backed Rattlesnake Sidewinder
Orange: Trimorphodon lambda  - Sonoran Lyresnake

Red: Trimorphodon lyrophanes - California Lyresnake
Red: Crotalus atrox - Western Diamond-backed Rattlesnake Red: Crotalus cerastes cerastes -
Mohave Desert Sidewinder


Orange: Crotalus cerastes laterorepens -
Colorado Desert Sidewinder
     
Range Map Range Map Range Map
Speckled Rattlesnake and Panamint Rattlesnake Western Rattlesnake Red Diamond Rattlesnake
Red: Crotalus mitchellii pyrrhus -
Southwestern Speckled Rattlesnake


Orange: Crotalus stephensi -
Panamint Rattlesnake
Blue: Crotalus oreganus helleri - Southern Pacific Rattlesnake

Orange: Crotalus oreganus lutosus - Great Basin Rattlesnake

Red: Crotalus oreganus oreganus - Northern Pacific Rattlesnake
Red: Crotalus ruber - Red Diamond Rattlesnake
     
Range Map Range Map Range Map
Northern Mohave Rattlesnake Western Threadsnake Yellow-bellied Sea Snake
Red: Crotalus scutulatus scutulatus -
Northern Mohave Rattlesnake
Orange: Rena humilis cahuilae - Desert Threadsnake

(Leptotyphlops humilis cahuilae - Desert Blindsnake)

Red: Rena humilis humilis - Southwestern Threadsnake

(Leptotyphlops humilis humilis - Southwestern Blindsnake)
Red: Pelamis platurus - Yellow-bellied Sea Snake
     

Alien Species

     
Range Map Range Map Range Map
Brahminy Blindsnake Florida Watersnake Northern Watersnake
Red dot: Ramphotyphlops braminus - Brahminy Blindsnake

Red dots: Nerodia fasciata pictiventris - Florida Watersnake



Red dot: Nerodia sipedon - Northern Watersnake










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