List of snakes in Colorado

List of snakes in Colorado

This is a list of the known venomous and non-venomous snakes in Colorado, United States.

Non-Venomous Snakes

Blind Snake: Rare(Texas)New Mexican Blind Snake - Leptotyphlops d. dissectus (S.E. CO)

Glossy Snake: SecureKansas Glossy Snake - Arizona e. elegans (E. CO)Painted Desert Glossy Snake - Arizona e. philipi (S.W. CO)

Racer: CommonE. Yellow Bellied Racer - Coluber c. flaviventris (E. CO)W. Yellow Bellied Racer - Coluber c. mormon (W. CO)

Ringneck Snake: SecurePrairie Ringneck Snake - Diadophis p. arnyi (S.E. CO)Regal Ringneck Snake - Diadophis p. regalis (Note noted with hammerson, this could be a possible occurrence in extreme S.W. CO)

Great Plains Ratsnake: Common

Pantherophis g. emoryiPantherophis g. intermontana(Valid subspecies?)

Western Hognose Snake: Nasicus is secure.Plains Hognose Snake - Heterodon n. nasicus (E. CO)E. Hognose Snake - Heterodon platirhinos (Extreme E. CO)

Night Snake: SecureTexas Nightsnake - Hypsiglena t. janii (S.E. CO)Mesa Verde Nightsnake - Hypsiglena t. loreala (W. CO)

Common Kingsnake: UncommonKingsnake Intergrade - Lampropeltis g. hoolbrooki/splendida(Speckled/Desert) S.E. COCalifornia Kingsnake - Lampropeltis g. californiae (Extreme S.W. CO)

Milk Snake: SecureUtah Milksnake - Lampropeltis t. taylori (West-Central CO)Lampropeltis t. taylori/celaenops (Utah/New Mex) S.W. & South-Central COLampropeltis t. multistriata/gentilis(Pale/Central Plains) N.E. COCentral Plains Milksnake - Lampropeltis t. gentilis/ Rest of E. CONote: Could be variants instead of subspecies.

Green Snake: SecureW. Smooth Green Snake - Liochlorophis vernalis blanchardi (Central to Western Slope)

Coachwhip: CommonW. Coachwhip - Masticophis f. testaceus (East to South-Central to Southeastern CO)Red Coachwhip - Masticophis f. piceus ( This snake may occur in extreme S.W. Colorado, but there is no evidence to suggest such. The closest populations are in S.W. Utah."'
Striped Whipsnake: CommonDesert Striped Whipsnake - Masticophis t. taeniatus (W. CO)

Watersnake: SecureNorthern Watersnake - Nerodia s. sipedon (N.E. to S.W. CO)

Bullsnake/Gophersnake: CommonBullsnake - Pituophis c. sayi (Eastern Slope)Great Basin Gophersnake - Pituophis c. deserticola (Western Slope)Sonoran Gophersnake - Pituophis c. affinis ( Intergradation may occur with deserticola in Colorado)

Longnose Snake: UncommonTexas Longnose Snake - Rhinocheilus l. tessellatus (S.E. CO)

Ground Snake: SecureW. Ground Snake - Sonora semiannulata (S.E. CO)Note: This could also occur in N.W. CO.

Black-headed Snake: SecureS.W. Black-headed Snake - Tantilla hobartsmithi (W. CO)Plains Black-headed Snake - Tantilla n. nigriceps (Eastern Slope)

Garter Snake: W. Blackneck Garter Snake - Thamnophis c. cyrtopsis (S.E. to S.W. CO) UncommonWestern Terrestrial Garter Snake - Thamnophis e. vagrans (Most of Colorado) CommonW. Plains Garter Snake - Thamnophis r. haydenii (Eastern Slope) CommonRed Sided Garter Snake - Thamnophis s. parietalis (North-Central to N.E. CO) CommonArid Land Ribbonsnake - Thamnophis p. diabolicus (S.E. CO) RARE!

Brown Snake: Rare(May be extirpated)Texas Brown Snake - Storeria d. texana (This species was reportedly found in Las Animas County by Arthur E. Beardsley(1883). This species may be extirpated, but fieldherping might yield specimens.

Lined Snake - Tropidoclonion l. lineatum (Generally Eastern Slope) Secure

Rubber Boa - Charina bottae (This species may occur in Colorado, but no substantial evidence suggest such, as of yet.)

Updated by: William Huntsman 7/10/08. All info is current and up to date!

Western Rattlesnake: CommonPrairie Rattlesnake(Crotalus v. viridis) Most of the state.Midget Faded Rattlesnake(Crotalus v. concolor) Western Half of state. Note: May intergrade with v. viridis.

Massasauga: SecureWestern Massasauga(Integrade between S.c. edwardsii and S.c.tergeminus)

There is a possibility of another venomous rattlesnake in Colorado, this will be put up soon!Last uptated by: William Huntsman 7/10/08

See also

* [http://ndis.nrel.colostate.edu/wildlifespx.asp?grp=Snakes Colorado State University]
* [http://webspinners.com/coloherp/ Colorado Herpetological Society archives]


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