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Reptiles of the United States  
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A Guide to the Reptiles &
Amphibians of the United States
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Snakes of the U.S.

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Abbreviation Legend

  • (CE) - Criticially Endangered
  • (CI) - Critically Imperiled
  • (E) - Endangered
  • (I) - Introduced
  • (IM) - Imperiled
  • (NT) - Near Threatened
  • (T) - Threatened
  • (V) - Vulnerable
  • (**) - Recent Classification Change
Home »» State Directory »» Reptiles & Amphibians of Iowa »» Snakes of Iowa


Snakes of Iowa

There are 29 species/subspecies, representing 16 genus, found in Iowa, all of which are native to the United States.



Eastern Copperhead
(Askistrodon contortrix)

Western Worm Snake
(Carphophis vermis)

Eastern Yellow-Bellied Racer
(Coluber constrictor flaviventris)

Blue Racer
(Coluber constrictor foxii)

Timber Rattlesnake
(Crotalus horridus)

Prairie Rattlesnake
(Crotalus viridis)

Ringneck Snake
(Diadophis punctatus)

Plains Hognose Snake
(Heterodon nasicus)

Eastern Hognose Snake
(Heterodon platirhinos)
(**)

Prairie Kingsnake
(Lampropeltis calligaster)

Speckled Kingsnake
(Lampropeltis holbrooki)

Eastern Milk Snake
(Lampropeltis triangulum)

Plain-Bellied Water Snake
(Nerodia erythrogaster)

Northern Diamondback Water Snake
(Nerodia rhombifer rhombifer)

Northern Water Snakes
(Nerodia sipedon sipedon)

Smooth Green Snake
(Ospheodrys vernalis)

Western Rat Snake
(Pantherophis obsoletus)

Western Fox Snake
(Pantherophis ramspotti)

Graham's Crayfish Snake
(Regina grahamii)

Western Massasauga
(Sistrurus tergeminus)

Dekay's Brown Snake
(Storeira dekayi)

Northern Red-Bellied Snake
(Storeria occipitomaculata occipitomaculata)

Western Ribbon Snake
(Thamnophis proximus)

Plains Garter Snake
(Thamnophis radix)

Red-Sided Garter Snake
(Thamnophis sirtalis parietalis)

Eastern Garter Snake
(Thamnophis sirtalis sirtalis)

Lined Snake
(Tropidoclonion lineatum)

Western Earth Snake
(Virginia valeriae elegans)

Eastern Earth Snake
(Virginia valeriae valeriae)
 

 

 

 

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