All 39 snake taxa [1] that are known to naturally occur in Indiana [2] [3] are tabulated below, along with their population ranges in the state, [4] [5] conservation status, [6] [7] and level of danger they pose to humans (upon biting them). [4]
Photo | Scientific Name | Common Name | State Distribution | Conservation Status | Threat to Humans |
---|---|---|---|---|---|
Agkistrodon contortrix mokasen | Northern Copperhead | southern 1/2 | unknown | moderate | |
Agkistrodon piscivorus leucostoma | Western Cottonmouth | Dubois and Harrison counties | state endangered | high | |
Carphophis amoenus helenae | Midwestern Worm Snake | southern 1/2 | unknown | minimal | |
Cemophora coccinea copei | Northern Scarlet Snake | Floyd county | state endangered | minimal | |
Clonophis kirtlandii | Kirtland's Snake | everywhere but southwest | state endangered | minimal | |
Coluber constrictor foxii | Blue Racer | northern 2/3 | common | minimal | |
Coluber constrictor priapus | Southern Black Racer | southern 1/3 | common | minimal | |
Crotalus horridus | Timber Rattlesnake | southern 1/3 | state endangered | very high | |
Diadophis punctatus edwardsii | Northern Ringneck Snake | everywhere but central 2/3 | uncommon | minimal | |
Farancia abacura reinwardtii | Western Mud Snake | southwestern tip | state endangered (extirpated) | minimal | |
Heterodon platirhinos | Eastern Hognose Snake | throughout | uncommon | minimal | |
Lampropeltis calligaster calligaster | Prairie Kingsnake | southwest, southcentral, and along western border | uncommon | minimal | |
Lampropeltis nigra | Black Kingsnake | southwestern 1/3 | common | minimal | |
Lampropeltis triangulum syspila | Red Milk Snake | southwest | common | minimal | |
Lampropeltis triangulum triangulum | Eastern Milk Snake | everywhere but southwest | common | minimal | |
Nerodia erythrogaster neglecta | Copperbelly Water Snake | southern 1/3 and northeast corner | state endangered, federally threatened | minimal | |
Nerodia rhombifer rhombifer | Northern Diamondback Water Snake | southwestern corner | abundant | minimal | |
pic unavailable | Nerodia sipedon pleuralis | Midland Water Snake | southern 1/2 | common | minimal |
Nerodia sipedon sipedon | Northern Water Snake | throughout | common | minimal | |
Opheodrys aestivus aestivus | Northern Rough Green Snake | southern 1/3 | special concern | minimal | |
Opheodrys vernalis blanchardi | Western Smooth Green Snake | northwest | state endangered | minimal | |
Pantherophis obsoletus | Black Rat Snake | throughout | common | minimal | |
Pantherophis ramspotti | Western Fox Snake | northwestern corner | uncommon | minimal | |
Pantherophis spiloides | Gray Rat Snake | southwestern corner | common | minimal | |
Pituophis catenifer sayi | Bullsnake | northwest | uncommon | minimal | |
Regina septemvittata | Queen Snake | everywhere but southwestern corner | uncommon | minimal | |
Sistrurus catenatus catenatus | Eastern Massasauga Rattlesnake | northern 1/3 | state endangered, federal candidate | high | |
Storeria dekayi dekayi | Northern Brown Snake | northeast corner | abundant | minimal | |
pic unavailable | Storeria dekayi wrightorum | Midland Brown Snake | throughout | abundant | minimal |
Storeria occipitomaculata occipitomaculata | Northern Redbelly Snake | everywhere but central 2/3 | uncommon | minimal | |
Tantilla coronata | Southeastern Crowned Snake | Floyd and Clark counties | state endangered | minimal | |
Thamnophis butleri | Butler's Garter Snake | northeast | state endangered | minimal | |
Thamnophis proximus proximus | Western Ribbon Snake | everywhere but southeast and eastcentral | special concern | minimal | |
Thamnophis radix | Plains Garter Snake | northwest | uncommon | minimal | |
Thamnophis saurita saurita | Eastern Ribbon Snake | southwest and southcentral | common | minimal | |
pic unavailable | Thamnophis saurita septentrionalis | Northern Ribbon Snake | northern 2/3 | common | minimal |
pic unavailable | Thamnophis sirtalis semifasciatus | Chicago Garter Snake | Porter county | unknown | minimal |
Thamnophis sirtalis sirtalis | Eastern Garter Snake | throughout | abundant | minimal | |
pic unavailable | Virginia valeriae elegans | Western Earth Snake | southwestern 1/3 | uncommon | minimal |
Garter snake is a common name for generally harmless, small to medium-sized snakes belonging to the genus Thamnophis in the family Colubridae. Native to North and Central America, species in the genus Thamnophis can be found from the subarctic plains of Canada to Costa Rica.
The smooth green snake is a species of North American nonvenomous snake in the family Colubridae. The species is also referred to as the grass snake. It is a slender, "small medium" snake that measures 36–51 cm (14–20 in) as an adult. It gets its common name from its smooth dorsal scales, as opposed to the rough green snake, which has keeled dorsal scales. The smooth green snake is found in marshes, meadows, open woods, and along stream edges, and is native to regions of Canada, the United States, and northern Mexico. A non-aggressive snake, it seldom bites and usually flees when threatened. It mates in late spring to summer, and females lay their eggs from June to September. Smooth green snakes will often bob their heads in order to mimic vegetation blowing in the wind.
The eastern massasauga is a rattlesnake species found in central and eastern North America from southern Ontario in Canada and throughout the Midwestern and Eastern United States. Like all rattlesnakes, it is a pit viper and is venomous.
The timber rattlesnake, canebrake rattlesnake, or banded rattlesnake is a species of pit viper endemic to eastern North America. Like all other pit vipers, it is venomous, with a very toxic bite. C. horridus is the only rattlesnake species in most of the populous Northeastern United States and is second only to its relatives to the west, the prairie rattlesnake, as the most northerly distributed venomous snake in North America. No subspecies are currently recognized.
Tropidoclonion is a genus of snake in the subfamily Natricinae of the family Colubridae. The genus is monotypic, containing the sole species Tropidoclonion lineatum, commonly known as the lined snake. The species is endemic to North America.
Cemophora coccinea, commonly known as the scarlet snake, is a species of nonvenomous snake in the family Colubridae. The species is native to the southeastern United States. There are two subspecies of C. coccinea that are recognized as being valid. The Texas scarlet snake was previously considered a subspecies.
The eastern racer is a species of nonvenomous snake in the family Colubridae. The species is endemic to North America and Central America. Eleven subspecies, including the nominotypical subspecies, are recognized, which as a group are commonly referred to as the eastern racers. The species is monotypic in the genus Coluber.
Thamnophis saurita, also known as the eastern ribbon snake, common ribbon snake, or simply ribbon snake, is a common species of garter snake native to Eastern North America. It is a non-venomous species of snake in the subfamily Natricinae of the family Colubridae. The ribbon snake averages 16 to 35 inches in total length. It is dark brown with bright yellow stripes. The ribbon snake is not sexually dimorphic; however, females are normally thicker than their male counterparts.
Nerodia rhombifer, commonly known as the diamondback water snake, is a species of nonvenomous natricine colubrid endemic to the central United States and northern Mexico. There are three recognized subspecies of N. rhombifer, including the nominotypical subspecies.
The smooth earth snake is a species of nonvenomous natricine colubrid snake native to the eastern half of the United States.
Storeria dekayi, commonly known as De Kay's brown snake, De Kay's snake, and simply the brown snake, is a small non-venomous species of snake in the family Colubridae. The species is native to North America and Central America.
Butler's garter snake is a species of garter snake in the family Colubridae. The species is endemic to North America.
Agkistrodon contortrix mokasen was formerly a venomous pit viper subspecies found in the eastern United States. However, recent taxonomic changes do not recognize the northern copperhead as a valid taxon.
Kirtland's snake is a threatened or endangered North American species of nonvenomous snake of the subfamily Natricinae, of the family Colubridae. It is the only species in the genus Clonophis.
Lampropeltis getula, commonly known as the eastern kingsnake, common kingsnake, or chain kingsnake, is a harmless colubrid species endemic to the United States and Mexico. It has long been a favorite among collectors. Nine subspecies are currently recognized, including the nominate subspecies described here.
The southeastern crown snake is a common species of small colubrid snake endemic to the southeastern United States.
The pine woods snake, also commonly known as the yellow-lipped snake or the brown-headed snake, is a species of secretive colubrid found in scattered locations across the south-eastern United States. Rhadinaea flavilata is rear-fanged and mildly-venomous, but not dangerous to humans.
Thamnophis proximus, commonly known as the western ribbon snake, is a species of garter snake in the subfamily Natricinae of the family Colubridae. The species is endemic to the western United States, Mexico, and Central America. The species has six recognized subspecies.
The common watersnake is a species of large, nonvenomous, common snake in the family Colubridae. The species is native to North America. It is frequently mistaken for the venomous cottonmouth.
The bullsnake is a large, nonvenomous, colubrid snake. It is a subspecies of the gopher snake. The bullsnake is one of the largest/longest snakes of North America and the United States, reaching lengths up to 8 ft.