List of snakes of Illinois

Snake species known to be found in the U.S. state of Illinois.[1] Conservation concerns and listed statuses come from the Illinois Endangered Species Protection Board's February 2011 Checklist of Endangered and Threatened Animals and Plants of Illinois and the Illinois Natural History Survey's website.[1][2]

Image Scientific name Common name Family Venomous Conservation
concern 		Range
Agkistrodon contortrix contortrix southern copperhead Viperidae Yes Locally abundant (range of species, not subspecies)
Agkistrodon contortrix mokeson northern copperhead
highland moccasin 		Viperidae Yes Locally abundant (range of species, not subspecies)
Agkistrodon piscivorus leucostoma western cottonmouth
water moccasin 		Viperidae Yes Locally abundant
Carphophis amoenus helenae midwestern worm snake Colubridae No Locally abundant
Carphophis vermis midwestern worm snake Colubridae No Locally abundant Not available.
Clonophis kirtlandii Kirtland's snake Colubridae No State Threatened
Cemophora coccinea copei northern scarlet snake Colubridae No Current existence in IL uncertain. Single specimen vouchered in 1942.
Coluber constrictor foxii blue racer Colubridae No (range of species, not subspecies)
Coluber constrictor priapus southern black racer Colubridae No Locally common (range of species, not subspecies)
Crotalus horridus timber rattlesnake
canebrake rattlesnake 		Viperidae Yes State Threatened
Diadophis punctatus arnyi prairie ringneck snake Colubridae No Locally abundant (range of species, not subspecies)
Diadophis punctatus edwardsii northern ringneck snake Colubridae No Locally abundant (range of species, not subspecies)
Diadophis punctatus stictogenys Mississippi ringneck snake Colubridae No Locally abundant (range of species, not subspecies)
Farancia abacura reinwardtii western mud snake Colubridae No Rarely seen
Heterodon nasicus gloydi dusty hognose snake Colubridae No (range of species, not subspecies)
Heterodon nasicus nascius plains hognose snake Colubridae No State Threatened (range of species, not subspecies)
Heterodon platirhinos eastern hognose snake Colubridae No Locally common
Lampropeltis calligaster calligaster prairie kingsnake Colubridae No Locally common
Lampropeltis getula holbrooki speckled kingsnake Colubridae No Locally common (range of species, not subspecies)
Lampropeltis getula niger black kingsnake Colubridae No Locally common (range of species, not subspecies)
Lampropeltis triangulum triangulum eastern milk snake Colubridae No Not commonly seen (range of species, not subspecies)
Lampropeltis triangulum syspila red milk snake Colubridae No Not commonly seen (range of species, not subspecies)
Masticophis flagellum flagellum eastern coachwhip Colubridae No State Endangered
Nerodia cyclopion Mississippi green water snake Colubridae No State Threatened
Nerodia erythrogaster flavigaster yellowbelly water snake Colubridae No (range of species, not subspecies)
Nerodia erythrogaster neglecta copperbelly water snake Colubridae No "protected as though it were listed in Illinois"[1] (range of species, not subspecies)
Nerodia fasciata confluens broad-banded water snake Colubridae No State Endangered
Nerodia rhombifer diamondback water snake Colubridae No Locally common
Nerodia sipedon pleuralis midland water snake Colubridae No (range of species, not subspecies)
Nerodia sipedon sipedon northern water snake Colubridae No Abundant (range of species, not subspecies)
Opheodrys aestivus rough green snake Colubridae No Locally abundant
Opheodrys vernalis smooth green snake Colubridae No Not abundant
Pantherophis emoryi Great Plains ratsnake Colubridae No State Endangered
Pantherophis spiloides gray ratsnake Colubridae No Locally common
Pantherophis vulpina Western fox snake Colubridae No Locally common
Pituophis catenifer sayi gophersnake
bullsnake 		Colubridae No Locally common Not available.
Pituophis melanoleucus melanoleucus northern pine snake Colubridae No
Regina grahamii Graham's crayfish snake Colubridae No Widespread but uncommon
Regina septemvittata queen snake Colubridae No Locally abundant
Sistrurus catenatus catenatus Eastern massasauga Viperidae Yes
Storeria dekayi wrightorum midland brown snake
De Kay's brown snake 		Colubridae No Common
Storeria occipitomaculata occipitomaculata northern redbelly snake Colubridae No Locally abundant
Tantilla gracilis flat-headed snake Colubridae No State Threatened
Thamnophis proximus proximus western ribbon snake Colubridae No Locally common
Thamnophis radix plains ribbon snake Colubridae No Common in north half of state
Thamnophis sauritus sauritus eastern ribbon snake Colubridae No State Threatened (range of species, not subspecies)
Thamnophis sauritus septentrionalis northern ribbon snake Colubridae No (range of species, not subspecies)
Thamnophis sirtalis semifasciatus Chicago garter snake Colubridae No (range of species, not subspecies)
Thamnophis sirtalis sirtalis common garter snake Colubridae No Common (range of species, not subspecies)
Tropidoclonion lineatum lineatum northern lined snake Colubridae No State Threatened
Virginia valeriae elegans western earth snake Colubridae No Locally common

References

  1. 1 2 3 "Illinois Herpetology Species List". Illinois Natural History Survey. Retrieved June 16, 2012.
  2. ↑ "Checklist of Endangered and Threatened Animals and Plants of Illinois" (PDF). Illinois Endangered Species Protection Board. Retrieved June 17, 2012.
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