Plains Blind Snake (Leptopyphlops dulcis dulcis)

New Mexico Blind Snake (Leptotyphlops dulcis dissectus)

Trans-Pecos Blind Snake (Leptotyphlops humilis segregus)

2. Family Boidae (Boas and Pythons; 2 N.A. Genre, 2 N.A. species)

    Genus Charina (1 N.A. species)

Rubber boa (Charina bottae)

    Genus Lichanura (1 N.A. species)

Rosy boa (Lichanura trivirgata)

3. Family Colubridae (Colubrids: 280 W.W. genera, 1,600 species, worldwide)

    Genus Arizona (Glossy Snakes: 1 N.A. species w/9 subspecies)

Texas glossy Snake (Arizona elegans arenicola)

     Texas glossy snake (Arizona elegans arenicola) 12 Aug 2004, Frisco TX, S.M.

Western Mojave glossy Snake (Arizona elegans candida)

Desert glossy Snake (Arizona elegans eburnata)

Kansas glossy Snake (Arizona elegans elegans)

Chihuahua glossy Snake (Arizona elegans expolita)

Arizona glossy Snake (Arizona elegans noctivaga)

California Glossy Snake (Arizona elegans occidentalis)

Peninsula glossy Snake (Arizona elegans pacata)

Painted Desert glossy Snake (Arizona elegans philipi)

    Genus Bogertophis (New World Rat Snakes; two N.A. species)

Baja California Rat Snake (Bogertophis rosaliae)

Trans-Pecos Rat Snake (Bogertophis subocularis subocularis)

    Genus Carphophis (Worm Snakes; three N.A. species/subspecies)

Eastern worm snake (Carphophis amoenus amoenus)

Midwestern worm snake (Carphophis amoenus helenae)

Western worm snake (Carphophis vermis)

    Genus Cemophora (Scarlet Snakes; 1 N.A. species; 3 subspecies)

Florida scarlet snake (Cemophora coccinea coccinea)

Northern scarlet snake (Cemophora coccinea copei)

Texas scarlet snake (Cemophora coccinea lineri)

    Genus Chilomeniscus (Sand Snakes; 1 N.A. species; 2 subspecies)

Banded sand snake (Chilomeniscus cinctus)

Variable/Western sand snake (Chilomeniscus stramineus)

    Genus Chionactis (Shovel-nosed Snakes; 2 N.A. species; 4 subspecies)

Western shovel-nosed snake (Chionactis occipitalis)

Colorado shovel-nosed snake (Chionactis occipitalis annulata)

Tucson shovel-nosed snake (Chionactis occipitalis klauberi)

Mojave shovel-nosed snake (Chionactis occipitalis occipitalis)

Sonoran shovel-nosed snake (Chionactis palarostris)

    Genus Clonophis (Monotypic; 1 N.A. species)

Kirtland's snake (Clonophis kirtlandii)

    Genus Coluber (Racers; 1 N.A. species)

Buttermilk racer (Coluber constrictor anthicus)

      Buttermilk racer (Coluber constrictor anthicus)20 May 2007Conroe TX, Al P.

Northern black racer (Coluber constrictor constrictor)

Tan racer (Coluber constrictor ethridgei)

Eastern yellow-bellied racer (Coluber constrictor flaviventris)

Blue racer (Coluber constrictor foxii)

Brown-chin racer (Coluber constrictor helvigularis)

Black-mask racer (Coluber constrictor latrunculus)

Mexican racer (Coluber constrictor oaxaca)

Everglades racer (Coluber constrictor paludicola)

Southern black racer (Coluber constrictor priapus)

     Southern black racer (Coluber constrictor priapus) 23 Mar 2007, Huntsville TX, Bill C.

    Genus Coniophanes (Black-striped Snakes; 1 N.A./U.S. species)

Black-stiped snake (Coniophanes imperalis imperalis)

    Genus Contia (Sharp-tailed Snakes [monotypic]; 1 N.A. species)

Sharp-tailed snake (Contia tenuis)

    Genus Diadophis (Ring-necked Snakes; 1 N.A. species, 14 subspecies)

Prairie ring-necked snake (Diadophis punctatus arnyi)

Regal ring-necked snake (Diadophis punctatus regalis)

Mississippi ring-necked snake (Diadophis punctatus stictogenys)

Pacific ring-necked snake (Diadophis punctatus amabilis)

Key ring-necked snake (Diadophis punctatus acricus)

Todos Santos Island ring-necked snake (Diadophis punctatus anthonyi)

Michoacan ring-necked snake (Diadophis punctatus dugesii)

Northern ring-necked snake (Diadophis punctatus edwardsii)

San Bernardino ring-necked snake (Diadophis punctatus modestus)

Northwestern ring-necked snake (Diadophis punctatus occidentalis)

Coral-belly ring-necked snake (Diadophis punctatus pulchellus)

Southern ring-necked snake (Diadophis punctatus punctatus)

San Diego ring-necked snake (Diadophis punctatus similis)

Monterey ring-necked snake (Diadophis punctatus vandenburghii)

    Genus Drymarchon (Indigo & Cribo Snakes; 5 N.A. species, [disputed] subspecies)

Texas Indigo snake (Drymarchon corais erebennus)

    Genus Drymobius (Neotropical racers; 4 N.A.[1 U.S.] species)

Speckled racer (Drymobius margaritiferus margaritiferus)

    Genus Elaphe (Rat Snakes; 6 N.A. species/subspecies)

     Rat Snake (Elaphe spp.) 30 Jun 2009, Lumberton TX, Meredith C.       

Baird's rat snake (Elaphe bairdii)

Eastern corn snake (Elaphe guttata guttata)

Great Plains rat snake (Elaphe guttata emoryi)

Texas rat snake (Elaphe obsoleta lindheimeri)

      Texas Rat Snake (Elaphe obsoleta lindheimeri) 15 May 2007, Fort Worth TX, Joanne P. 

      Texas Rat Snake (Elaphe obsoleta lindheimeri) 18 May 2007, Lake Austin TX, Karen S. 

      Texas Rat Snake (Elaphe obsoleta lindheimeri) 4 May 2007, Austin TX, Robyn C 

      Texas Rat Snake (Elaphe obsoleta lindheimeri) 4 May 2007, McKinney TX, Jennifer B. 

      Texas Rat Snake (Elaphe obsoleta lindheimeri) 4 May 2007, Tomball TX, Ms. M. 

      Texas Rat Snake (Elaphe obsoleta lindheimeri) 30 Apr 2007, Austin TX, Todd H. 

      Texas Rat Snake (Elaphe obsoleta lindheimeri) 22 Mar 2007, Flower Mound TX, Anne J. 

      Texas Rat Snake (Elaphe obsoleta lindheimeri) 2006, Lake LBJ TX, Gail K.

      Texas Rat Snake (Elaphe obsoleta lindheimeri, juvenile) 8 Oct 2004, Austin TX, Richard D.

      Texas Rat Snake (Elaphe obsoleta lindheimeri) 14 Aug 2004, Austin TXm D.Y. 

      Juvenile Texas Rat Snake (Elaphe obsoleta lindheimeri) Oct 2003, Frisco TX, S.M.

      Texas Rat Snake (Elaphe obsoleta lindheimeri) 12 May 2003, Eustace TX

      Texas Rat Snake (Elaphe obsoleta lindheimeri) 4 Jun 2002, Round Rock TX

      Texas Rat Snake (Elaphe obsoleta lindheimeri) Jul 2001, Round Rock TX 

      Juvenile Texas Rat Snake (Elaphe obsoleta lindheimeri) Temple TX

Black rat snake (Elaphe obsoleta obsoleta)

      Black Rat Snake (Elaphe obsoleta obsoleta) 14 May 2001, Georgeown TX

Yellow rat snake (Elaphe obsoleta quadrivittata)

Everglades rat snake (Elaphe obsoleta rossalleni)

Gray rat snake (Elaphe obsoleta spiloides)

Slowinski's corn snake (Elaphe slowinskii)

Western fox snake (Elaphe vulpina)

Eastern fox snake (Elaphe gloydi)

    Genus Farancia (Mud Snakes; 2 N.A. species)

Western mud snake (Farancia abacura reinwardti)

Eastern mud snake (Faracnia abacura abacura)

Rainbow snake (Faracnia erytrogramma)

    Genus Ficimia (Hook-nosed Snakes; 7 N.A./1 U.S. species)

Mexican hook-nosed snake (Ficimia streckeri)

    Genus Gyalopion (Hook-nosed Snakes; 7 N.A./1 U.S. species)

Western hook-nosed snake (Gyalopion canum)

Desert hook-nosed snake (Gyalopion quadrangulare)

    Genus Heterodon (Hog-nosed Snakes; 3 N.A. species)

Western hog-nosed snake (Heterodon nasicus)

Eastern hog-nosed snake (Heterodon platirhinos)

      Eastern hog-nosed snake (Heterodon platirhinos) 11-18-2003 W. C, New Braunfels, TX

      Eastern Hog-Nosed Snake (Heterodon platirhinos) 03-30-2007 College Station, TX Lorraine E

      Eastern Hog-Nosed Snake (Heterodon platirhinos) 03-15-2007 Cypress, TX, R. Holley 

      Two Eastern Hog-Nosed Snakes Mating - Southwest Montgomery, Texas 03-21-2007 

Southern hog-nosed snake (Heterodon simus)

    Genus Hypsiglena (Night Snakes; 2 N.A./1 U.S. species)

Texas night snake (Hypsiglena torquata jani)

    Genus Lampropeltis (King Snakes & Milk Snakes; 29 N.A. species/subspecies)

Grey-Banded King snake (Lampropeltis alterna)

Prairie King snake (Lampropeltis calligaster calligaster)

South Florida Mole King snake (Lampropeltis calligaster occipitolineata)

Mole King snake (Lampropeltis calligaster rhombomaculata)

California King snake (Lampropeltis getula californiae)

Florida King snake (Lampropeltis getula floridana)

Eastern King snake (Lampropeltis getula getula)

Apalachicola King snake (Lampropeltis getula meansi)

Speckled King snake (Lampropeltis getula holbrooki)

Black King snake (Lampropeltis getula nigrita)

Desert King snake (Lampropeltis getula splendida)

     Desert King Snake (Lampropeltis getula splendida) 24 Apr 2007, Tynan TX, Ken C. 

     Desert King Snake (Lampropeltis getula splendida) 23 Mar 2007, Fort Worth TX, Dede S. 

Isla Santa Catalina King snake (Lampropeltis getula catalinensis)

Florida King snake (Lampropeltis getula floridana)

Mexican King snake (Lampropeltis mexicana leonis)

Durango Mountain King snake (Lampropeltis mexicana gren)

Nuevo Leona King snake (Lampropeltis mexicana thayen)

Utah Mountain King snake (Lampropeltis pyromelana infralabialis)

Sonoran Mountain King snake (Lampropeltis pyromelana knoblochi)

Arizona Mountain King snake (Lampropeltis pyromelana pyromelana)

Ruthven's King snake (Lampropeltis ruthveni)

Louisiana Milk snake (Lampropeltis triangulum amaura)

      Louisiana Milk snake (Lampropeltis triangulum amaura)30 Mar 2007, Conroe TX, Gail & Bill

Mexican Milk snake (Lampropeltis triangulum annulata)

Scarlet King snake (Lampropeltis triangulum elapsoides)

San Pedro King snake (Lampropeltis zonata agalma)

Todos Santos Island King snake (Lampropeltis zonata herrerae)

Sierra Mounain King snake (Lampropeltis zonata multicincta)

Coast Mountain King snake (Lampropeltis zonata multifasciata)

San Diego Mountain King snake (Lampropeltis zonata pulchra)

St. Helena Mountain King snake (Lampropeltis zonata zonata)

    Genus Leptodeira (Cat-eyed Snakes; 1 N.A. species)

Northern cat-eyed snake (Leptodeira septentrionalis septentrionalis)

    Genus Liochlorophis (Smooth Green Snakes; 1 N.A. species)

Western smooth green snake (Liochlorophis vernalis blanchardi)

      Note: Some place the smooth green snake in the genus Opheodrys (q.v.).

    Genus Masticophis (Coachwhips & whip snakes; 4 N.A. species)

Sonoran whip snake (Masticophis bilineatus)

Eastern coachwhip (Masticophis flagellum flagellum)

Western coachwhip (Masticophis flagellum testaceus)

Schott's whip snake (Masticophis schotti schotti)

Ruthven's whip snake (Masticophis schotti ruthveni)

Central Texas whip snake (Masticophis taeniatus girardi)

      Central Texas Whip Snake (Masticophis taeniatus girardi)

    Genus Nerodia (Water snakes; 9 N.A. species)

Salt marsh snake (Nerodia clarki)

Gulf salt marsh snake (Nerodia clarki clarki)

Mississippi green water snake (Nerodia cyclopion)

Plain-bellied water snake (Nerodia erythrogaster)

Yellow-bellied water snake (Nerodia erythrogaster flavigaster)

     Yellow-bellied water snake (Nerodia erythrogaster flavigaster) Jun 18 2004, Huntsville TX, D.CB.

Blotched water snake (Nerodia erythrogaster transversa)

     Blotched Water Snake (Nerodia erythrogaster transversa) 

     Blotched Water Snake (Nerodia erythrogaster transversa) 22 Mar 2007, Temple TX, Molly C. 

     Blotched Water Snake (Nerodia erythrogaster transversa) 3 Jun 2004, Temple TX, J.S. 

Banded water snake (Nerodia fasciata)

Broad-banded water snake (Nerodia fasciata confluens)

     Broad-banded water snakes (Nerodia fasciata confluens) 30 Mar 2007, Katy TX, Christer R.

     Broad-banded water snake (Nerodia fasciata confluens) 29 Mar 2007, The Woodlands TX, Tim T.

Florida water snake (Nerodia fasciata pictiventris)

Brazos water snake (Nerodia harteri harteri)

Concho water snake (Nerodia harteri paucimaculata)

Diamond-backed water snake (Nerodia rhombifer rhombifer)

     Diamond-backed water snake (Nerodia rhombifer rhombifer) 24 Mar 2007, Montgomery Co. TX, Milli Ann D. 

     Diamond-backed Water Snake (Nerodia rhombifer rhombifer) 24 Mar 2007, Austin TX, Kathy B 

     Diamond-backed Water Snake (Nerodia rhombifer rhombifer) Texas- unk location 20-03-2007 

     Diamond-backed Water Snake (Nerodia rhombifer rhombifer) 29 Mar 2007, East TX, John R 

     Diamond-backed Water Snake (Nerodia rhombifer rhombifer) 26 Aug 2004, Haslet TX, A.L. 

Midland water snake (Nerodia sipedon pleuralis)

    Genus Opheodrys (Rough green snakes; 1 N.A. species)

Northern rough green snake (Opheodrys aestivus aestivus)

Florida rough green snake (Opheodrys aestivus carinatus)

      Note: Some classify the smooth green snake (liochlorophis vernalis; q.v.) as Opheodrys vernalis.

    Genus Oxybelis (Vine snakes; 4 N.A. species)

Mexican vine snake (Oxybelis aeneus)

Cope's vine snake (Oxybelis brevirostris)

Green vine snake (Oxybelis fulgidus)

Roatan vine snake (Oxybelis wilsoni)

    Genus Phyllorhynchus (Leaf-nosed snakes; 2 N.A. species)

Saddle leaf-nosed snake (Phyllorhynchus browni)

Spotted leaf-nosed snake (Phyllorhynchus decurtatus)

    Genus Pituophis (Gopher, pine, and bull snakes; 5 N.A. species)

Gopher snake (Pituophis catenifer) 11 recognized subspecies

Sonoran gopher snake (Pituophis catenifer affinis)

Bull snake (Pituophis catenifer sayi)

Louisiana pine snake (Pituophis ruthveni)

    Genus Regina (Crayfish snakes; 4 N.A. species)

Striped crayfish snake (Regina alleni)

Graham's crayfish snake (Regina grahamii)

Glossy crayfish snake (Regina rigida)

Gulf crayfish snake (Regina rigida sinicola)

Queen snake (Regina septemvittata)

    Genus Rhadinaea (New World brown woodland snakes; 45 species)

Pine woods snake (Rhadinaea flavilata)

    Genus Rhinocheilus (Long-nosed snakes; 1 N.A. species; 4 subspecies)

Mexican long-nosed snake (Rhinocheilus lecontei antonii)

Isla Cerralvo long-nosed snake (Rhinocheilus lecontei etheridgi)

Western long-nosed snake (Rhinocheilus lecontei lecontei)

Texas long-nosed snake (Rhinocheilus lecontei tessellatus)

      Texas long-nosed snake (Rhinocheilus lecontei tessellatus), 23 Jul 2007,Baylor Co. TX, John H. R. 

      Texas long-nosed snake (Rhinocheilus lecontei tessellatus), 25 Jul 2004, Katy TX, L.W. 

    Genus Salvadora (Patchnose snakes; 7 N.A. species)

Baird's patchnose snake (Salvadora bairdi)

Big Bend patchnose snake (Salvadora deserticola)

Mountain patchnose snake (Salvadora grahamiae grahamiae)

Texas patchnose snake (Salvadora grahamiae lineata)

Western patchnose snake (Salvadora hexalepis)

Oaxacan patchnose snake (Salvadora inermedia)

Pacific patchnose snake (Salvadora lemniscata)

Mexican patchnose snake (Salvadora mexicana)

    Genus Seminatrix (Swamp snakes; 1 N.A. species; 3 subspecies)

South Florida swamp snake (Seminatrix pygaea cyclas)

Carolina swamp snake (Seminatrix pygaea paludis)

North Florida swamp snake (Seminatrix pygaea pygaea)

    Genus Senticolis (Mountain rat snakes; 1 N.A. species)

Western green rat snake (Senticolis triaspis intermedia)

    Genus Sonora (Ground snakes; 3 N.A. species)

Great Plains ground snake (Sonora semiannulata semiannulata)

      Great Plains ground snake (Sonora semiannulata semiannulata)29 May 2007, El Paso TX, Sean M. 

Taylor's ground snake (Sonora semiannulata taylori)

    Genus Stilosoma (Short-tailed snake; monotypic)

Short-tailed snake (Stilosoma extenuatum)

    Genus Storeria (Brown snakes & redbelly snakes; 4 species)

Northern brown snake (Storeria dekayi dekayi)

Marsh brown snake (Storeria dekayi limnetes)

      Marsh brown snake (Storeria dekayi limnetes) 7 Apr 2007, Hurst TX, Aprile L.

      Marsh brown snake (Storeria dekayi limnetes) 12 Mar 2007, Houston TX, K. Kennerly

Texas brown snake (Storeria dekayi texana)

      Texas Brown Snake (Storeria dekayi texana) 1 Mar 2007, Sugar Land TX, D. Teller

      Texas Brown Snake (Storeria dekayi texana) 2 Sep 2002, Round Rock TX

      Newborn Texas Brown Snake (Storeria dekayi texana) 20 Sep 2002, Round Rock TX

Florida brown snake (Storeria dekayi victa)

Midland brown snake (Storeria dekayi wrightorum)

Mexican yellowbelly brown snake (Storeria dekayi hidalgoensis)

Florida redbelly snake (Storeria occipitomaculata obscura)

Norhern redbelly snake (Storeria occipitomaculata occipitomaculata)

Black Hills redbelly snake (Storeria occipitomaculata pahasapae)

Mexican brown snake (Storeria storerioides)

    Genus Tantilla (Centipede, blackhead, & flathead snakes; 64 species)

Mexican blackhead snake (Tantilla atriceps)

Southeastern crowned snake (Tantilla coronata)

Big Bend blackhead snake (Tantilla cucullata)

Flathead snake (Tantilla gracilis)

Southwestern blackhead snake (Tantilla hobartsmithi)

Plains blackhead snake (Tantilla nigriceps)

Rim Rock crowned snake (Tantilla oolitica)

Western blackhead snake (Tantilla planiceps)

Florida crowned snake (Tantilla relicta)

Chihuahuan blackhead snake (Tantilla wilcoxi)

Yaqui blackhead snake (Tantilla yaquia)

    Genus Thamnophis (Garter & ribbon snakes; 31 species)

Western black-necked garter snake (Thamnophis certopsis cyrtopsis)

Eastern black-necked garter snake (Thamnophis certopsis ocellatus)

      Eastern Black-Necked Garter Snake (Thamnophis cyrtopsis ocellatus)

      Eastern Black-Necked Garter Snake (Thamnophis cyrtopsis ocellatus) 27 Jul 2004, Austin TX, Mark T. 

      Eastern Black-Necked Garter Snake (Thamnophis cyrtopsis ocellatus) 24 Jul 2004, Austin TX, S.W.  

      Eastern Black-Necked Garter Snake (Thamnophis cyrtopsis ocellatus) 24 Apr 2004, Austin TX, E.D.  

Checkered garter snake (Thamnophis marcianus marcianus)

      Checkered garter snake (Thamnophis marcianus marcianus) 20 Ma7 2007, Austin TX, Stacey P.

      Checkered garter snake (Thamnophis marcianus marcianus) 22 Mar 2007, Austin TX, Richard D.

      Checkered garter snake (Thamnophis marcianus marcianus) 17 Mar 2007, Seguin TX, R. Warren

      Checkered garter snake (Thamnophis marcianus marcianus) 21 Jun 2004, Austin TX, Matt G.

Western ribbon snake (Thamnophis proximus proximus)

      Western ribbon snake (Thamnophis proximus proximus) 1 Apr 2007, Montgomery Co. TX, Anita M.

Arid land ribbon snake (Thamnophis proximus diabolicus)

Gulf coast ribbon snake (Thamnophis proximus orarius)

Red-striped ribbon snake (Thamnophis proximus rubrilineatus)

     Red-striped Ribbon Snake (Thamnophis proximus rubrilineatus) 2 Jun 2003, Georgetown TX

Western Plains garter snake (Thamnophis radix haydeni)

Eastern garter snake (Thamnophis sirtalis sirtalis)

Texas garter snake (Thamnophis sirtalis annectans)

Red-sided garter snake (Thamnophis sirtalis parietalis)

    Genus Trimorphodon (Lyre snakes; 2 species, 7 subspecies)

Western lyre snake (Trimorphodon biscutatus biscutatus)

Sonoran lyre snake (Trimorphodon biscutatus lambda)

Baja California lyre snake (Trimorphodon biscutatus lyrophanes)

Texas lyre snake (Trimorphodon biscutatus vilkinsonii)

    Genus Tropidoclonion (Lined snakes; monotypic, 4 subspecies)

Central lined snake (Tropidoclonion lineatum annectens)

Northern lined snake (Tropidoclonion lineatum lineatum)

Merten's lined snake (Tropidoclonion lineatum mertensi)

Texas lined snake (Tropidoclonion lineatum texanum)

     Lined Snake (Tropidoclonion lineatum texanum) May 2002, Temple, TX

    Genus Virginia (Earth snakes; 3 species

Mountain earth snake (Virginia pulchra)

Rough earth snake (Virginia striatula)

      Rough earth snake (Virginia striatula) 7 Apr 2007, Hurst TX, Aprile L.

      Rough earth snake (Virginia striatula) 6 Mar 2007, Austin TX, K. Andrews

      Rough earth snake (Virginia striatula) 22 Feb 2007, Copperas Cove TX, L. Essary

Smooth earth snake (Virginia valeriae)

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B. Venomous Snakes(3 N.A. Families)

Click Here to go to the Non-Venomous Snake Index

1. Family Elapidae (Elapids; 1 N.A. Genus)

    Genus Micrurus (2 N.A. species)

Eastern coral snake (Micrurus tener) 4 N.A.subspecies

Texas coral snake (Micrurus fulvius)

      Texas coral snake (Micrurus fulvius) 16 May 2007, Conroe TX, Kristy A. 

      Texas coral snake (Micrurus fulvius) Aug 2004, Caldwell Co. TX, N. 

2. Family Viperidae (Vipers; 1 N.A. Subfamily)

2.1. Subfamily Crotalinae (Pit vipers) 

    Genus Agkistrodon (Copperheads & Cottonmouths; 2 Texas genre)

Southern Copperhead (Agkistrodon contortrix contortrix)

     Southern Copperhead (Agkistrodon contortrix contortrix) 16 May 2007, Conroe TX, Don A.

     Southern Copperhead (Agkistrodon contortrix contortrix)24 Jul 2004, Huntsville TX, D.B.

Broad-Banded Copperhead (Agkistrodon contortrix liticinctus)

     Broad-Banded Copperhead (Agkistrodon contortrix laticinctus) 2 July 2009, Round Rock TX, Steve B.

Trans-Pecos Copperhead (Agkistrodon contortrix pictigaster)

Western Cottonmouth (Agkistrodon piscivorus leucostoma)

      Western Cottonmouth (Agkistrodon piscivorus leucostoma) 1 Apr 2007 Montgomery Co. TX, Anita M..

    Genus Crotalus (Rattlesnakes; 29 species)