| Regina | |
|---|---|
 | |
| Regina septemvittata , queen snake | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Squamata |
| Suborder: | Serpentes |
| Family: | Colubridae |
| Subfamily: | Natricinae |
| Genus: | Regina Baird & Girard, 1853 |
Regina is a genus of semiaquatic natricine colubrid snakes known as crayfish snakes, named after their primary choice of diet. The genus consists of two species which are found in the eastern and central United States.
The following two species are recognized as being valid. [1]
Both species in the genus Regina have keeled dorsal scales in 19 rows at midbody, and a divided anal plate. The crayfish snakes of the genus Regina have smaller heads than the water snakes of the genus Nerodia . [2]
Rena dulcis, also known commonly as the Texas blind snake, the Texas slender blind snake, or the Texas threadsnake, is a species of snake in the family Leptotyphlopidae. The species is endemic to the Southwestern United States and adjacent northern Mexico. Three subspecies are currently recognized, including the nominate subspecies described here.
Pantherophis vulpinus, commonly known as the foxsnake or the eastern fox snake, is a species of nonvenomous rat snake in the family Colubridae. The species is native to North America.
The long-nosed snake is a species of nonvenomous snake in the family Colubridae. The species is endemic to North America. It has two recognized subspecies. The other species in the genus were previously considered subspecies.
Masticophis is a genus of colubrid snakes, commonly referred to as whip snakes or coachwhips, which are endemic to the Americas. They are characterized by having a long, thin body and are not dangerous to humans.
Nerodia is a genus of nonvenomous colubrid snakes commonly referred to as water snakes due to their aquatic behavior. The genus includes nine species, all native to North America. Five of the species have recognized subspecies.
Sonora is a genus of small harmless colubrid snakes commonly referred to as ground snakes, which are endemic to North America.
Salvadora is a genus of colubrid snakes commonly called patchnose snakes or patch-nosed snakes, which are endemic to the western United States and Mexico. They are characterized by having a distinctive scale on the tip of the snout.
Storeria is a genus of snakes in the subfamily Natricinae of the family Colubridae. The genus is endemic to North America and Central America. The genus consists of five species, four of which are known as brown snakes, and one of which is known as the redbelly snake.
The Natricinae are a subfamily of colubroid snakes, sometimes referred to as a family (Natricidae). The subfamily comprises 36 genera. Members include many very common snake species, such as the European grass snakes, and the North American water snakes and garter snakes. Some Old World members of the subfamily are known as keelbacks, because their dorsal scales exhibit strong keeling.
Rhinocheilus is a genus of snakes, commonly called the long-nosed snakes, in the family Colubridae. The genus is native to the western United States and Mexico.
Pantherophis emoryi, commonly known as the Great Plains rat snake, is a species of nonvenomous rat snake in the family Colubridae. The species is native to the central part of the United States, from Missouri to Nebraska, to Colorado, south to Texas, and into northern Mexico.
The smooth earth snake is a species of nonvenomous natricine colubrid snake native to the eastern half of the United States.
The checkered garter snake is a species of garter snake in the subfamily Natricinae of the family Colubridae. The species is endemic to the southwestern United States, Mexico, and Central America.
Regina grahamii, commonly known as Graham's crayfish snake, is a species of nonvenomous semiaquatic snake in the subfamily Natricinae of the family Colubridae. The species is endemic to the central United States.
The crayfish snake, also known commonly as the glossy crayfish snake, the glossy swampsnake, the glossy water snake, and the striped water snake, is a species of semiaquatic snake in the subfamily Natricinae of the family Colubridae. The species is endemic to the southeastern United States, and preys mainly on crayfish.
Rena is a genus of snakes in the family Leptotyphlopidae. The genus is endemic to the New World. All of the species were previously placed in the genus Leptotyphlops.
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.
The striped whipsnake is a species of nonvenomous snake in the family Colubridae. It is closely related to the California whipsnake. The striped whipsnake is native to the western United States and adjacent northern Mexico.
Nerodia clarkii clarkii, the Gulf salt marsh snake, is a subspecies of N. clarkii that is indigenous to the south-eastern United States. It is a nonvenomous, colubrid snake that inhabits coastal salt marshes and brackish estuaries along the coast of the Gulf of Mexico from Florida to Texas.
Salvadora grahamiae, also known commonly as the eastern patch-nosed snake and the mountain patchnose snake, is a species of snake in the family Colubridae. The species is native to the southwestern United States and adjacent northeastern Mexico.
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