Regina rigida
Encyclopedia
Regina rigida is a species of snake
endemic to the southeastern United States
. The species contains three subspecies
:
Snake
Snakes are elongate, legless, carnivorous reptiles of the suborder Serpentes that can be distinguished from legless lizards by their lack of eyelids and external ears. Like all squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales...
endemic to the southeastern United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
. The species contains three subspecies
Subspecies
Subspecies in biological classification, is either a taxonomic rank subordinate to species, ora taxonomic unit in that rank . A subspecies cannot be recognized in isolation: a species will either be recognized as having no subspecies at all or two or more, never just one...
:
- Regina rigida deltae (Delta crayfish snake)
- Regina rigida rigida (glossy crayfish snake)
- Regina rigida sinicola (Gulf crayfish snake)