The coral snakes (Micrurus and Micruroides) are two genera of about 65 snake species, found in tropical South America and southern USA. They are venomous and related to Old World cobras. Most notable are their red, yellow and black colored bands.
The most well-known species is the Western Coral Snake (Micruroides euryxanthus), found in the Sonoran desert and northern Mexico.
Coral snakes can look similar to the Scarlet King Snake.