Desert Nightsnake

About the Desert Nightsnake

Hypsiglena chlorophaea, commonly known as the desert nightsnake, is a species of rear-fanged colubrid snake native to North America. It is found throughout regions of Mexico, the United States, and in a small, isolated population in British Columbia, Canada. Known for its highly secretive, nocturnal nature, it is a mildly venomous species that poses no danger to humans.

The desert nightsnake is a small, slender snake, typically measuring between 30 and 66 cm (12 to 26 inches) in total length. Females are generally longer and heavier than males. Its base coloration ranges from beige or yellowish to grey, overlaid with dark grey-brown blotches that usually form offset pairs down its back. It has three distinct, elongated dark blotches on its neck and behind each eye.

Because of its triangular-shaped head, vertical pupils, and blotched patterning, it is frequently mistaken for a juvenile rattlesnake. However, the desert nightsnake lacks a rattle and possesses smooth dorsal scales. It is an opisthoglyphous (rear-fanged) snake, meaning its enlarged, grooved teeth are located at the back of the upper jaw to help subdue prey.

The desert nightsnake has three... Wikipedia →