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Desert Nightsnake (Hypsiglena chlorophaea)
Snakes Around Las Vegas, Wildlife Around Las Vegas
Night Snake (Hypsiglena torquata)

General Description: Desert Nightsnakes (Hypsiglena chlorophaea) are small, tan or light brown snakes with dark brown blotches down the back. They usually also have large dark spots on the sides of the neck, but sometimes the spots merge to form a dark band, and occasionally they are absent. The head is pointy and triangular. The eyes bulge out, and the pupils are vertical.

Taxonomy: Colubrid Snakes Family (Colubridae). Formerly Hypsiglena torquata.

Technical Description:


Night Snake (Hypsiglena torquata)

Habitat: Desert Nightsnakes occur in a variety of habitats, including rocky and sandy areas from the desert flats to mountain meadows.

Range: Distributed widely across the southern and western U.S. from eastern Washington and eastern California to western Oklahoma and western Texas, south into southern Mexico.


Similar Species:

Comments: Desert Nightsnakes are venomous, but they have fangs in the back of the mouth, and it is unlikely that they would be a problem for a human.

Night Snake (Hypsiglena torquata)

Small tan snake with dark blotches.

Night Snake (Hypsiglena torquata)

Bulging eyes.

Night Snake (Hypsiglena torquata)

Dark band across the neck.

Night Snake (Hypsiglena torquata) This snake was found by Nicholas Grenier near dawn on a (soon to be) hot summer day (in early June) in Creosote scrub. It was a (rhyolite) rocky, sparely vegetated area, 1/4 mile south of some new subdivisions (by Horizon Ridge Rd.) on the edge of the Las Vegas Valley. It was near a wash. Nick was able to approach it and pick it up. It struck once, but then settled down. Nick couldn't tell if it bit him or not.
Night Snake (Hypsiglena torquata) Night Snake (Hypsiglena chlorophaea)
Night Snake (Hypsiglena torquata)
Vertical pupils
Night Snake (Hypsiglena torquata)
In dim light, pupils open wide and appear round like other snakes

Note: All distances, elevations, and other facts are approximate.
copyright; Last updated 120910

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