Summary ⁵

Hypsiglena torquata, commonly known as the night snake, is a species of rear-fanged, colubrid. It is found throughout the southwestern and western United States, as well as in Mexico and British Columbia, Canada. The number of subspecies varies depending on the source, but it is generally accepted that there are 17.

Range description ⁶

The species' range extends from southern British Columbia, Idaho, Utah, Colorado, and Kansas southward through the southwestern United States to southern Baja California (including Isla Partida Norte, in the Gulf of California) and Guerrero in mainland Mexico, at elevations from near sea level to around 2,650 m asl (8,700 feet) (Stebbins 2003). Reports of occurrences as far south as Costa Rica (e.g., Ernst and Ernst 2003) are incorrect (Savage 2002).

Sources and Credits

1. (c) Francisco Farriols Sarabia, some rights reserved (CC BY), uploaded by Francisco Farriols Sarabia
2. (c) James Maughn, some rights reserved (CC BY-NC), http://farm9.staticflickr.com/8011/7169064152_9cc08052ab_o.jpg
3. (c) Diana-Terry Hibbitts, some rights reserved (CC BY-NC), uploaded by Diana-Terry Hibbitts
4. (c) Daniel Montoya Ferrer, some rights reserved (CC BY-NC), uploaded by Daniel Montoya Ferrer
5. (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Hypsiglena_torquata
6. (c) International Union for Conservation of Nature and Natural Resources, some rights reserved (CC BY-NC-SA), http://eol.org/data_objects/34511724

More Info

• iNat taxon page
• Animal Diversity Web
• Biodiversity Heritage Library
• BOLD Systems BIN search
• Global Biodiversity Information Facility (GBIF)
• HerpMapper
• NatureServe Explorer 2.0
• Snake Database
• The Reptile Database
• VertNet

Range Map

(c) Discover Life and original sources, some rights reserved (CC-BY-NC-SA)

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