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Reptiles of the United States  
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Home »» Snakes »» Colubridae (Colubrids) »» Chihuahuan Night Snake (Hypsiglena jani)


Chihuahuan Night Snake (Hypsiglena jani)STATUS





Description: H. jani grows from 10 to 16 inches in total length (including tail), record 20 inches. It is typically a light gray or tan in color, with dark brown or dark gray blotching down the back, and has an unmarked underside. It has smooth dorsal scales. The eye has a vertically elliptical pupil. H. jani is rear-fanged, and is considered to be venomous, though it is not dangerous to humans.


Habitat: H. jani prefers semi-arid habitats with rocky soils.


Range: H. jani ranges from southern Kansas to southern Colorado, and south throughout New Mexico, the western half of Texas to central Mexico.


Found in these States: AZ | CO | KS | NM | OK | TX


Diet: The diet of H. jani consists of primarily lizards, but it will also eat smaller snakes and occasionally soft bodied insects.


Reproduction: H. jani is an oviparous species that breeds in the spring rainy season, laying 4-6 eggs that take approximately 8 weeks to incubate before hatching. The eggs average 1.1 inches long by 3/8 inches wide. The hatchlings are about 5.9 inches in total length.


Status: Listed as Least Concern in view of the wide distribution, large number of locations, presumed large population, lack of major threats, and because it is unlikely to be declining fast enough to qualify for listing in a more threatened category.


Subspecies: Three with just one found in our range:
   Tamaulipas Nightsnake - (Hypsiglena jani dunklei)
   San Luis Potosi Nightsnake - (Hypsiglena jani jani)
   Texas Nightsnake - (Hypsiglena jani texana)


Taxonomy:

»» Kingdom: Animalia - Animals
   »» Phylum: Chordata - Chordates
     »» Subphylum: Vertebrata - Vertebrates
       »» Class: Reptilia - Reptiles
         »» Order: Squamata - Scaled Reptiles
           »» Suborder: Serpentes
             »» Superfamily: Colubroidea
               »» Family: Colubridae - Colubrids
                   »» Genus: Hypsiglena
                     »» Species: Hypsiglena jani - Chihuahuan Night Snake

This article uses material from the Wikipedia article "Hypsiglena jani", which is released under the Creative Commons Attribution-Share-Alike License 3.0. Content may have been omitted from the original, but no content has been changed or extended.

 

 

 

 


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COLUBRID SNAKES SNAKE PET CARE BOOK     American Snakes     Snakes of the United States and Canada: Natural History and Care in Captivity     Snakes of the Eastern United States


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Disclaimer: ITIS taxonomy is based on the latest scientific consensus available, and is provided as a general reference source for interested parties. However, it is not a legal authority for statutory or regulatory purposes. While every effort has been made to provide the most reliable and up-to-date information available, ultimate legal requirements with respect to species are contained in provisions of treaties to which the United States is a party, wildlife statutes, regulations, and any applicable notices that have been published in the Federal Register. For further information on U.S. legal requirements with respect to protected taxa, please contact the U.S. Fish and Wildlife Service.

 
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