Snake Species Dinosaur species

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

CHIHUAHUAN NIGHTSNAKE Hypsiglena jani

CHIHUAHUAN NIGHTSNAKE  Hypsiglena jani - snake species | gveli | გველი

CHIHUAHUAN NIGHTSNAKE Hypsiglena jani

DESCRIPTION:
A small (up to about 600 mm or 23" in total length) gray, or orange-tan snake with a row of small, dark, gray-brown blotches on the back (dorsal blotches). The dorsal blotches are usually in a single row but are sometimes offset at the midline of the back creating two rows of small, alternating blotches.

A dark collar consisting of three united gray-brown blotches marks the neck. The central collar-blotch is a dark, narrow stripe that extends forward to the parietal scales (posterior-most large head plates). The two lateral components of the collar are larger than the central blotch and their edges fuse with those of the central blotch. A dark gray-brown bar extends back from each eye to the collar. The underside is plain pale gray. The head is relatively flat. The pupils are vertically elliptical and the scales are smooth.

DISTRIBUTION:
This snake is distributed across the southern portion of the Colorado Plateau in northeastern Arizona and in sub-Mogollon Rim southeastern Arizona. It is found at elevations ranging from about 3,000' to about 8,500'.

HABITAT:
The Chihuahuan Nightsnake inhabits a wide variety of biotic communities ranging from Sonoran Desertscrub and Chihuahuan Desertscrub, through grasslands, and woodlands, and into cool Petran Montane Conifer Forest. It is found in an equally wide variety of terrain types ranging from the flat, open deserts to steep, rocky, wooded slopes. It seems to be most abundant in moderate terrain within desertscrub and grassland communities.

BEHAVIOR:
This strictly nocturnal snake hibernates during the cold months of late fall and winter. When persistently harassed it often coils into a tight, spiraled shield or cone with the head tucked tightly against the center of the spiral. It is often encountered on remote roadways at night. It is mildly venomous but rarely bites when captured and its venom is not considered to be dangerous to humans.

DIET:
The Chihuahuan Nightsnake uses mild venom injected by enlarged teeth in the rear upper jaw to subdue lizards and small snakes. It also eats reptile eggs, frogs, and a variety of insects.

REPRODUCTION:
Mating probably takes place in spring and a clutch of up to 9 eggs is laid in spring or summer.

Crotalus oreganus abyssus  - Grand Canyon Rattlesnake | Snake Species Crotalus ruber - Red Diamond Rattlesnake | Snake Species Thamnophis sirtalis tetrataenia - San Francisco Gartersnake | Snake Species
Diadophis punctatus regalis - Regal Ring-necked Snake | Snake Species Lampropeltis getula splendida - Desert Kingsnake | Snake Species WESTERN PATCH-NOSED SNAKE <br /> Salvadora hexalepis | Snake Species
 PRAIRIE RATTLESNAKE <br />  Crotalus viridis | Snake Species Thamnophis sirtalis tetrataenia - San Francisco Gartersnake | Snake Species Agkistrodon contortrix laticinctus - Broad-banded Copperhead | Snake Species
Arizona elegans elegans - Kansas Glossy Snake | Snake Species  SIDEWINDER  Crotalus cerastes | Snake Species Lampropeltis triangulum  - Milksnake | Snake Species
Crotalus viridis nuntius  - Hopi Rattlesnake | Snake Species MEXICAN HOG-NOSED SNAKE <br />  Heterodon kennerlyi | Snake Species SONORAN WHIPSNAKE  Coluber bilineatus | Snake Species
Diadophis punctatus pulchellus - Coral-bellied Ring-necked Snake | Snake Species Arizona elegans candida - Mohave Glossy Snake | Snake Species Salvadora grahamiae grahamiae - Mountain Patch-nosed Snake | Snake Species
Crotalus stephensi - Panamint Rattlesnake | Snake Species Thamnophis atratus hydrophilus - Oregon Gartersnake | Snake Species Thamnophis sirtalis tetrataenia - San Francisco Gartersnake | Snake Species

Copyright © 2012