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.

 CHIHUAHUAN BLACK-HEADED SNAKE <br />    Tantilla wilcoxi | Snake Species Arizona elegans occidentalis - California Glossy Snake | Snake Species Coluber taeniatus taeniatus - Desert Striped Whipsnake | Snake Species
Crotalus viridis nuntius  - Hopi Rattlesnake | Snake Species Coluber flagellum flagellum - Eastern Coachwhip | Snake Species Diadophis punctatus amabilis - Pacific Ring-necked Snake | Snake Species
Diadophis punctatus vandenburgii - Monterey Ring-necked Snake | Snake Species Lampropeltis triangulum celaenops - New Mexico Milksnake | Snake Species Charina bottae  - Northern Rubber Boa | Snake Species
Thamnophis cyrtopsis cyrtopsis  - Western Black-necked Gartersnake | Snake Species TIGER RATTLESNAKE  Crotalus tigris | Snake Species  SIDEWINDER  Crotalus cerastes | Snake Species
Lampropeltis getula holbrooki - Speckled Kingsnake | Snake Species Thamnophis proximus rubrilineatus - Red-striped Ribbon Snake | Snake Species Thamnophis sirtalis fitchi - Valley Gartersnake | Snake Species
Thamnophis sirtalis concinnus - Red-spotted Gartersnake | Snake Species Lampropeltis alterna - Gray-banded Kingsnake | Snake Species Pituophis catenifer catenifer - Pacific Gopher Snake | Snake Species
MILKSNAKE  Lampropeltis triangulum | Snake Species WESTERN PATCH-NOSED SNAKE <br /> Salvadora hexalepis | Snake Species Rena humilis humilis - Southwestern Threadsnake | Snake Species

Copyright © 2012