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

Rena humilis cahuilae - Desert Threadsnake

Rena humilis cahuilae - Desert Threadsnake - snake species | gveli | გველი

Rena humilis cahuilae - Desert Threadsnake

Nonvenomous

Considered harmless to humans.

Size

Adults 7 - 16 inches long (18-41 cm). Hatchlings are around 4 - 5 inches long.

Appearance

A very thin snake with a blunt head and tail. The tail is tipped with a small spine. Eyes are nonfunctional dark spots visible under translucent plates. The scales are shiny and cycloid. Belly plates are not enlarged. The lower jaw is countersunk. Coloring is brown, purple, or pink.

Behavior

When hunting for food, burrows under roots, rocks, and into ants nests. Often found under rocks, boards, or other surface debris where the soil is slightly moist. Sometimes found crawling on roads at night.

When threatened, this snake often writhes around, forming a tight coil while releasing pungent fluids from the cloaca. These fluids serve to repel defensive attacks by the ants and termites on which it feeds.

Diet

Eats ants and termites and their larvae and pupae, and occasionally other small insects.

Reproduction

Mates in the spring, lays eggs July - August. Females tend to the eggs, and may use communal nests.

Range

This subspecies, Rena humilis cahuilae - Desert Threadsnake, is found in southeastern California east of the peninsular ranges into southwest Arizona, south into Sonora and Baja California.

The species Rena humilis - Western Threadsnake, is found from Southern California east through southern Arizona and New Mexico, into southwestern Texas, and south into Mexico and Baja California, Mexico.

Habitat

Inhabits areas where the soil is suitable for burrowing: brushy mountain slopes, deserts, rocky hillsides, washes near streams.

Taxonomic Notes

Some herpetologists do not recognize subspecies of Rena humilis. Those who do recognize four subspecies in the United States, and five in Mexico.

In 2009, Adalsteinsson, Branch, Trape, Vitt & Hedges (Molecular Phylogeny, Classification, and Biogeograpy of Snakes of the Family Leptotyphlopidae (Reptilia, Squamata). Zootaxa. 2240: pp. 1 - 50) placed this species in the genus Rena, making it Rena cahuilae.

Conservation Issues

(Conservation Status) None.

RING-NECKED SNAKE <br /> Diadophis punctatus | Snake Species Virginia striatula - Rough Earth Snake | Snake Species Coluber lateralis euryxanthus - Alameda Striped Racer | Snake Species
Nerodia fasciata pictiventris - Florida Watersnake | Snake Species Python molurus molurus - Indian Rock Python | Snake Species Thamnophis proximus rubrilineatus - Red-striped Ribbon Snake | Snake Species
Lampropeltis zonata parvirubra - San Bernardino Mountain Kingsnake | Snake Species Thamnophis elegans terrestris - Coast Gartersnake | Snake Species Salvadora hexalepis hexalepis - Desert Patch-nosed Snake | Snake Species
Arizona elegans elegans - Kansas Glossy Snake | Snake Species Salvadora hexalepis mojavensis - Mohave Patch-nosed Snake | Snake Species Crotalus pricei pricei - Western Twin-spotted Rattlesnake | Snake Species
THORNSCRUB HOOK-NOSED SNAKE  <br />   Gyalopion quadrangulare | Snake Species Croatalus molossus - Black-tailed Rattlesnake | Snake Species Arizona elegans philipi  - Painted Desert Glossy Snake | Snake Species
Pantherophis alleghaniensis - Eastern Ratsnake | Snake Species Crotalus oreganus oreganus - Northern Pacific Rattlesnake | Snake Species Salvadora grahamiae grahamiae - Mountain Patch-nosed Snake | Snake Species
CHECKERED GARTERSNAKE <br /> Thamnophis marcianus | Snake Species WESTERN DIAMOND-BACKED  RATTLESNAKE   <br />    Crotalus atrox | Snake Species VARIABLE SANDSNAKE  Chilomeniscus stramineus | Snake Species

Copyright © 2012