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.

Coluber taeniatus taeniatus - Desert Striped Whipsnake | Snake Species GREEN RATSNAKE  Senticolis triaspis | Snake Species Coluber constrictor flaviventris - Eastern Yellow-bellied Racer | Snake Species
Thamnophis hammondii - Two-striped Gartersnake | Snake Species PLAINS BLACK-HEADED SNAKE  <br />Tantilla nigriceps | Snake Species Nerodia fasciata - Southern Watersnake | Snake Species
SADDLED LEAF-NOSED SNAKE <br />  Phyllorhynchus browni | Snake Species WESTERN RATTLESNAKE <br />  Crotalus oreganus | Snake Species Coluber constrictor mormon - Western Yellow-bellied Racer | Snake Species
Thamnophis proximus rubrilineatus - Red-striped Ribbon Snake | Snake Species Crotalus oreganus oreganus - Northern Pacific Rattlesnake | Snake Species Thamnophis sirtalis fitchi - Valley Gartersnake | Snake Species
Bogertophis rosaliae - Baja California Ratsnake | Snake Species Crotalus oreganus concolor  - Midget Faded Rattlesnake | Snake Species Charina umbratica - Southern Rubber Boa | Snake Species
Lampropeltis triangulum celaenops - New Mexico Milksnake | Snake Species Bogertophis rosaliae - Baja California Ratsnake | Snake Species Rhinocheilus lecontei  - Long-nosed Snake | Snake Species
Crotalus oreganus helleri - Southern Pacific Rattlesnake | Snake Species Crotalus oreganus abyssus  - Grand Canyon Rattlesnake | Snake Species Coluber constrictor priapus - Southern Black Racer | Snake Species

Copyright © 2012