black-tailed rattlesnake (Phoenix Zoo - Arizona Trail)

black-tailed rattlesnake

Crotalus molossus

Summary ⁵

Crotalus molossus is a venomous pit viper species found in the southwestern United States and Mexico. Four subspecies are currently recognized, including the nominate subspecies described here.

Range description ⁶

The species' range extends from western, central, and southern Arizona, central and southern New Mexico, and southwestern and central Texas in the United States, south through Mexico to the southern edge of the Mexican Plateau and Mesa del Sur (Oaxaca), including Isla Tiburon in the Gulf of California, at elevations from near sea level up to around 2,930 m asl (9,600 feet) (Grismer 2002, Stebbins 2003, Campbell and Lamar 2004).

Iucn red list assessment ⁷

Red List Category

Least Concern

Red List Criteria

Version

3.1

Year Assessed

2007

Assessor/s

Hammerson, G.A., Vazquez DÃaz, J. & Quintero DÃaz, G.E.

Reviewer/s

Cox, N., Chanson, J.S. & Stuart, S.N. (Global Reptile Assessment Coordinating Team)

Contributor/s

Justification

Listed as Least Concern in view of its wide distribution, presumed large population, and because it is unlikely to be declining fast enough to qualify for listing in a more threatened category.

Fuentes y créditos

(c) Landahlauts, algunos derechos reservados (CC BY-NC-SA), http://www.flickr.com/photos/15853267@N00/4075979521
(c) Micheal Jewel, algunos derechos reservados (CC BY-NC), http://farm4.static.flickr.com/3152/2837849611_46c73b7841_o.jpg
Christina Wozniak at the Houston Zoo, sin restricciones conocidas de derechos (dominio publico), https://phil.cdc.gov/PHIL_Images/8134/8134_lores.jpg
(c) John Sullivan, algunos derechos reservados (CC BY-NC), subido por John Sullivan
(c) Wikipedia, algunos derechos reservados (CC BY-SA), http://en.wikipedia.org/wiki/Crotalus_molossus
(c) International Union for Conservation of Nature and Natural Resources, algunos derechos reservados (CC BY-NC-SA), http://eol.org/data_objects/28077677
(c) International Union for Conservation of Nature and Natural Resources, algunos derechos reservados (CC BY-NC-SA), http://eol.org/data_objects/28077676