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Crotalus willardi willardi

(Arizona Ridgenose Rattlesnake)

Common Names

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Common Names in English:

Arizona Ridgenose Rattlesnake, Ridge-Nosed Rattlesnake, Ridgenose Rattlesnake, Willardi

Biology

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Diet

[Migration]

Taxonomy

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Domain: Eukaryota () - Whittaker & Margulis,1978 - eukaryotes
- Kingdom: Animalia () - Linnaeus, 1758 - animals
  - Subkingdom: Bilateria () - (Hatschek, 1888) Cavalier-Smith, 1983
    - Branch: Deuterostomia () - Grobben, 1908
      - Infrakingdom: Chordonia () - (Haeckel, 1874) Cavalier-Smith, 1998
        Phylum: Chordata () - Bateson, 1885 - Chordates
        Subphylum: Vertebrata () - Cuvier, 1812 - Vertebrates
        Infraphylum: Gnathostomata () - Auct. - Jawed Vertebrates
        Superclass: Tetrapoda () - Goodrich, 1930
        Class: Reptilia () - Reptiles
        Subclass: Diapsida ()
        Infraclass: Lepidosauromorpha ()
        Superorder: Lepidosauria () - �
        Order: Squamata ()
        Suborder: Serpentes () - (C. Linnaeus, 1758)
        Superfamily: Colubroidea ()
        Family: Viperidae ()
        Subfamily: Crotalinae ()
        Genus: Crotalus () - Linnaeus, 1758
        Specific name: willardi
        Subspecies: willardi
        Scientific name: - Crotalus willardi willardi

Notes

Name Status: Accepted Name . Latest taxonomic scrutiny: October 21, 1999.

Similar Species

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Members of the genus Crotalus

ZipcodeZoo has pages for 186 species and subspecies in this genus. Here are just 100 of them:

C. abyssus · C. adamanteus (Eastern Diamond-Backed Rattlesnake) · C. adamanteus pleistofloridensis · C. adamanteus ruber · C. adamantus · C. addmanteus · C. admanteus · C. angelensis · C. aquilus · C. atricaudatus · C. atrose · C. atrox (Western Diamond-Backed Rattlesnake) · C. atrox=cinereus · C. atrox atrox (Western Diamond-Backed Rattlesnake) · C. atrox elegans · C. basciliscus · C. basiliscus (Mexican West Coast Rattlesnake) · C. basiliscus basiliscus · C. basiliscus oaxacus · C. biseriatus · C. caliginis · C. cascavella · C. catalinensis (Santa Catalina Island Rattlesnake) · C. cerastes (Geh�rnte Klapperschlange) · C. cerastes cerastes (Mojave Desert Sidewinder) · C. cerastes cercobombus (Sonoran Sidewinder) · C. cerastes laterorepens (Colorado Desert Sidewinder) · C. cerberus · C. cinereous · C. concolor · C. confluentus · C. confluentus abyssus · C. confluentus kellyi · C. confluentus lutosus · C. confluentus nuntius · C. confluentus stephensi · C. culminatus · C. cumanensis · C. duriscus · C. durissus (Aruba Island Rattlesnake) · C. durissus cascavella (Aruba Island Rattlesnake) · C. durissus collilineatus (Aruba Island Rattlesnake) · C. durissus culminatus (Aruba Island Rattlesnake) · C. durissus cumanensis (Aruba Island Rattlesnake) · C. durissus dryinas · C. durissus dryinus · C. durissus durissus (Aruba Island Rattlesnake) · C. durissus marajoensis (Aruba Island Rattlesnake) · C. durissus ruruima (Aruba Island Rattlesnake) · C. durissus terrificus (South American Rattlesnake) · C. durissus totonacus (Aruba Island Rattlesnake) · C. durissus trigonicus (Aruba Island Rattlesnake) · C. durissus tzabcan (Aruba Island Rattlesnake) · C. enyo (Lower California Rattlesnake) · C. enyo cerralvensis · C. enyo enyo (Lower California Rattlesnake) · C. enyo furvus · C. ericsmithi (Guerreran Long-Tailed Rattlesnake) · C. estebanensis · C. exsul · C. gloydi lautus · C. goldmani · C. guttata · C. helleri · C. horridus (Timber Rattlesnake (Atricaudatus)) · C. horridus atricaudatus · C. horridus horridus (Timber Rattlesnake (Atricaudatus)) · C. hortulanus · C. intermedius (Mexican Smallhead Rattlesnake) · C. intermedius gloydi · C. intermedius intermedius (Mexican Smallhead Rattlesnake) · C. intermedius omiltemanus · C. lannomi (Autl�n Long-Tailed Rattlesnake) · C. lecontei · C. lepidus (Rock Rattlesnake) · C. lepidus klauberi (Banded Rock Rattlesnake) · C. lepidus lepidus (Mottled Rock Rattlesnake) · C. lepidus maculosus (Rock Rattlesnake) · C. lepidus morulus (Rock Rattlesnake) · C. lepidus semicornutus · C. lorenzoensis · C. lucasensis · C. lucifer · C. mitchelli · C. mitchellii (Southwestern Speckled Rattlesnake) · C. mitchellii angelensis (Speckled Rattlesnake) · C. mitchellii mitchellii (Speckled Rattlesnake) · C. mitchellii muertensis (Speckled Rattlesnake) · C. mitchellii pyrrhus (Southwestern Speckled Rattlesnake) · C. mitchellii stephensi (Panamint Rattlesnake) · C. mitchelli angelensis · C. mitchelli mitchelli · C. mitchelli muertensis · C. mitchelli pyrrhus (Southwestern Speckled Rattlesnake) · C. molassus · C. molossus (Black-Tailed Rattlesnake) · C. molossus estebanensis (Black-Tailed Rattlesnake) · C. molossus molossus (Black-Tailed Rattlesnake) · C. molossus nigrescens (Black-Tailed Rattlesnake) · C. molossus nigriscens

More Info

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Further Reading

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Banks, R. C., R. W. McDiarmid, A. L. Gardner, and W. C. Starnes 2003. Checklist of Vertebrates of the United States, the U.S. Territories, and Canada.
Banks, R. C., R. W. McDiarmid, and A. L. Gardner 1987. Checklist of Vertebrates of the United States, the U.S. Territories, and Canada. Resource Publication, no. 166. United States Department of the Interior Fish and Wildlife Service. Washington, D.C., USA. 79.
Flores-Villela, Oscar / McCoy, C. J., ed. 1993. Herpetofauna Mexicana: Lista anotada de las especies de anfibios y reptiles de México, cambios taxonómicos recientes, y nuevas especies. Carnegie Museum of Natural History Special Publication, no. 17. Carnegie Museum of Natural History. Pittsburgh, Pennsylvania, USA. iv + 73. ISBN: 0-911239-42-1.
McDiarmid, Roy W., Jonathan A. Campbell, and T'Shaka A. Touré 1999. Snake Species of the World: A Taxonomic and Geographic Reference, vol. 1. The Herpetologists' League. Washington, D.C., USA. xi + 511. ISBN: 1-893777-01-4.
Our living resources: a report to the nation on the distribution, abundance, and health of U.S. plants, animals, and ecosystems / [edited by], Edward T. LaRoe [et al.]. Washington, DC: U.S. Dept. of the Interior, National Biological Service, 1995. ENG url p. 518.
Stebbins, Robert C. 1985. A Field Guide to Western Reptiles and Amphibians, Second Edition. Houghton Mifflin Company. Boston, Mass. 336.
The natural history of Mexican rattlesnakes / by Barry L. Armstrong and James B. Murphy. Lawrence: University of Kansas, 1979. ENG url p. 63, p. 83.
Threatened wildlife of the United States. Washington, Bureau of Sport Fisheries and Wildlife [for sale by the Supt. of Docs., U.S. Govt. Print. Off.]1973. ENG url p. 98.

Notes

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Contributors

Brands, S.J. (comp.) 1989-2006. Systema Naturae 2000. The Taxonomicon. Universal Taxonomic Services, Amsterdam, The Netherlands. Accessed April 18, 2007.

Identifiers

Biodiversity Heritage Library NamebankID: 2538307
Catalogue of Life Accepted Name Code: Rep-8080
Global Biodiversity Information Facility Taxonkey: 13515880
Integrated Taxonomic Information System (ITIS) Taxonomic Serial Number (TSN): 202177
Natural Heritage Network Species Identifier: ARADE02132
Zipcode Zoo Species Identifier: 177935

Last Revised: 2009-07-15