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・ Crotty, Tasmania
・ Crotyl
・ Crotyl alcohol
・ Crotyl chloride
・ Crotalus lugubris
・ Crotalus mitchellii
・ Crotalus mitchellii angelensis
・ Crotalus mitchellii muertensis
・ Crotalus mitchellii pyrrhus
・ Crotalus mitchellii stephensi
・ Crotalus molossus
・ Crotalus molossus estebanensis
・ Crotalus oreganus
・ Crotalus oreganus abyssus
・ Crotalus oreganus caliginis
Crotalus oreganus cerberus
・ Crotalus oreganus concolor
・ Crotalus oreganus helleri
・ Crotalus oreganus lutosus
・ Crotalus polystictus
・ Crotalus pricei
・ Crotalus pusillus
・ Crotalus ruber
・ Crotalus ruber lorenzoensis
・ Crotalus ruber lucasensis
・ Crotalus scutulatus
・ Crotalus simus
・ Crotalus stejnegeri
・ Crotalus tigris
・ Crotalus tortugensis


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Crotalus oreganus cerberus : ウィキペディア英語版
Crotalus oreganus cerberus

:''Common names: Arizona black rattlesnake, black rattlesnake,〔Wright AH, Wright AA. 1957. Handbook of Snakes. 2 volumes. Comstock Publishing Associates. (7th printing, 1985). 1105 pp. ISBN 0-8014-0463-0.〕 more.''
''Crotalus oreganus cerberus'' is a venomous pitviper subspecies found in the southwestern United States.
==Description==
According to Wright and Wright (1957), adults grow to an average length of . Klauber (1997) reports the maximum length to be less at , with the smallest gravid female measuring .〔Klauber LM. 1997. Rattlesnakes: Their Habitats, Life Histories, and Influence on Mankind. Second Edition. 2 volumes. Reprint, University of California Press, Berkeley. ISBN 0-520-21056-5.〕 Hubbs and O'Connor (2012) list an adult size range of .〔Hubbs, Brian and Brendan O'Connor. 2012. '' A Guide to the Rattlesnakes and other Venomous Serpents of the United States''. Tricolor Books. Tempe, Arizona, 129 pp. ISBN 978-0-9754641-3-7. (''Crotalus cerberus'', pp. 34-35.)〕
The color pattern consists of a dark grayish, brownish black, reddish brown, or blackish ground color, overlaid with a dorsal pattern of blotches that are rectangular anteriorly, becoming subhexagonal posteriorly, eventually becoming crossbands just before the tail. However, specimens also may be a uniform dark color without any clear dorsal pattern, or the dorsal blotches may be even darker and bordered with white, cream, or yellow transverse rows of scales, or the color pattern may be quite pale with a significant amount of yellow mixed in. A postocular stripe is evident in lightly colored specimens, but not so much in darker ones.〔Campbell JA, Lamar WW. 2004. The Venomous Reptiles of the Western Hemisphere. 2 volumes. Comstock Publishing Associates, Ithaca and London. 870 pp. 1500 plates. ISBN 0-8014-4141-2.〕

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