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DESCRIPTION OF THE HEMIPENIS OF SISTRURUS RAVUS (SERPENTES: VIPERIDAE)

James R. McCranie

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Abstract

The hemipenis of Sistrurus ravus is described and illustrated. Illustrations of the hemipenes of S. catenatus and S. miliarius are also provided. The hemipenis of S. ravus does not exhibit the diagnostic characteristics that have been used to distinguish Sistrurus from the genus Crotalus. Instead, the hemipenis of S. ravus shows a resemblance to those of Crotalus pusillus and several other closely related species of montane Crotalus and suggests that the generic taxonomy of the rattlesnakes is unsettled.

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What this paper is about

The hemipenis of Sistrurus ravus is described and illustrated. Illustrations of the hemipenes of S. catenatus and S. miliarius are also provided. The hemipenis of S. ravus does not exhibit the diagnostic characteristics that have been used to distinguish Sistrurus from the genus Crotalus. Instead, the hemipenis of S. ravus shows a resemblance to those of Crotalus pusillus and several other closely related species of montane Crotalus and suggests that the generic taxonomy of the rattlesnakes is unsettled.

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Available abstract

The hemipenis of Sistrurus ravus is described and illustrated. Illustrations of the hemipenes of S. catenatus and S. miliarius are also provided. The hemipenis of S. ravus does not exhibit the diagnostic characteristics that have been used to distinguish Sistrurus from the genus Crotalus. Instead, the hemipenis of S. ravus shows a resemblance to those of Crotalus pusillus and several other closely related species of montane Crotalus and suggests that the generic taxonomy of the rattlesnakes is unsettled.

Key concepts: Viperidae, Crotalus, Ophidia, Biology, Anatomy, Taxonomy (biology), Zoology, Ecology

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