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Journal Article

A New Subspecies of the Red Rattlesnake, Crotalus ruber, from San Lorenzo Sur Island, Baja California Norte, Mexico

C. W. Radcliffe and T. Paul Maslin
Copeia
Vol. 1975, No. 3 (Aug. 5, 1975), pp. 490-493
DOI: 10.2307/1443647
Stable URL: http://www.jstor.org/stable/1443647
Page Count: 4
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
A New Subspecies of the Red Rattlesnake, Crotalus ruber, from San Lorenzo Sur Island, Baja California Norte, Mexico
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Abstract

A new subspecies, Crotalus ruber lorenzoensis, is described from San Lorenzo Sur Island in the Gulf of California. It is intermediate between Crotalus ruber ruber and Crotalus ruber lucasensis, but is distinguished from both by smaller size, fewer scale rows, fewer subcaudal scales and the structure of the proximal rattle segment which has less distinct lobes and grooves, thus permitting the loss of newly-formed rattle segments in many specimens.

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