The Cabeza de Vaca Basin Subspecies of the Lizard Sceloporus undulatus

The population of Sceloporus undulatus occupying the vast sand dune area of part of the ancient Cabeza de Vaca Basin of north-central Chihuahua, Mexico, belongs to the terrestrial consobrinus exerge, and is distinguished readily from its geographically closest described relative, S. u. consobrinus,...

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Bibliographic Details
Published in:Transactions of the Kansas Academy of Science 1995-05, Vol.98 (1/2), p.44-60
Main Authors: Smith, Hobart M., Chiszar, David, Lemos-Espinal, Julio A., Bell, Edwin L.
Format: Article
Language:English
Subjects:
Axilla
Canyons
Dunes
Highways
Holotypes
Lizards
Paratypes
Pigments
Sand dunes
Stripes
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Description
Summary:The population of Sceloporus undulatus occupying the vast sand dune area of part of the ancient Cabeza de Vaca Basin of north-central Chihuahua, Mexico, belongs to the terrestrial consobrinus exerge, and is distinguished readily from its geographically closest described relative, S. u. consobrinus, by its late-developing, discrete semeions, not black-bordered, in males; the usual absence of scattered, black pigmentation ventrally in both sexes; usually a brightly striped dorsal pattern; much reduced or no paravertebral dark spots, usually replaced by a line; a marked seasonal variation in intensity of dorsal pigmentation in both sexes; dorsals usually (88%) 35-39; gular semeions usually (79%) separated medially. It is named S. u. speari in honor of Norman E. Spear, Distinguished Professor of Psychology at the State University of New York at Binghamton.
ISSN:0022-8443
1938-5420
DOI:10.2307/3628078