Posted by:
curteck
at Thu Apr 1 10:05:34 2004 [ Email Message ] [ Show All Posts by curteck ]
The subspecies H. n. gloydi no longer exists. After extensive analysis of the morphological characters that have defined them in the past, it was determined that most of the characters involved (number of blotches in particular) were part of a cline of variation. The two publications below deal with this subject.
„h Eckerman, C. M. 1996. Variation, systematics, and interspecific position of Heterodon nasicus (Serpentes: Xenodontidae). Unpublished M.S. thesis, The University of Texas at El Paso, El Paso, Texas, 198 pp.
„h Walley, H. D. and C. M. Eckerman. 1999. Heterodon nasicus. Catalogue of American amphibians and reptiles, 698:1-10.
Curtis Eckerman
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