Common names: Trans-Pecos copperhead, western copperhead
Agkistrodon contortrix pictigaster was formerly a venomous pit viper subspecies[2] found in the Trans-Pecos region of the United States in western Texas, and northeastern Mexico. However, recent taxonomic changes do not recognize the Trans-Pecos copperhead (A. c. pictigaster) as a valid taxon.
^McDiarmid RW, Campbell JA, Touré T. 1999. Snake Species of the World: A Taxonomic and Geographic Reference, Volume 1. Herpetologists' League. 511 pp. ISBN 1-893777-00-6 (series). ISBN 1-893777-01-4 (volume).
^"Agkistrodon contortrix pictigaster". Integrated Taxonomic Information System. Retrieved 15 May 2007.
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Common names: Trans-Pecos copperhead, western copperhead Agkistrodoncontortrixpictigaster was formerly a venomous pit viper subspecies found in the Trans-Pecos...
The eastern copperhead (Agkistrodoncontortrix), also known simply as the copperhead, is a species of venomous snake, a pit viper, endemic to eastern North...
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