Description
English: Agkistrodon piscivorus leucostoma. Animal courtesy of Austin Reptile Service. http://www.austinreptileservice.net/
Date 31 January 2006 (original upload date)
Author The original uploader was Dawson at English Wikipedia https://en.wikipedia.org/wiki/User:Dawson
Source: https://commons.wikimedia.org/wiki/File:Agkistrodon_piscivorus_leucostoma.jpg

Agkistrodon piscivorus leucostoma is a venomous pit viper subspecies found in the south central United States. It is the smallest of the three subspecies and tends to be darker in color. Common names: western cottonmouth, water moccasin, cottonmouth. Order: Squamata, Suborder: Serpentes, Family: Viperidae, Genus: Agkistrodon, Subspecies: Agkistrodon piscivorus leucostoma (Troost, 1836).
Synonyms:
Acontias leucostoma - Troost, 1836
[Toxicophis leucostoma] - Troost, 1836
Toxicophis leucostomus - Holbrook, 1842
Agkistrodon piscivorus leucostoma - Gloyd & Conant, 1943
Agkistrodon piscivorus leucostomus - H.M. Smith & Taylor, 1945