based on a single specimen from near Palma Sola, Veracruz, Mexico.Agkistrodon howardgloydi, Agkistrodon russeolus and Agkistrodon taylori were formerly considered subspecies. References External links Agkistrodon bilineatus at VN Illustrated Database of Mexican Biodiversity. Accessed 26 November 2006. bilineatus Reptiles of Mexico Reptiles of Guatemala Reptiles of Honduras Snakes of Central America Taxa named by Albert Günther Reptiles described in 1863