Pacific Ringneck Snake Diadophis punctatus amabilis Baird & Girard, 1853
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Taxonomic Comments:
Collins, Joseph T. (1991 Viewpoint: A new taxonomic arrangement for some North American amphibians and reptiles. Herpetological Review. 22(2): pp. 42-43), using the Evolutionary Species Concept, considered this previously defined and diagnosed allopatric taxon a distinct species, a more conservative arrangement than recognizing it as a race of Diadophis punctatus with which it does not intergrade nor exchange genes.