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Posted by jediknight on March 03, 2003 at 12:07:08:
In Reply to: dusty, plains,mexican, are they all westerns??? posted by jimfmcdonald on March 02, 2003 at 18:21:29:
The Western Hognose Snake (Heterodon nasicus) is split into 3 sub-species:
1. Plains Hognose (H.n.nasicus)
2. Dusty Hognose (H.n.gloydi)
3. Mexican Hognose (H.n.kennerlyi)
They are ALL WESTERN HOGNOSE snakes!
There are a couple of students who are working on the scientific reclassification of this species.
The only difference in the Plains and the Dusty Hognose (remember, both are Westerns!) is blotch counts... Plains has more blotches. The Mexican is a different story. There are many photos posted here on the forum that are labeled as Mexicans that are not truly PURE Mexicans. The Mexican Hognose has different scale counts than the other two subspecies. The Mexican Hognose has less than 6 azygous scales behind their snout while the other two subspecies have more than 9 and up to 20+. It is a case where the pet trade has termed anything that looks remotely similar to a Mexican Hog MUST be a Mexican Hog. There is actually a big push in the scientific community to combine the Plains and the Dusty into one species with no subspecies (H.nasicus) and elevate the Mexican to a species level (H.kennerlyi), but as of now, that has not been accepted in literature.