That is exactly what I said. Re-read what you just quoted
"Technically there are only 3 different species of Pituophis and they don't line up with bull, pine or gopher.
Who ever told you that west coast east coast thing was wrong. They are different sub-species not localities. "
Take a look at this for the 3 different species aspect. You might not be able to read the entire article but at least you can read the abstract
http://www.sciencedirect.com/science...5579039990698X
Having bred both, bulls and gophers they are not that similar. Their head scales are different, sizes are different and their color genes are different. For example, bulls have the axanthic trait while gophers have anery. Great basins have the motley trait which isn't found in bulls.
Also, P. catenifer is just a generic name used for the group of bulls and gophers. There is no animal that is "Pituophis catenifer" because that is a multi-species complex. There are only sub-species under this species designation. There are multiple sub-species of gopher snake, not just one. Look here for that:
http://www.itis.gov/servlet/SingleRp...h_value=209400
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