C.pyrrhogaster tail shape variation

[TJ]

I ran across a thought-provoking report here suggesting that the tail shape of C.pyrrhogaster found at higher elevations (in the mountains) is different from that of pyrrhogaster found at lower elevations (in both hilly and lowland areas):

(above: male, high elevation; below: male, low elevation)

Source:
The Amphibians and Reptiles of Tochigi
Tochigi Prefectural Government
2001

(though I would have thought there'd be a more humane way to demonstrate this...

)