Hi Brain
I saw, you have asked this question already once!
I already breed G.hainanensis three years, and have done my experiences!
I received both forms from China, it is all WCs and I cannot tell you the place of discovery.
But I could see, both forms produce different descendants.
There was a difference in the ribbons and in the reason-color of the animals.
With a form, the rings fade at the tail and on the body very much early.
And the other form, she has their shining ribbons long.
The one form always has the black points, and with the other develops big dark stains.
One looks this at the pictures of the descendants well.
If they come from the egg, the highland-form is black, equipped with wise until easily sallow ribbons. These ribbons are narrow however.
With the other form, the descendants already have a strong yellow until orange and they have very wide ribbons.
And the reason-color of the body is brown, easily reddish also after some days later.
I hope you can understand everything well, my English is not very good.
Here, some pictures are still, where one can also see it clearly.
Lowland
Highland
And to the comparison once again the descendants.
These descendants are from the last year (2006).
I always have Interese at other experiences and pictures.
Best greetings Markus