Not that different regarding to PZ's exhibits, we are not making population genetics or evolutionary biology...They are very very different. There's even talk of splitting the Negev tortoise (Testudo Werneri) and Kleinmann's tortoise, let alone merge them.
Fot example I voted Greek tortoise but I wouldn't see any big difference and would be just as happy with any other Mediterranean Testudo.
Also, in the OP Indian and King cobra are merged, and they are not even in the same genus (and I understand that).