I enjoy reading the stories behind various morphs. Most of them start with "it was imported in 200x," but not all ... I was just reading the story of Corey Woods' "Mutation X" and it sounds as though (if I'm reading it right) this is one morph that truly arose spontaneously in captivity -- not present in the parent snakes' genotypes.
http://www.reptileradio.net/reptiler...750#post718750
From what I can recall, the puzzle ball morph arose in captivity as well ... Are those the only two, or am I missing any? (Or am I the only one who gets a kick out of this, ha ha ...)