Short answer: no.
Long answer: no. The image on the cover of my book is metaphoric. Iconic. You know, this beautiful thing that's been taken and frozen in ice. Unable to progress, yet unable to die too. It's lovely, haunting.
And that's it.
So quick question: Is this okay with you? Would you feel cheated if you opened the book and didn't even see the word butterfly? (I just did a search of my word doc. "Butterfly" is not present, not even once.) Or are metaphoric covers acceptable--even desirable?