I've heard that it's possible to identify insect species uniquely based only on the vein patterns of their wings. Is this true? If so, what is this?
The image is taken from an unsolved Internet puzzle game from a few years ago. (The creators of the puzzle are no longer to be found, so I can't ask them). I believe the wing is probably from some species of cicada, but I couldn't be sure, and if possible I'd like to know what particular species of cicada.
Also, is there any kind of formal classification/notation for insects' wing venation? Might shed some light on what the puzzle makers actually meant by the dratted thing! (You can remove this bit, or I can, if it's considered to be asking two questions at once.)