Interesting article. I think (to take it perhaps too seriously) the butterfly used in designs of cushions, earrings, etc. is more a cultural icon than it is an attempt at accurate biological description — it's something analogous to ♡ vs. a realistic depiction of an actual heart.
For whatever reason, we've come to think of butterflies as looking the way they do in insect collections, and I don't think even knowledge of what the dead and alive specimens look like would make me want to draw it any other way. A 'dead' one just looks more butterflyish!
I also have a feeling that it has something to do with the (more cultural than biological) distinction between moths and butterflies. For some reason, the latter are considered examples of exquisite beauty and the former usually an ugly (even fear-inducing) nuisance. Drawing butterflies in the classic 'butterfly' shape is a way to make this difference clearer — even if it's entirely inaccurate.
For whatever reason, we've come to think of butterflies as looking the way they do in insect collections, and I don't think even knowledge of what the dead and alive specimens look like would make me want to draw it any other way. A 'dead' one just looks more butterflyish!
I also have a feeling that it has something to do with the (more cultural than biological) distinction between moths and butterflies. For some reason, the latter are considered examples of exquisite beauty and the former usually an ugly (even fear-inducing) nuisance. Drawing butterflies in the classic 'butterfly' shape is a way to make this difference clearer — even if it's entirely inaccurate.