Here is a quick scout around for some comic/cartoon inspiration for wings in reference to the ongoing concept work for Moths vs Butterflies.
First up Pixie from the X-Men, who has fairy0like wings actually, but still interesting to see different artists tackle her:
[Pixie compilations from various comics via the mighty internet]
Next some compilations of some fairy illustrations/pieces. Butterfly fairies seem quite common, and I like some of the wing concepts shown here.
[Butterfly-like fairy pic compilations from all over the place]
Lastly another fairy compilation and one with Marvel's Wasp and Archangel:
[BUtterfly/Fairy characters plus Wasp and Archangel from all over the net]