Hello,
You found a wonderful Luna moth (Actias luna). So this is not mouths but moons on the wings 
The male doesn't feed and stays alive for around a week only (time to find a female!).
You can compare it with the one I photographed last year on my website (click on "Papillon lune"
.
http://parcours.pilonm.org/insectes/saturniidae.htm
Cheers,
Michel
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Michel Pilon
Naturalist-photographer
Quebec, Canada
Mes Parcours Nature
parcours.pilonm.org


