The ventral wings (bottom or closed side) of many butterfly wings has a less colorful, mottled design that help butterflies blend in with their surroundings. Both the Red Admiral (Vanessa atalanta) above and the Eastern Comma (Polygonia comma) below have very brightly colored dorsal wings (upper or open side). The Red Admiral has red and white stripes, which you can partially see in the photograph above. The Eastern Comma has several shades of bright oranges and yellows. When their wings are closed, you have a much harder time seeing them.
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