it means they are unique
The two wings are called the hind wings and the fore wings
Swallowtail
1. All butterflies have four wings: a fore wing and a hind wing on each side of its body. 2. A butterfly has four wings. They have two hind wings and two fore wings. Most people think they just have one wing on each side, but anatomy of a butterfly divides them into four separate wings.
Butterflies are either male or female with most species the colors of the fore wings or hind wings are a bit different to differenciate the sex.
4 hind legs
They have their wings on their thorax, or their middle part.
Wings of a Butterfly was created in 2005-09.
"Bullet With Butterfly Wings" by Smashing Pumpkins
A dragonfly's wings is clear and a butterfly's is colorful.
it is not possible to tell until the caterpillar has formed into a butterfly
The hind wings of a grasshopper, which is it's second pair of wings, is used to help them fly. While the front wings are rigid, the hind wings are more membrane-like and are very colorful.
Butterfly wings are identical because of their genetics. The wings have to be identical so that they will be able to fly correctly.