Purple Emperor

Butterflies and Music, The male purple emperor possesses the iridescence that gives it its name: the metallic purple shimmer is a structural colour created by light refraction through special scales. Its scientific name (apatura iris) also reflects this: Iris is the goddess of the rainbow. The butterfly is often seen feeding on faeces, carrion, or even human sweat, as it primarily obtains nutrients from minerals

Metadata from the source database.