It is a temperate butterfly mainly distributed in forests of Europe and Asia. Often soaring high on the top of the forest, male butterflies are sometimes attracted to decaying corpses on the ground because they need to absorb minerals from the corpses. Adult butterflies have dark brown wings with white lines and small orange rings on them. Male butterflies have a shiny blue purple luster, while females do not have this luster. The larvae are green in color, with white and yellow spots on them, and have two large antennae. They are larger in size than ordinary butterflies. The surface of its wings is covered with transparent scales, which reflect light to form interference patterns, causing the human eye and brain to perceive it as purple.