They were all herbivores. They evolved in Triassic period and the group died out with the mass extinction at the end of the Cretaceous period. The name derives from the distinctive arrangement of the pelvis. Butterfly A type of insect. Butterflies, along with moths and skippers are insects classified as Lepidoptera.
Today there are several thousand species distributed world-wide.
They evolved in the Cretaceous period alongside the flowering plants which they fed on, and pollinated in return. They were the most recent major group of insects to have evolved.