Original: Butterflies are a natural monophyletic group , often given the sub-order Rhopalocera , which includes Papilionoidea ( true butterfiles ) , Hesperiidae ( skippers ) , and Hedylidae ( butterfly moths ) .
Simplified: Butterflies are a natural monophyletic group . Rhopalocera , which includes Papilionoidea ( true butterflies ) , Hesperiidae ( skippers ) , and Hedylidae ( butterfly moths ) .