|Once fully grown, both moth and butterfly caterpillars molt a final time to form a pupa. Most moths surround
their pupae with a constructed silken case called a cocoon. By contrast, a butterfly pupa, frequently termed a chrysalis, is generally naked. In most cases, butterfly chrysalids are attached to a leaf, twig or other surface with silk. In some instances, they may be unattached or surrounded by a loose silken cocoon.