What is a "festoon"?

A festoon refers to a distinctive wing pattern characterized by a series of elongated, rounded shapes or loops. These loops or festoons often appear in alternating light and dark colors, creating a visually striking and intricate design. Festoons can be found on the wings of various butterfly species, adding a unique element to their overall appearance. This wing pattern serves multiple purposes, including camouflage, predator deterrence, and species recognition.