Comma butterflies. “I am a dead leaf.
Butterflies use their wings as colorful billboards to communicate to other animals.
Aposematic colors may say, “I am toxic.”.
Cryptic colors may say, “I am not a butterfly, I am a dead leaf.”
A mimic may use color to say, “I am not a Viceroy, I am a Monarch”.
Colors are used by butterflies to identify potential mates. Coloration in butterfly species usually remains consistent over time and location, with some exceptions.
Source: Living With Insects Blog