Equally confounding is the butterfly’s mix-and-match construction. “Usually, toxic species have very bright, conspicuous color patterns,” Elias says. Dart frogs, which secrete a toxin through their skin, are entirely covered in police-tape yellow or stop-sign red. Transparent animals, meanwhile, typically go all in on their disappearing act. The butterflies seen here are doing both, like an invisibility cloak whose trim didn’t quite get the memo.