Euphorbiaceae-feeder
Guides
Hamadryas feronia
Variable Cracker, Blue Cracker
Hamadryas feronia, commonly known as the variable cracker or blue cracker, is a neotropical butterfly in the family Nymphalidae. It is notable for producing loud clicking sounds during flight, a trait that gives the 'cracker' butterflies their common name. The species exhibits bark-mimicking camouflage and complex acoustic communication between males. Two subspecies are recognized: H. feronia feronia in South America and H. feronia farinulenta in Central America and Mexico.
Hamadryas guatemalena
Guatemalan cracker, Guatemalan calico
Hamadryas guatemalena, commonly known as the Guatemalan cracker or Guatemalan calico, is a medium-to-large butterfly in the family Nymphalidae. It ranges from southern North America through Central America to central South America. Adults exhibit year-round flight in tropical regions and peak activity in August in temperate areas. The species is notable for its cracker-like wing patterns and carrion-feeding behavior.