About Battus crassus (Cramer, 1777)
This is a butterfly species with very long wings. The forewing has white patches inside and below the cell. The hindwing has a large white costal area, which reaches all the way to the base in males. In the subspecies Battus crassus lepidus, the white patches on the upper surface of the forewing are completely absent. The ground color of the larva is black-brown, and it is likely variable; the larva has no spots. The thoracic hump of the pupa is very long and is divided at its tip. The larvae of this species feed on multiple species in the genus Aristolochia: Aristolochia cymbifera, Aristolochia esperanzae, Aristolochia gigantea, Aristolochia macroura, Aristolochia veraguensis, Aristolochia odora, Aristolochia didyma, and Aristolochia brasiliensis.
