Sara Longwing

The Sara longwing (Heliconius sara) is a species of neotropical heliconiid butterfly found from Mexico to the Amazon Basin and southern Brazil. It is a colourful species: the dorsal wing surface is black with a large medial patch of metallic blue that is framed by two bands of white on the forewings. (This coloration is similar to that of Wallace's longwing, H. wallacei, whose range overlaps Sara's, but does not extend as far north.) The ventral wing surface is a dull brown to black with muted bands and small red spots on the proximal margin; total wingspan is 55–60 mm.

Inhabiting rainforests, adults are commonly found among sparser secondary growth and along forest margins. They feed on the nectar of Hamelia, Lantana, Palicourea, and Psiguria plants. They reproduce continuously, with several generations produced every year. Sara longwings are one of several heliconiids exhibiting the unusual practice of pupal mating, in which adult males are attracted to female pupae via the latter's pheromones.

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