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Heliconius ismenius is a butterfly of the family Nymphalidae found in Central America and northern South America. Pierre André Latreille, a French zoologist, found and described the species in 1817. A toxic and unpalatable species, it shares its striking (aposematic) colour pattern with other similarly toxic species, making it a member of a Müllerian mimicry ring.
Photograph: Diego Delso