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Bugs & Butterflies UK

Postman Butterfly | Heliconius melpomene PUPAE

Postman Butterfly | Heliconius melpomene PUPAE

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Heliconius melpomene, commonly known as the postman butterfly, is a brightly colored species native to Central and South America. Part of the Nymphalidae family and subfamily Heliconiinae, this butterfly is known for its vivid red, black, and yellow wing patterns, which serve as aposematic signals to warn predators of its toxicity. These colors are not only beautiful but also a product of Müllerian mimicry, where it shares similar patterns with other toxic species, enhancing protection for all involved species.

The postman butterfly is especially notable for its feeding and behavioral patterns. Unlike most butterflies, it feeds on pollen in addition to nectar, which gives it an extended lifespan as it is capable of digesting pollen's amino acids. The protein from pollen enables the postman to live for several months, a rare trait among butterflies. Its host plants are species of the Passifloraceae family, primarily Passiflora, or passion vines, which contain toxic compounds ingested by caterpillars and retained into adulthood as a defense.

Heliconius melpomene has been widely studied in genetics and evolution due to its fascinating color pattern variations and mimicry with other species, making it a model organism for studying adaptation and natural selection. It plays an essential role in pollination and contributes to the rich biodiversity of its tropical habitats.

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