Postman Butterfly
Heliconius melpomene
- Order & Family
- Lepidoptera, Nymphalidae
- Size
- Wingspan typically ranges from 70 to 90 mm (2.7 to 3.5 inches)
Natural Habitat
Tropical rainforests and open woodlands in Central and South America
Diet & Feeding
Adult butterflies feed on nectar and pollen from various flowers. Caterpillars feed on passionflower (Passiflora) vines, which are toxic and contribute to the butterfly's unpalatability.
Behavior Patterns
Postman butterflies are known for their aposematic (warning) coloration, which signals their toxicity to predators. They are also involved in Müllerian mimicry complexes, where several unpalatable species share similar warning patterns. They roost communally at night and are active during the day. Females lay eggs individually on passionflower tendrils.
Risks & Benefits
No direct risks to humans. Ecologically, they are important pollinators. Their mimicry relationships are a classic example discussed in evolutionary biology, illustrating natural selection and co-evolution.