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Postman

Heliconius melpomene

Lepidoptera / Nymphalidae

Heliconius melpomene is a Neotropical passion-vine butterfly with black wings and geographically variable red or yellow markings. Adults collect pollen as well as nectar, and laboratory analyses have detected protein-digesting enzymes in their saliva.

Read the species account
Heliconius melpomene, dorsal view
PostmanDorsal view.Illustration adapted from Heliconius melpomene penelope, male dorsal specimen photograph (MHNT) by Didier Descouens. CC BY-SA 4.0.

At a glance

Family ↘
Nymphalidae [1]
Larval hosts ↘
Passiflora species [1]

Identity and classification

Heliconius melpomene is a passion-vine butterfly described by Linnaeus in 1758. [1]

Morphology and identification

Black wings carry red or yellow bands whose arrangement varies geographically. Regional forms resemble corresponding patterns of Heliconius erato. Forewings measure 35–39 mm. [1]

Distribution and habitat

The species is widespread in the Neotropics, occurring along forest edges, rivers and streams from sea level to approximately 1,400 m. [1]

Life cycle

Females place yellow eggs singly on young host leaves or stipules. Mature larvae have white bodies, black spots and spines, and orange heads. Brown pupae bear gold dorsal spots and black abdominal spines. [1]

Feeding and host plants

Larvae feed on Passiflora. Central American field hosts include P. oerstedii and P. menispermifolia; other populations use additional passion-vine species. [1]

Behaviour

Adults fly in the lower forest layer and gather in small night roosts on twigs or tendrils. Females may mate more than once. [1]

Distinctive biology

Laboratory assays detected protease activity in saliva collected from male and female H. melpomene after stimulation with pollen or fine glass beads. Pollen-only controls showed little activity, supporting a salivary source for the protein digestion. The result establishes an enzymatic component of pollen processing, in addition to the mechanical manipulation performed by the proboscis. [2]

Nomenclature and history

Melpomene takes its name from the Greek Muse of tragedy. [1]

Artistic interpretation

Display and care

Keep the enclosure closed and display it in indirect light, away from heat and damp conditions. Handle the frame by its edges and clean only its exterior according to the maker’s instructions.

Sources and further reading

  1. Heliconius melpomene ↗

    Heliconius research community, Heliconius Homepage · Accessed 2026-10-11

  2. Evidence of protease in the saliva of the butterfly Heliconius melpomene (L.) ↗

    Eberhard, Hrassnigg, Crailsheim and Krenn, Journal of Insect Physiology 53(2), 126–131(2007) · Accessed 2026-10-11

Sources checked 2026-10-11. Illustrations · Luminary Oddities.

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