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Common Mormon

Papilio polytes

Lepidoptera / Papilionidae

The common Mormon has several female wing patterns, including male-like and mimetic forms. Experiments link this female-limited variation to doublesex regulation and show how mimetic patterns can reduce attacks on butterfly replicas in field trials.

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Papilio polytes, dorsal view
A cream ribbonPapilio polytes · Dorsal view.

At a glance

Family ↘
Papilionidae, the swallowtail family. [1]
Variation ↘
Females can have male-like or mimetic wing patterns. [6][1]
Larval plants ↘
Citrus, including lime, in the Singapore account. [1]
Research ↘
doublesex-associated regulation helps control female mimetic patterns. [2][6]

Species and female variation

Papilio polytes, the common Mormon, belongs to Papilionidae. The Singapore account treats the local butterfly as the subspecies romulus and documents distinct female forms. [1]

Male-like and mimetic females

Males have dark wings with a pale hindwing band. Females of form cyrus share a male-like pattern, while mimetic forms have white and red wing markings resembling rose butterflies. The Mormon’s black abdomen distinguishes it from the red-bodied common rose. [1][6]

South and Southeast Asian occurrence

The species occurs across South and Southeast Asia. Singapore records include gardens and other vegetated urban habitats; the developmental research includes Okinawan material. [1][6]

Larval appearance and defence

Young larvae resemble bird droppings, while later larvae become green. Larvae possess an extensible osmeterium used in defence. [3]

Citrus hosts and nectar feeding

The Singapore account records Citrus hosts, including lime. Adults visit flowers for nectar. [1]

Mate-selection experiments

In a large captive flight arena, all 22 observed male courtship events involved active females. Nonmimetic females made up approximately 23% of the available females but received half of the observed courtships. [4]

Developmental regulation of mimicry

Genetic experiments identified doublesex as a central regulator of female mimicry. Later developmental work showed that its mimetic form regulates a network including Wnt1 and Wnt6, promoting red and white pattern elements while suppressing elements of the nonmimetic pattern. [2][6]

Female-limited Batesian mimicry

The mimetic female pattern is an example of Batesian mimicry: a palatable butterfly resembles a protected model. In field experiments, stationary paper replicas received few attacks and showed no clear difference between patterns. When spring-mounted replicas with mealworm bodies were used, birds attacked the mimetic pattern less often than the nonmimetic one. [5]

Species, subspecies and form names

Romulus is a subspecies name; cyrus and polytes name female forms within the species. Form cyrus is nonmimetic and male-like, while form polytes has the mimetic pattern. [1][6]

Wing pattern and abdomen

The pale hindwing band identifies the male-like pattern, while white and red markings characterize mimetic females. The black abdomen provides a separate distinction from red-bodied rose butterflies. [1][6]

Documented pattern variation

Dark wing fields, pale markings and red accents retain the documented pattern boundaries. The black body remains visually distinct from the wing markings. [1]

Protecting scaled wings

Avoid touching scaled wings or the fragile antennae. Keep a physical specimen enclosed, protected from direct light, moisture and insect pests. [7]

Sex, form and genetic regulation

Can a female have a male-like pattern? Yes. Form cyrus is a nonmimetic female form whose wing pattern resembles that of the male. [1][6]

How does a mimetic common Mormon differ from a common rose? The common Mormon has a black abdomen; the common rose has a red body. [1]

Regional forms and experimental studies

The Singapore account documents local forms and hosts. Genetic studies examine doublesex regulation, the Ethology courtship study reports mate-selection behaviour, and field experiments test attacks on mimetic and nonmimetic replicas. [1][2][6][4][5]

  1. NParks Singapore: Common Mormon ↗

    National Parks Board, Singapore · Accessed 2026-10-09

  2. Kunte and colleagues 2014: doublesex and butterfly mimicry ↗

    Nature · Accessed 2026-10-09

  3. University of Michigan Animal Diversity Web: Papilio polytes ↗

    University of Michigan, Animal Diversity Web · Accessed 2026-10-09

  4. Behaviour before beauty: Signal weighting during mate selection in the butterfly Papilio polytes ↗

    Westerman et al.; Ethology 125:565–574 (2019) · Accessed 2026-10-09

  5. Experimental field tests of Batesian mimicry in Papilio polytes ↗

    Ecology and Evolution · Accessed 2026-10-09

  6. Papilio polytes doublesex-orchestrated gene network ↗

    Communications Biology · Accessed 2026-10-09

  7. Caring for natural history collections ↗

    Canadian Conservation Institute · Accessed 2026-10-09

  8. About Butterflies ↗

    Smithsonian Gardens · Accessed 2026-10-09

Artworks in the collection

Framed and digital artworks featuring this species. Current options and prices are listed on Etsy.

Related species

Sources checked 2026-10-09. Illustrations · Luminary Oddities.

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