Entoma
Zebra swallowtail, Eurytides marcellus, plate

Swallowtails

Eurytides marcellus

Zebra swallowtail

This butterfly is the only white, black-striped swallowtail in North America, and its caterpillars can develop only on pawpaw trees and their close relatives.

WhereMoist forests near pawpaw trees
Size50 to 105 mm wingspan
WhenMarch to September

The zebra swallowtail has triangular, white to greenish white wings crossed by black longitudinal stripes, with long swordlike tails, blue spots at the corner of the hindwing, and a red spot near the body.

Caterpillars feed only on pawpaw leaves, and summer-generation adults grow noticeably longer tails and wider black stripes than the spring generation that flies earlier in the year.

Traits

Habitat

Woodland

Colour

White, Black, Blue

Active

Day

To people

Feeds on flower nectar and damp soil minerals; poses no risk to people.

Activity through the year

Often confused with

Black swallowtailOpen entry ›
Papilio polyxenes

Black with two rows of yellow spots and short tails, lacking the zebra swallowtail's white ground color, long black stripes, and long swordlike tails.

Questions

Is the Zebra swallowtail dangerous to people?

Feeds on flower nectar and damp soil minerals; poses no risk to people.

When can you see the Zebra swallowtail?

The Zebra swallowtail can be seen from March to September, by day.

Plate retouched from a museum specimen photo by Davidson College, CC0, GBIF Licence

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Butterflies and moths›Swallowtails›Eurytides

Last updated 2026-09-26. Every entry is checked against published sources.