Where’s Wildlife · Butterfly Field Guide

Mourning Cloak

Nymphalis antiopa

Pronounced (approx.): nim-FAL-is an-tee-OH-puh

Dark wings edged in pale yellow and blue spots make this early-spring butterfly easy to recognize.

Select the photograph to browse all seven field photographs.

NATIVE TO NORTH AMERICA

At a Glance

Family
Nymphalidae · brush-footed butterflies [1]
Habitat
Wooded areas with host trees and sheltered bark crevices
Host Plants
Willows, elms, poplars, paper birch, and hackberry (caterpillar food) [2]
Adult food
Mostly tree sap and rotting fruit; occasional flower nectar [1]
Quick ID
Dark reddish-brown wings, pale yellow borders, and blue spots [1]

Identification

Open wings: Look for a broad pale border around dark reddish-brown wings, with blue spots just inside the border. [1]

Closed wings: The mottled underside blends with bark; the pale edge remains visible. [1]

Caterpillar: Black with white speckles, red-orange spots down the back, and branching black spines. It is also called the spiny elm caterpillar. [1] [2]

Field Photographs

Compare adult wing patterns and caterpillar markings. Select any photograph to browse the full gallery.

Life Cycle & Host Plants

Adults mate in spring, and females lay eggs on host-plant twigs. The caterpillars feed together on leaves before forming individual chrysalises. [2]

Host trees include black willow, American elm, eastern cottonwood, quaking aspen, paper birch, and common hackberry. [2]

Winter Survival & Seasonal Activity

Mourning Cloaks survive winter as adult butterflies, sheltered beneath bark or in crevices. Warm late-winter or early-spring weather may bring them out while snow is still present. [1]

New adults may rest through the heat of summer, then feed again in fall before winter dormancy. Adults can live about 10–11 months; that figure describes adult longevity, not the time from egg to butterfly. [2]

Range & Sightings

Mourning Cloaks occur across much of North America and temperate Eurasia. [2]

Explore reported sightings below. Observation records are not a complete range map.

Keep Learning

Sources & further reading

[1] University of Minnesota — Mourning Cloak
Jim Walker’s account of adult and caterpillar identification, feeding, and winter shelter.

[2] Illinois Extension — The Mourning Cloak
Christopher Enroth’s guide to host trees, life cycle, seasonal activity, and adult lifespan.

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