Where’s Wildlife · Butterfly Field Guide

Hackberry Emperor

Asterocampa celtis

Pronounced (approx.): ass-ter-oh-KAM-puh SEL-tiss

A quick-flying woodland butterfly with patterned brown wings—and a habit of landing on people to sip salts from sweat.

Select the photograph to browse all four field photographs.

NATIVE TO NORTH AMERICA

At a Glance

Family
Nymphalidae · brush-footed butterflies
Habitat
Woodlands, parks, and yards with hackberry trees [2]
Host Plants
Hackberries (Celtis species), including sugarberry — caterpillar food [1]
Adult food
Tree sap, fermenting fruit, and other nutrient-rich fluids; rarely nectar [1]
Quick ID
White spots near the forewing tip and a black forewing eyespot [2]

Identification

Above: Tan-brown wings have darker forewing tips marked with white spots and a distinct black eyespot. [2]

Below: A row of small hindwing eyespots has blue-green centers. [1]

Similar species: Tawny Emperor is more rusty in color and lacks the white tip spots and prominent black forewing eyespot. [2]

Field Photographs

Look closely at the wing markings in these four field photographs. Select any image to open the full gallery.

Life Cycle & Host Plants

Females lay eggs on the undersides of hackberry leaves. Caterpillars feed on the foliage and later form green chrysalises. Partly grown caterpillars overwinter in rolled leaves. [1]

Common Hackberry (Celtis occidentalis) and Sugarberry (Celtis laevigata) are host trees. These leaves supply the caterpillar food; adults have a very different diet. [1]

Why It Lands on People

Hackberry Emperors may land on skin to take up salts from sweat. Adults also visit damp ground, tree sap, and rotting fruit, and seldom feed at flowers. [2]

Males often watch from a perch and dart out at passing animals or butterflies. Their fast, erratic flight can make them easier to notice than to photograph. [2]

Range & Sightings

Explore reported Hackberry Emperor sightings. Observation records show where people have documented butterflies and are not a complete range map.

Keep Learning

Sources & further reading

[1] UF/IFAS Extension — Hackberry Emperor
Donald W. Hall and Jerry F. Butler. Identification, host trees, feeding, and overwintering biology.

[2] Missouri Department of Conservation — Hackberry Emperor
Habitat, adult behavior, and comparison with Tawny Emperor.

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