New February 2003

Printer-friendly version

Link to PDF of this documentDownload a free PDF of this guide.


Order printed copies

Contents

Caterpillars

Royal moths and silkworm moths

Hornworms

Swallowtails

Tussock moths

Tiger moths

Slug caterpillars

Puss caterpillars

Cutworms, armyworms, underwings and dagger moths

Whites and sulphurs

Tent caterpillars

Brush-footed butterflies, fritillaries and wood nymphs

Prominents and oakworms

Loopers and cankerworms

Milkweed butterflies

Skippers

Bagworms

Snout and grass moths

Sawflies

Related pages

Use our feedback form to ask questions or make comments about IPM1019.

Publication search

All words Any word

Caterpillars in Your Yard and Garden

Link to Caterpillars in Your Yard and Garden

Hackberry emperor caterpillars (Asterocampa celtis) are present from early summer to fall. They produce two generations per year.


Hackberry emperor

Full-grown caterpillars are one to 1.5 inches long. The body is yellow to green with longitudinal to oblique white-yellow stripes on the sides of most body segments. Two barbed horns arise from the green head and a pair of pointed projections from the end of the body. From the base of each horn and running the length of the granulose body to the abdominal tips is a white-yellow line bordered by shades of dark green. Between these parallel lines in the center of the back is an inconspicuous yellow line. The host plant is hackberry (occasionally a serious pest).

About the family

Brush-footed butterflies, fritillaries and wood nymphs belong to the Nymphalidae family. Caterpillars have variable color patterns ranging from longitudinal stripes to mimicking a bird dropping. Most species are covered with prominent spines and tubercles.

Wild thing

IPM1019, new February 2003