Bug Identifier
White-marked tussock moth caterpillar
Community identification

White-marked tussock moth caterpillar

Orgyia leucostigma

Order & Family
Lepidoptera; Erebidae (subfamily Lymantriinae)
Size
Larvae typically grow to about 25–35 mm long.
See this bug in the Encyclopedia

Natural Habitat

Woodlands, parks, and gardens across much of eastern North America; larvae feed on trees and shrubs.

Diet & Feeding

Caterpillars eat leaves from many deciduous trees and shrubs, including oak, maple, and birch.

Behavior Patterns

The caterpillar has conspicuous pale hairs and dark dorsal tufts; it wanders while searching for a place to pupate. Adults are short-lived moths, and females are wingless.

Risks & Benefits

Its hairs can cause skin irritation or an allergic rash, so avoid handling it. Larvae are part of the food web but can defoliate trees when abundant.