Bug Identifier
Tussock Moth (Caterpillar/Moth)
Community identification

Tussock Moth (Caterpillar/Moth)

Orgyia leucostigma (likely White-marked Tussock Moth based on appearance)

Order & Family
Lepidoptera: Erebidae
Size
Caterpillars reach approximately 35 mm (1.4 in); adult wingspans range from 25-35 mm.
See this bug in the Encyclopedia

Natural Habitat

Found in deciduous and coniferous forests, orchards, parks, and suburban gardens across North America.

Diet & Feeding

Larvae are generalist feeders on foliage of many trees including oak, birch, maple, and apple; adults do not feed.

Behavior Patterns

Caterpillars are active during the day; females are wingless and stay on their cocoons to lay egg masses covered in a protective white foam.

Risks & Benefits

The larval hairs can cause skin irritation (urticating) or allergic reactions in humans; they can be occasional pests of ornamental trees by defoliating them.