Tussock Moth Pupa/Cocoon

Natural Habitat

Found on tree trunks, branches, fences, and the sides of buildings in hardwood forests and suburban areas.

Diet & Feeding

In the pupal stage, it does not eat. As larvae (caterpillars), they consume the leaves of various deciduous trees including oak, willow, and maple.

Behavior Patterns

The larva spins a protective silk cocoon often incorporating its own urticating hairs for defense. It remains in this dormant stage for several weeks before emerging as an adult moth.

Risks & Benefits

Risk: The hairs embedded in the cocoon can cause severe skin irritation, rashes, or allergic reactions in humans (urticaria) if handled. Benefit: They serve as a food source for birds and parasitic wasps within the ecosystem.

Identified on: 5/18/2026