Tussock Moth Caterpillar (likely White-marked Tussock Moth or similar species)

Natural Habitat

Forests, woodlands, urban and suburban areas, on various deciduous and coniferous trees.

Diet & Feeding

Herbivorous. Caterpillars feed on the leaves of a wide variety of trees and shrubs, including oak, maple, birch, apple, and conifer species.

Behavior Patterns

Caterpillars are often quite hairy. They typically go through several instars (molts) before pupating. Some species, like the White-marked Tussock Moth, have distinct hair tufts and 'tussocks' on their backs, and two prominent hair pencils (long tufts) near the head and one at the rear. Males are winged and active, while females are often flightless and lay eggs on their cocoons.

Risks & Benefits

Potential Risks: The hairs on tussock moth caterpillars can cause skin irritation, allergic reactions, or dermatitis in some individuals if touched. They can also defoliate trees during outbreaks, which can be a concern for horticulture and forestry. Potential Benefits: As with many insects, they serve as a food source for other animals (birds, parasitic wasps, etc.) and are part of the ecosystem's food web.

Identified on: 9/24/2025