Tussock Moth Caterpillar (likely a species of Orgyia or Lymantria)

Scientific Name: Orgyia (e.g., Orgyia leucostigma), Lymantria, or related genera within Erebidae

Order & Family: Lepidoptera, Erebidae (formerly Lymantriidae)

Size: 2-4 cm (caterpillar stage)

Tussock Moth Caterpillar (likely a species of Orgyia or Lymantria)

Natural Habitat

Found in forests, woodlands, orchards, and urban areas, typically on various deciduous and coniferous trees and shrubs.

Diet & Feeding

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

Behavior Patterns

Tussock moth caterpillars are known for their hairy, often brightly colored bodies with distinctive 'tussocks' or hair tufts. They are active during the day. Many species have urticating hairs (stinging hairs) that can cause skin irritation. They undergo complete metamorphosis, forming a cocoon before emerging as a moth.

Risks & Benefits

Risks: The urticating hairs on the caterpillar can cause skin irritation, rash, or allergic reactions in humans and pets if touched. In large infestations, they can defoliate trees, causing stress or even death to the plants. Benefits: They serve as a food source for various predators and parasitoids in the ecosystem.

Identified on: 9/23/2025