
Community identification
Tussock Moth Caterpillar
Orgyia thyellina
- Order & Family
- Order: Lepidoptera, Family: Erebidae
- Size
- 30mm to 40mm in length for mature larvae.
Natural Habitat
Found in gardens, forests, and suburban areas, often seen on host trees and shrubs or climbing on fences and walls.
Diet & Feeding
Broad-leaved trees and shrubs including fruit trees like apples, pears, and cherries, as well as oaks and willows.
Behavior Patterns
The caterpillars are active during the day. They are known for their distinctive hair tufts (tussocks). In some species within this genus, adult females are flightless and stay on their cocoons to lay eggs.
Risks & Benefits
Risks: The hairs of these caterpillars can cause skin irritation or 'urticaria' in humans. They can also act as garden pests by defoliating ornamental and fruit trees. Benefits: They serve as a food source for birds and parasitic wasps.