
Community identification
Woolly Bear Caterpillar (likely from the Isabella Tiger Moth)
Pyrrharctia isabella
- Order & Family
- Lepidoptera, Erebidae
- Size
- Caterpillars average 1.5 - 2 inches (3.8 - 5 cm) in length.
Natural Habitat
Widely distributed across North America, found in forests, fields, gardens, and urban areas.
Diet & Feeding
Broadleaf plants, including dandelion, plantain, clover, maple, elm, and sunflower.
Behavior Patterns
Larvae (caterpillars) are known for their distinctive bristly appearance and tend to roll into a tight ball when disturbed. They overwinter as caterpillars and resume feeding in the spring before pupating. The adult form is a medium-sized, yellowish-orange moth.
Risks & Benefits
Generally harmless to humans; the bristles can cause mild irritation for some individuals if handled. They are beneficial as decomposers of plant matter and serve as a food source for other animals.