
Community identification
American Dagger Moth Caterpillar
Acronicta americana
- Order & Family
- Lepidoptera: Noctuidae
- Size
- Up to 2 inches (50 mm) in length
Natural Habitat
Deciduous forests, woodlands, parks, and suburban landscapes across Eastern and Central North America
Diet & Feeding
Herbivorous; feeds on leaves of broadleaf trees such as oak, maple, birch, elm, and willow
Behavior Patterns
Solitary feeder during late summer and autumn; active during the day and night before crawling down tree trunks to spin a silky cocoon in leaf litter or crevices for pupation
Risks & Benefits
The yellow setae (hairs) contain mild urticating properties that can cause skin irritation or itching upon handling; ecologically serves as a food source for birds and parasitoid wasps, and adults act as minor pollinators