American Dagger Moth Caterpillar

Found in deciduous forests, woodlands, and urban backyards across North America.

Feeds on the leaves of various deciduous trees including oak, ash, maple, elm, and birch.

Active from spring through autumn. The larva is covered in dense yellow or white bristles with long black lash-like hairs. It overwinter in a cocoon on the ground.

Risk: The hairs (setae) can cause skin irritation or a painful rash if touched by sensitive individuals. Benefits: Serves as a food source for birds and small mammals; adults act as minor pollinators.