
Community identification
Bagworm Moth (Larva/Case)
Thyridopteryx ephemeraeformis
- Order & Family
- Lepidoptera: Psychidae
- Size
- Larval protective cases range from 1 to 2 inches (2.5 to 5 cm) in length.
Natural Habitat
Commonly found on coniferous and deciduous trees and shrubs, including cedar, juniper, and maple.
Diet & Feeding
Larvae feed on the leaves and needles of host plants, often causing significant defoliation.
Behavior Patterns
Larvae construct a protective silk case covered with bits of plant material. They carry this case as they move and feed, eventually pupating inside it.
Risks & Benefits
Considered a landscape pest because they can kill host trees through heavy defoliation; however, they provide food for birds and predatory insects.