Bagworm Moth Larva
Scientific Name: Thyridopteryx ephemeraeformis
Order & Family: Lepidoptera: Psychidae
Size: 1 to 2 inches (2.5 to 5 cm) at maturity

Natural Habitat
Found on various deciduous and coniferous trees including cypress, juniper, cedar, and oak, as well as on man-made structures.
Diet & Feeding
Generalist herbivores that feed on foliage, including leaves and needles of host plants.
Behavior Patterns
Larvae construct protective cases made of silk and plant debris; they carry these cases while feeding and eventually pupate inside them.
Risks & Benefits
Can cause significant defoliation to landscape trees and shrubs; considered a garden pest but provides food for birds and predatory insects.
Identified on: 6/25/2026