Bagworm (Thyridopteryx%20ephemeraeformis) - These%20unique%20moths%20enclose%20themselves%20in%20silken%20bag%20comprised%20of%20twigs%2C%20silk%2C%20and%20other%20debris.%20The%20moth%20primarily%20affects%20cedar%2C%20pine%2C%20and%20arborvitae%20species%2C%20but%20has%20also%20been%20known%20to%20affect%20some%20hardwoods.%20Heavy%20infestations%20may%20result%20in%20the%20tree%20becoming%20completely%20defoliated.