Bagworm (Larva/Caterpillar)

Found on various host plants including conifers (cedar, juniper, pine) and deciduous trees (oak, maple), as well as on structures like house siding and fences.

Larvae are generalist feeders that consume the leaves or needles of host plants, often causing significant defoliation.

Larvae construct a protective silken case covered with plant debris and twigs from their host tree. They carry this 'bag' with them as they move and feed. They pupate inside the bag, and adult females of many species are flightless and never leave the case.

They are considered a significant horticultural pest as they can kill trees (especially evergreens) via defoliation. They pose no direct risk to humans, but can cause aesthetic damage to landscapes and structures.