Caterpillar
Videos
Caterpillars are the larval stage of members of the order Lepidoptera.
Euthalia aconthea (baron butterfly) caterpillar found in India
Caterpillar of Papilio machaon
A monarch butterfly (Danaus plexippus) caterpillar feeding on an unopened seed pod of swamp milkweed
Caterpillar cocoon on a pine tree branch.
Bagworm moth
Videos
The Psychidae are a family of the Lepidoptera. The bagworm family is fairly small, with about 1,350 species described. Bagworm species are found globally, with some, such as the snailcase bagworm, in modern times settling continents where they are not native.
Image: Case moth 02
Bag of Metura elongatus which can grow to more than 120 mm (4.7 in) in length
"Bag" of Pachythelia villosella (Oiketicinae)