Bagworm

The Bagworm is a bug in the. It first appeared in and has appeared in all subsequent games except. Similar to the Spider, the Bagworm can be shaken out of hardwood or cedar trees. Upon shaking, it dangles from the tree for a few seconds before disappearing back into the tree. The tree can be shaken repeatedly if the Bagworm is not immediately caught.

In
In, Bagworms do not crawl back into the tree after being shaken unless the player leaves the acre.

In
Blathers will say this after taking the Bagworm:

Once donated, Bagworms can be found in the upper left corner of the insect room in the museum, hanging from a tree.

In
Upon donation to the museum, the Bagworm can be found on the leftmost tree in the back of the upper right room of the Insect section. The exhibit has this to say about the Bagworm:

In
When Blathers accepts the Bagworm for donation, he says:

Real-world information
Bagworms are the larvae of various species of moth that all build cocoons from environmental elements such as lichen, plant material, and sometimes silk. They measure from one to fifteen centimeters.

Bagworms can be found around the world, and there are around 600 known species. The casing of the bagworm serves to protect and camouflage the larvae until it emerges as a moth.