Hiroi Michiaki: And what was this? Ahh, we talked [about this]. The bagworm larva? The bagworm larva doesn’t have a body.
Mrs. Hiroi: Yeah.
Hiroi Michiaki: Bagworm larva dangle [from branches] like this. From here. It’s a top with that sort of shape, one that leaps out. The bagworm inside jumps out, and it’s wearing a bowtie.
For Japanese, see this page.
For video, see this page.