Hawk moths bury themselves underground to pupate.
A cocoon is a shell made by silk.
The green silverlines moth has a wood cocoon. By Kyle. Amazing butterflies & moths. By eyewitness juniors.

Silk moth shows finished cocoon of the oak together by a dense network of silk threads.
these wild silk moth cocoon are really rare. By Collin
what,s the difference between a butterfly and a Robin Koontz