The mantis ootheca is a container in Fallout: New Vegas
- Two of these containers can be found in the Goodsprings schoolhouse.
- Six of them can be found in Vault 22.
Shooting a mantis ootheca destroys it and results in several giant mantis nymphs spawning in its place. This will always result in the destruction of any items that may be inside. It can still be destroyed (and have the nymphs spawn) after it is emptied of eggs.