Mantis egg

 is a miscellaneous item in Fallout: New Vegas. It is used in Bleed Me Dry, the Courier is required to find a dozen eggs during this quest.

Location

 * Found on any Giant mantis variety, including Giant Mantis Nymph and Mantis ootheca.
 * The quest also directs you to Vault 22 where there is a plethora of mantis eggs on the 5th floor.