Deuteragenia ossarium, the Bone-house Wasp, is a species of pompilid wasp discovered in south-east China in 2014. It was named after graveyard bone-houses or ossuaries, from its characteristic use of a vestibular cell filled with dead ants which is built by the female wasp to close the nest after she lays her eggs. This technique is theorized to make the species' nests less vulnerable to predatory enemies than nests of other sympatric trap-nesting wasps, possibly by utilizing chemical cues in odors from the dead ants to camouflage the nest from predators, or repel them.