MORE: Dozens of dinosaur footprints found at Australian school ... the researchers said. Cuckoo wasps and bethylid wasps are modern-day parasitoids within the same superfamily, Chrysidoidea ...

The closest wasp comparisons are cuckoo and bethylid wasps. Both lay their eggs in the nests of other wasps. The larvae feed on the other wasps' young as they hatch.

It's a playbook adapted by many parasitic wasps, including modern-day cuckoo and bethylid wasps, to exploit insects. But no known wasp or any other insect does so with bizarre flaps quite like ...

For example, a group of wasps known as cuckoo wasps lay their eggs in the nest of another wasp species, and the larvae feast on their new hosts’ young once they hatch.Amber fossils offer a ...