Ancient wasp with Venus flytrap-like body discovered

An ancient wasp may have zipped among the dinosaurs, with a body like a Venus flytrap to seize and snatch its prey, scientists reported.

The parasitic wasp's abdomen boasts a set of flappy paddles lined with thin bristles, resembling "a small bear trap attached to the end of it," said study co-author Lars Vilhelmsen from the Natural History Museum of Denmark.

Scientists uncovered over a dozen female wasps preserved in 99-million-year-old amber from the Kachin region in northern Myanmar. The wasp's flaps and teeth-like hairs resemble the structure of the carnivorous Venus flytrap plant, which snaps shut to digest unsuspecting insects.

But the design of the wasp's getup made scientists think its trap was designed to cushion, not crush.

Instead, researchers suggested the flytrap-like structure was used to hold a wriggly insect still while the wasp laid an egg, depositing a baby wasp to feed on and drain its new host.

It is 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 this one. It is unclear when the wasp went extinct.

Scientists named the new wasp Sirenobethylus charybdis, partly for the sea monster from Greek mythology that stirred up wild whirlpools by swallowing and expelling water.

The new study was published on Wednesday in the journal BMC Biology and included researchers from Capital Normal University and the Beijing Xiachong Amber Museum in China.

Associated Press