An ancient wasp may have used an odd structure at its rear end to capture insects and lay its eggs on or inside of them, according to a new study published Thursday in BMC Biology. Researchers named the parasitic creature Sirenobethylus charybdis—both after the sirens of Greek mythology that lured in sailors to their doom and after Charybdis,

"Nothing similar is known from any other insect." Researchers have discovered an extinct parasitic wasp preserved in amber that once lived among the dinosaurs in present-day Myanmar about 99 million years ago.

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.