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,

An extinct species of parasitic wasp dating back nearly 99 million years was found preserved in amber, according to researchers.

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.