Researchers named the parasitic creature Sirenobethylus charybdis —both after the sirens of Greek mythology that lured in sailors to their doom and after Charybdis, a mythical sea monster that created large whirlpools to drag its unsuspecting victims underwater.

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