Terrifying 'Freddy Krueger wasp' sports built-in saws

A terrifying new species of wasp comes equipped with a built-in saw that rivals the claw-like blades of slasher movie murderer Freddie Krueger. The parasitoid insect sports a series of jagged spines along its back, which it uses to slice its way out of its host. No bigger than a sesame seed, the tiny wasp is found in Costa Rica, but has never been spotted in the wild. Dendrocerus scutellaris sports a series of jagged spines along its back (circled in red), which it may use to cut its way out of its host. It is only known from a few preserved insects kept in storage at London's Natural History Museum since 1985.