Enlarge ImageParent trap. Parasitic wasps inject caterpillars with a virus to disable their natural defenses and allow wasp larvae to grow within caterpillars' bodies. Credit: : Image courtesy of Alex Wild/myrmecos.net Ancient Virus Gave Wasps Their Sting By Rachel ZelkowitzScienceNOW Daily News12 February 2009There's no consent for these surrogate parents. Tens of thousands of wasp species lay their eggs inside caterpillars, injecting toxins that paralyze the hosts and allow their young to feast on the innards with impunity. Researchers have long wondered what exactly these toxins are and where they came from. The answers, a new genetic analysis reveals,...