The grass-carrying wasp: A solitary wasp that builds an unusual nest

The macabre wasp that lays its eggs *inside* live fruit flies 🪰 Drosophila fruit flies are well studied insects. For over a century, these tiny animals have been at the centre of some of the biggest molecular and genetic breakthroughs in science. But despite being under the microscope all this time, it looks like researchers have missed something. And that something is a minuscule wasp that preys on them. This wasp species, named Syntretus perlmani, was discovered by chance in an infected fruit