A new parasitic wasp species was discovered earlier this year in United States Mississippi. The female wasps of the Syntretus perlmani -species have a sharp stinger-like ovipositor which is used to puncture the exoskeleton of adult fruit flies and lay its eggs inside the fly. Once the egg hatches, the larvae will eat its way out of the host while its still alive and find a substrate to borrow in and begin their cocoon stage.
The media has described this new insect discovery being something akin from the "Alien" movies. I say it is highly accurate. Researches are not yet sure to why this species targets adult fruit flies specifically. Most parasitic species lay their eggs inside hosts when they are young and vulnerable, before they have fully developed their exoskeleton. Further research is required.
Scientists accidentally discover new species of wasp that lays eggs inside living, adult fruit flies, which then burst from the hosts' abdom
