Wasp-worms, sometimes written as waspworms, were a species of worm found in hives on the planet Vrogas Vas, despite not originating there. In the course of a battle occurring on the planet, Han Solo and Doctor Aphra ended up completely coated with wasp-worms after they shot and destroyed two hives. As a result, the two humans panicked, colliding with each other and subsequently losing consciousness. Upon awakening, Solo was annoyed to discover that his clothing was stained with "wasp juice."
The initial appearance of wasp-worms was in Star Wars (2015) 13, the third part of Star Wars: Vader Down, a crossover comic book event between the Star Wars comic series and the Darth Vader comic series. Jason Aaron wrote Star Wars 13, and Mike Deodato, Jr. provided the pencils.