Astromaggot
Astro Maggots are huge, flying herbivorous larvae. They can be found resting in all levels.
Once fully mature. an Astromaggot will float off the surface of one planet to pupate in space and emerge as an adult Astrobeetle, capable of living tremendously long periods an Astrobeetle will travel immense distances to lay eggs on new planets and repeat the process elsewhere in the universe.