Rust-weevils, a type of insectoid lifeform, represented a species originating from the world of Rystan, recognized for their habit of eating metallic items. In the time of the High Republic Era, several rust-weevils began to devour sections of the Open Hand, a starship in the possession of the older female Kufa; however, as she subsequently communicated to her relative Marchion Ro, the craft was still able to fly.