Arch grub

Arch grubs were a species of insect native to the planet Geonosis. The sentient Geonosian species, who also dwelt on the planet, would lightly grill arch grubs and eat them. Grilled grubs were especially popular snacks at the Petranaki arena, an arena used by the Geonosians for executions.

Behind the scenes
Arch grubs were first mentioned in the Star Wars Legends sourcebook Inside the Worlds of Star Wars: Attack of the Clones, which was written by Curtis Saxton and Simon Beecroft and released in 2003. The grubs were confirmed to be canon by the sourcebook Star Wars: Absolutely Everything You Need to Know, which was released in 2015.