- "The ptero-creatures we encountered in the cavern are irlings. They are nocturnal insects with visual sensitivity to thermal registers."
Irlings were a large, non-sentient species of insectoid ptero-creatures that lived on the planet Ord Mantell. They were nocturnal creatures, preferring dark environments such as caverns and mining tunnels, and would form hives made out of a web-like substance within them. They were visually sensitive to light and became highly aggressive if disturbed by noise during their sleep.