The Lelepago Pterix is an enemy in Xenoblade Chronicles that are members of the Pterix family. They can be found at level 55 circling around the east side of the Digit 2 Plain on the Fallen Arm. Defeating two of them is required to complete the "A Tough Battle" quest. They can also drop Pterix Energy Eggs, which may be used as one method of completing the "Lifespan of a Machina" quest.