Potato Bug Eats Leaves (葉っぱを食べるオオイモムシ, Happa o Taberu Ooimomushi, lit. Leaf-Eating Giant Caterpillar) is an event in Tomba! 2: The Evil Swine Return.
Lead the Potato Bug to the lone leaf in the spiked area.
The bug can be found clinging to one of the seesaws close to the exit of the area leading to the Circus Village. In order to start guiding the bug towards the leaf, make sure that the seesaws is tilting so the bug is on the raised end of the seesaw as it only crawls downwards.
When the bug has reached the end of the final seesaw, it will drop off and land on the leaf. The event is cleared.