Cavehopper

History
This albino-looking grasshopper can be found in the cool caves of the Fire Nation. This bug hates sunlight, preferring the dimly lit caves where it eats algae and other cave vegetation. Sadly, cave-hoppers are among the favorite snacks of the Toucan-Puffins. nick.com). They have long antennae, two short front legs and two larger hind legs, ending in four-digit semi-webbed feet with toe-pads.

Cave-Hoppers first appear in "The Headband."

Connection
Cave-Hoppers seem to be based on grasshoppers, with the difference that real-life grasshoppers have six legs, wings (only on adult individuals) and short antennae. Grasshoppers are herbivorous insects whose large hind legs are adapted for leaping, and they are generally brown in color, though some species are green.