Katydid

The insect family Tettigoniidae, known in American English as katydids and in British English as bush-crickets, contains more than 6,400 species. It is part of the suborder Ensifera and the only family in the superfamily Tettigonioidea. They are also known as long-horned grasshoppers, although they are more closely related to crickets than to grasshoppers.

Katydid in Atlantis
The species of katydid native to Atlantis was relatively large, usually the size of mice, and basically flightless. Before the arrival of Europeans, katydids filled a role in Atlantis's ecology similar to that of mice in other parts of the world.

Katydids were edible, if not terribly tasty.