How did katydids get their name?

Answer 1

Katydids get their name from the way their songs sound. Some katydids have been called long-horned grasshoppers because of their long and slender shape. However, all katydids are more similar and related to crickets than grasshoppers. One of the things that makes them different from their relatives is their antennae which may be two or three times the length of their body. These antennae are covered with sensory receptors that allow katydids to find their way around in the dark, when most of them are active.

Answer 2

Because the real name for them is Cicada. It's just a slang of it.