Summer insects are called wave candy because their tails look like wave candy. In the comic book "The Fall of Mermaid", Xia Bug: Omega with rabbit ear fur ball tail is really cute! Unlike me, I only have a bare tail! Yan Lu: No, wow! You are cute, too, with big eyes, long eyelashes and a tail that can be rolled into wave candy! I like eating corrugated candy best! So the insects in summer are called wave sugar.