Answer:
Stridulation means to make a shrill creaking noise by rubbing together special bodily structures (according to Merriam-Webster).
It's most commonly associated with insects, such as crickets and grasshoppers, but other animals, like fish, snakes, and spiders, also use this behavior.
The structure used for stridulation is called a stridulatory organ, and it consists of a file and a scraper. The file is a series of ridges on one wing, and the scraper is a flat edge on the other wing. When the file is quickly rubbed across the scraper, it creates vibrations that can be heard. The frequency of the sound changes based on how fast the structures are moved.
Insects use stridulation to attract mates.
Hope this helps!
