This becomes critically important when species are threatened or endangered. There's also economic reasoning for knowing bug languages. They strum by rubbing a stiff, scraperlike edge of one wing against a toothed file of the other. Some songs, though, are used to mark territory. Just count the number of cricket chirps in 14 seconds, then add 40.
Songs grow faster and slower as the temperature changes.
Some of these cold-blooded creatures even shiver when things turn frosty. The robust conehead katydid can strum up to 200 times a second, just to warm up. And when things really heat up, crickets raise the roof. Others scale back their songs as the mercury drops. She's probably not going to be scraping as fast.