The Children of Time series by Adrian Tchaikovsky has a species of spiders which communicate by moving their palps and tapping webs with their legs. When they first encounter humans they don’t figure out the vibrations they make is a form of communication right away. As sound travels poorly onto webs and not in a way they are used to. Also humans make too much noise with all their other vibrations, so the tiny bit of sound that gets through gets lost in the noise.

Big recommend on that series, it’s awesome!