In one particualr symbiotic relationship between mites and moths, mites of the genus Dicrocheles infest one "ear" of a moth. The moth's ear has three chambers, one of which is separated from the other two by the eardrum. The mites crawl into the moth's ear to lay their eggs, and in the process puncture the delicate eardrum, leaing the moth deaf in that ear. However, the mites are careful to colonize only one ear, because if they were to colonize both ears, the moth would be fully deaf and would be unable to hear approaching bats. The bat would eat the mites along with the moth.