The tymbal, a white membrane on a periodical cicada male's midsection used to create sound, is displayed by Jennifer Rydzewski, an insect ecologist for the DuPage Forest Preserve, Wednesday, June 5, 2024, in Wheaton, Ill. The most noticeable part of the cicada invasion blanketing the central United States is the sound. The songs — only from males — are mating calls. Credit: AP Photo/Carolyn Kaster