It is easy to tell the sex of cicada adults. Females have blade-like ovipositors visible on the
bottom surface of the abdomen, and the males do not. Males possess a pair of sound-producing,
or "singing", organs located on the sides of the first abdominal segment. Each sound organ
consists of a large plate-like structure, the operculum, which covers a cavity containing a white
or yellowish membrane and an oval, ribbed, drum-like structure called a timbal. Timbals are
vibrated by strong muscles to produce the cicada song.

Can't we just look between their legs?