What the species is and where it came from
Cicadas are Hemipteran insects. Extant species occur worldwide in temperate to tropical climates. Fossil Cicadomorpha date to the Upper Permian period.
How it works, in terms someone would actually use
Cicadas live in trees. They feed on xylem sap. They lay eggs in slits cut into bark. Their wings repel water and kill bacteria on contact. Most sing loudly using tymbals. Magicicada nymphs live underground for 13 or 17 years before emerging all at once.
What it gets right
Synchronised emergence overwhelms predators. Superhydrophobic wings shed water and microbes. Tymbal song carries over long distances in forest canopies. Xylem feeding sustains them in nutrient-poor sap.
What it does not
Cicadas do not control their emergence timing beyond genetic programming. They do not choose mates by song variation. They do not build structures, defend territories, or care for young.
What it changed
Cicada wings redefined biomaterial design. Their nanoscale spikes are the first-known natural surface that kills bacteria by physical rupture—not chemistry.
Who it is for, and who it is not
It is for field biologists studying acoustic signalling, materials scientists examining nanostructures, and ecologists tracking mass emergence events. It is not for birdwatchers, conservation planners, or anyone seeking individual animal personality or social behaviour.
Is it worth your time
Yes—if you want to see mass emergence, hear tymbal song, or examine superhydrophobic wings up close. No—if you expect behavioural complexity beyond feeding, singing, and laying eggs.