Cicada

Lore & Background

Cicadas have existed since the time of the dinosaurs, with fossil records dating back over 200 million years. Their most famous representatives are the periodical cicadas of North America, which belong to the genus Magicicada. These insects synchronize their life cycles so precisely that entire populations emerge simultaneously after spending 13 or 17 years underground as nymphs feeding on tree roots. This strategy is an evolutionary adaptation known as predator satiation; by appearing in such overwhelming numbers, they ensure that predators cannot eat them all, allowing enough survivors to reproduce and continue the cycle. They achieve this through tymbals, specialized ribbed membranes on their abdomen that buckle rapidly when muscles contract, creating a clicking sound that resonates within their hollow bodies. While often mistaken for crickets or grasshoppers, cicadas are distinct in having clear wings held roof-like over their bodies and prominent eyes set wide apart on their heads.

In Their Own Story

The air hung heavy and still, the heat pressing down on the oak canopy like a physical weight. Then, it began—a low hum that swelled into a deafening roar, vibrating through the soles of boots and rattling the windows of the cabin. It was not the wind, but the arrival of the Brood. Outside, the trees were no longer green; they were black with movement. Thousands of cicadas clung to every branch, their wings clicking in a chaotic rhythm that drowned out thought. A single nymph broke through the soil near the porch, its pale body trembling as it began the ascent to molt into its final form. The forest floor was carpeted in discarded shells, ghostly reminders of the years spent in darkness, now replaced by a living, singing tide that would last only a few fleeting weeks before vanishing back into the earth.

Reader's Guide

Cicadas thrive in temperate forests and woodlands globally, with North America hosting their most spectacular diversity. They are bound to deciduous giants—oaks, maples, and willows—that serve as both nursery and larder, providing the xylem sap that sustains them from underground nymph to singing adult. Ecologically, they are nature's tireless engineers. As millions of nymphs burst from the earth to molt, their tunneling aerates compacted soil, creating vital channels for water infiltration and root growth. Their massive emergences deliver a sudden, nutrient-rich pulse to the forest floor; when they eventually die, their decaying bodies fertilize the very trees that hosted them, completing a cycle of life that has persisted since the age of dinosaurs.

Did You Know?

• Periodical cicadas are the only insects known to evolve life cycles based on prime numbers (13 or 17 years), a mathematical trick designed to minimize synchronization with predator population booms.
• Male cicadas lack external ears; instead, they 'hear' sound waves through tympanal organs located on their bellies, while females detect vibrations primarily through sensory structures on their legs.
• The ghostly exoskeletons left behind after molting are so abundant and delicate that in some cultures, they are harvested to create unique paper or ground into traditional medicines.
• To survive the long, cold years underground, cicadas produce natural antifreeze proteins within their bodies, allowing them to endure temperatures near freezing without succumbing to frost.