Cicada symphony - Dual broods set for rare, audible emergence

USAgNet - 01/29/2024

Spring 2024 marks a special event in the natural world. Two broods of periodic cicadas, known as Brood XIX and Brood XIII, are set to make a rare simultaneous appearance. This phenomenon, last witnessed in 1803, will not recur for another 221 years.

Brood XIX, a 13-year cicada group, is the largest of its kind in the U.S., spanning 15 states. Brood XIII, emerging every 17 years, is found in five states. Both broods are known for their overwhelming numbers, a survival strategy to outpace predators.

These cicadas spend years underground as nymphs before emerging en masse. Their loud chorus can reach up to 100 decibels, equivalent to a hair dryer's noise. This sound is part of their mating ritual, with males producing a distinctive song to attract females.

The lifecycle of these insects is fascinating. After mating, females lay eggs on tree branches, and the adults die soon after. The nymphs then start their long underground phase, feeding on tree sap.

While cicadas are often mistaken for locusts, they are harmless to crops and play a crucial role in the ecosystem. They provide a food source for wildlife and are considered vital in the food chain.

This year's event promises to be a memorable one, with Arkansas and northern states like Illinois expected to be at the heart of the action. For nature enthusiasts and students alike, the 2024 cicada emergence offers a unique opportunity to witness and learn from this extraordinary natural event.

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