Cicada double brood event: What to expect when trillions of bugs emerge in Eastern US - After 221Years Cicadapocalypse Returns To The US With Double Brood Emergence

For the first time in 221 years, two gigantic broods of periodical cicadas are set to emerge from the ground simultaneously in the U.S. to engage in a raucous mating frenzy.

The rare double cicada brood will include the two of the largest cicada broods, Brood XIII and XIX, which will co-emerge en mass after having lived underground for 17 and 13 years, respectively.

Periodical broods are found only in eastern North America. When they finally emerge after a long juvenile period, they do so in enormous numbers. Once hatched, the immature periodical cicadas, known as nymphs, live off tree root sap underground before emerging in adulthood to mate — a noisy and frantic display that takes place over several weeks. Brood 13, which emerges every 17 years, and Brood 19, which emerges every 13, will join together for the first time since 1803, when Thomas Jefferson was president.

Source video: https://www.youtube.com/watch?v=D-gUqSxaNqY

Source Text:
https://www.livescience.com/animals/insects/cicada-double-brood-event-what-to-expect-when-trillions-of-bugs-emerge-in-eastern-us

and

https://www.accuweather.com/en/weather-news/trillions-of-cicadas-to-swarm-u-s-first-double-brood-emergence-in-200-years/1638706