Brood XXII

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Brood XXII (also: The Baton Rouge Brood ) is a population of the "periodic cicadas" ( Magicicada ), which mainly in the region of Baton Rouge , Louisiana , as well as in other places in the southeast of Louisiana and in the southwest of Mississippi in the United States occur. Every 13th year, Brood XXII cicadas burrow en masse to the surface, lay eggs and die within a few weeks. The last occurrence took place in 2014, the next one is expected in 2027.

Opinion on other "Broods"

At the beginning of the 20th century, the entomologist Charles Lester Marlatt identified 30 different populations, of which around 15 could also be confirmed over the years. Brood XXII is one of the original 4 populations with a life cycle of 13 years, one of which appears to be extinct. The other two Broods with a 13-year cycle are Brood XIX (2024) and Brood XXIII (2015, 2028). The fourth, Brood XXI ( The Floridian Brood ), was last sighted in the Florida Panhandle in 1870 , but is now believed to be extinct.

species

Brood XXII includes three of the four species of 13-year-old cicadas: Magicicada tredecim ( Walsh & Riley , 1868), Magicicada tredecassini ( Alexander & Moore , 1962) and Magicicada tredecula ( Alexander & Moore , 1962).

Web links

Individual evidence

  1. ^ Susan L. Post: A Trill of a Lifetime. University of Illinois 2004 ( inhs.uiuc.edu ( Memento of May 10, 2007 in the Internet Archive )).
  2. ↑ Magicicada broods and distributions . National Geographic Society. Retrieved January 1, 2014.
  3. ↑ Brood XXI (13-year) The Floridian Brood . National Geographic Society. Retrieved June 10, 2011.
  4. ↑ Brood XXII, the Baton Rouge Brood, will arrive in 2014 . Cicada Mania. Retrieved January 17, 2014.