Magicicada tredecassini is a species of periodical cicada endemic to the United States.

It has a 13-year lifecycle but is otherwise indistinguishable from the 17-year periodical cicada Magicicada cassini.

The two species are usually discussed together as "cassini periodical cicadas" or "cassini-type periodical cicadas."

Unlike other periodical cicadas, cassini-type males may synchronize their courting behavior so that tens of thousands of males sing and fly in unison.

[1][2][3] Their median life cycle from egg to natural adult death is around thirteen years.