2024 Cicadas Monthly. Emerging every year and in far fewer numbers, annual cicadas are predominantly green, while periodical cicadas have red eyes and red wing veins. Trillions of cicadas will emerge in 2024.
โ periodical cicadas, which only live in midwestern and eastern states, spend either 13 or 17 years underground before coming out as adults in mass, synchronized emergences, while annual cicadas, which live all over north america and other parts of the world only spend a few years underground before appearing above ground in smaller, non. Cicadas count years, likely using the flow of tree sap.