We report a novel mode of ecdysis failure in periodical cicadas (Magicicada spp. Davis) tied to the cicadas’ reliance on high densities for survival in the face of predation. Under extremely high densities, cicadas can disrupt others undergoing ecdysis by knocking them loose from their perches, trapping them, or causing physical damage. Our observations raise the possibility that while periodical cicadas thrive at high densities, it is possible that some densities are so high that they inhibit success.
Cooley, John R. and Holmes, Greg
"Periodical cicadas (Magicicada spp.): Predator satiation, or too much of a good thing?,"
The Great Lakes Entomologist, vol 56
Available at: https://scholar.valpo.edu/tgle/vol56/iss1/15