Ключевые слова: 13year cicada, 17year cicada, 1846, academy of natural sciences, american ornithologist, anniversary, behavior, biology, cassini periodical cicadas, cassins periodical cicada, cicada cycle, courting behavior, description, discovery, display, dwarf periodical cicada, emergence, endemic, entomology, fly, honour, insects, j c fisher, john cassin, life cycle, magicicada cassini, magicicada tredecassini, males, margaretta morris, mass, natural history, naturalist, north america, observation, ornithology, periodical cicada, phenomenon, philadelphia, population, publication, report, research, scientific name, sing, species, specific name, spectacular display, swarm, synchronize, unison,