Cicada Penn State's College of Agriculture Science http://ento.psu.edu/extension/factsheets/periodical-cicada http://ento.psu.edu/extension/factsheets/periodical-cicada Periodical Cicada - Magicicada septendecim (Linnaeus) http://ento.psu.edu/extension/factsheets/periodical-cicada http://ento.psu.edu/extension/factsheets/periodical-cicada periodical cicada http://ento.psu.edu/extension/factsheets/periodical-cicada Penn State's College of Agriculture Science http://ento.psu.edu/extension/factsheets/periodical-cicada Periodical cicadas Cicada http://ento.psu.edu/extension/factsheets/periodical-cicada http://ento.psu.edu/extension/factsheets/periodical-cicada http://ento.psu.edu/extension/factsheets/periodical-cicada http://ento.psu.edu/extension/factsheets/periodical-cicada http://ento.psu.edu/extension/factsheets/periodical-cicada Penn State University Penn State University Penn State University Penn State University periodical cicada periodical cicada periodical cicada Periodical Cicada - Magicicada septendecim (Linnaeus) Periodical cicada http://ento.psu.edu/extension/factsheets/periodical-cicada http://ento.psu.edu/extension/factsheets/periodical-cicada http://ento.psu.edu/extension/factsheets/periodical-cicada Penn State University http://ento.psu.edu/extension/factsheets/periodical-cicada periodical cicadas http://ento.psu.edu/extension/factsheets/periodical-cicada http://ento.psu.edu/extension/factsheets/periodical-cicada kabócák