Chimneys & Emergence Holes


	Great Lakes Cicada Page \| home Introducing the Cicada \| Life Cycle \| 1999 Brood V Account \| My Journeys \| Magicicada Galleries \| Magicicada Gallery 2 \| Magicicada Nymphs \| Chimneys & Emergence Holes \| Magicicada Emergence \| Magicicada Emergence 2 \| Magicicadas Feeding \| Magicicada Mating \| Magicicada Ovipositing \| Eggs & Egg Damage \| Cicada Mortality \| Brood Maps \| Tibicen Galleries \| Tibicen Gallery 2 \| Tibicen Nymphs \| Tibicen Emergence \| Tibicen Emergence 2 \| Tibicen Feeding & Ovipositing \| Okanagana Galleries \| Field Guide \| How to Find \| Deterrence \| Armed Robbery??? \| My Story \| About Me \| Cicada Links \| The Future Chimneys & Emergence Holes Magicicada Emergence Holes When the Magicicada invasion begins, the nymphs leave their underground borrows to begin their adult life. This occurs when the soil temperature reaches approximately 64 degrees Fahrenheit. The emergence holes decorate the ground underneath the forest canopy. Photo taken: 06/99 Brecksville Reservation Cuyahoga County, Ohio Cicada Chimney/Hut Weeks prior to the mass emergence, Magicicada nymphs will sometimes construct mud chimneys to help evade ground moisture. These chimneys are hollow in the center which is where the nymphs temporarily reside. Photo taken: 05/99 Findley State Park Lorain County, Ohio Cicada Chimney/Hut Chimneys usually appear after a rain shower which can water log a nymph's underground borrow. Majority of the nymphs remain an inch or so below the ground surface, prior to emerging. Photo taken: 05/99 Findley State Park Lorain County, Ohio Cicada Chimney/Hut These mud fortresses usually are three to six inches in height. This particular chimney was a whooping eight inches tall! Photo taken: 05/99 Findley State Park Lorain County, Ohio