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Cicadas: Millions appear after 17 years underground



As many as 1.5 million cicadas per acre can appear, and people living in Southwest Virginia, parts of North Carolina and West Virginia can witness this unique phenomenon, Virginia Tech said in a news release.

Fortunately, cicadas are not harmful to humans. Usually, the noise they make can be a boon.

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“Communities and farms with large numbers of cicadas emerging at once can have a major noise issue,” said Eric Day, Virginia Cooperative Extension entomologist in the Virginia Tech Department of Entomology.

“Hopefully, any annoyance at the excitement is simply offset by how often – and amazingly – this event is.”

However, they are a danger to orchids, vines and trees because of its female egg laying habits.

“Cicadas can occur in large numbers and growers in predicted areas of activity should be cautious,” said Doug Pfeiffer, a professor and extension specialist at Virginia Tech’s Department of Entomology.

The cicadas are large, cleared of insects with insects that occur either yearly or seasonally. It is a mystery why seasonal cicadas only appear every 13 or 17 years, but are prohibited from avoiding syncing of predator cycles.


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