“About 35 million Americans will have the opportunity to interact with Brood X,” Kritsky said, noting that they will likely be spotted in Philadelphia Washington, DC Baltimore Cincinnati and Indianapolis. What sets Brood X apart from other cicada emergences, however, is proximity to large metropolitan areas. When it comes to such reproduction strategies, this year’s cicadas have a lot in common with other broods. The great numbers of cicadas during this event can be a nuisance to farmers, but the insects aren't harmful to humans or animals. The true, large-scale emergence might happen in the first or second week of May, depending on location. Cicadas, which are not harmful to humans or animals, begin to emerge when the soil reaches 64 degrees Fahrenheit, Day said.Ī few individuals will probably come out in mid-to-late April, Day said, stragglers that the entomologist nicknames “lonesome Bobs,” who call and call to no avail. That show doesn’t kick off until the ground warms up. When and where will the cicadas emerge this year? “It’s just going to be an amazingly big, big show.” Periodical cicadas only occur in the eastern United States they don’t occur anywhere else in the world,” he said. This is an unusual biological phenomenon. While cicadas can be a nuisance for some orchardists and farmers, witnessing them is also an awe-inspiring experience, Day said. The large-scale event happens every 17 years. Cicadas are expected to emerge from underground across the eastern US.
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