Cicadas are coming

Millions of cicadas are expected to buzz their way into communities around the eastern-middle part of the United States this year as an unusual event of two types of cicadas emerging in the same year is about to occur. This area will be on the fringe of one of the species about to come up from above ground. Warning, it may appear apocalyptic with the number of bugs flying about, but this is normal for these broods to come up, and relatively safe to the public. The two of the broods together will not happen for another 2021 years.

In a release from the U.S Forest Service, they note that “Seemingly straight out of a sci-fi movie, the Mid-Atlantic region is experiencing a unique natural phenomenon: Billions of periodical cicadas are starting to emerge across 15 states, including the Baltimore- Washington metro area. So-called Brood X, the largest of 12 periodical cicada broods, is creating quite a buzz in a region home to more than 9 million people.

“As the periodical cicadas take flight in awesome numbers; rumors and misunderstandings fly around along with them. Residents fear for their vegetable gardens, their yard trees, and their favorite parks and forests. For some, the insects are even evoking imagery of a biblical plague.

“People really shouldn’t worry. Cicadas are not defoliating insects and have nothing to do with locusts,” said Sandy Liebhold, research entomologist with the Forest Service’s Northern Research Station in Morgantown, West Virginia. “They won’t eat your plants, vegetables, or even the leaves of trees. They are emerging only to mate and lay eggs.”

“Even people familiar with annual cicadas are likely unaccustomed to their periodical relatives. Thousands of cicada species are commonplace across the temperate world. For residents of far flung cities such as Seoul, Rome, and New York City, their annual cacophony is a reminder of the dog days of summer.

“Periodical cicadas, however, are unique to an area that spans from Texas to Massachusetts.

“There is nothing quite like the periodical cicada in existence anywhere else in the world,” said Liebhold. “Most cicadas, in fact most insect species, complete a lifecycle in one year or less. Not so with periodical cicadas. A single generation lives for more than a decade underground and comes up every 13 or 17 years in extraordinary abundance.”

“Periodical cicadas are emerging from the ground and descending on an area that includes 15 states and a metro area home to 9 million people. To attract mates, male cicadas sing a clicking and popping song that can reach up to 100 decibels.

“Scientists have studied periodical cicadas for more than two centuries. Benjamin Banneker, a free African American surveyor and naturalist from Maryland with little or no formal education, accurately predicted the emergence of various broods in the late 1700s. By 1900, USDA entomologist Charles Marlatt mapped the boundaries of different periodical cicada broods, a system that entomologists use today to predict where the insects will emerge. “As for their effect on trees and forests, USDA scientists today are investigating cicada behavior both above and below ground.”

“Before they emerge, juvenile cicadas feed by sucking water and nutrients from tree roots,” said Liebhold. “Once they emerge, they tend to aggregate on trees grown in open spaces. The females lay their eggs by cutting slits in the green shoots of tree limbs.

Neither of these behaviors is known to significantly harm trees. With one notable exception: very young trees can be overwhelmed by too many females cutting slits to lay eggs.”

“One way to protect your recently planted saplings is to secure a fine mesh netting around the canopy for a few weeks. Coping with the sheer abundance of the periodical cicadas is another question and depends on who you ask.”

“In North America, we are blessed with these very interesting and unique species. We are very lucky to have them, and I hope people enjoy this amazing natural phenomenon,” said Liebhold.

Brood XIX is scheduled to be on the edge of our County in 2024 around May. The 13-year cycle Great Southern Brood XIX is expected to emerge at the same time as the adjacent 17-year Northern Illinois Brood XIII. This will be the first dual emergence of the two broods since 1803, not to be repeated for another 221 years.

Dr. Frank A. Hale, of the University of Tennessee’s Extension office, said that even though they are relatively harmless to trees and animals they make a great snack for snakes and various animals.”

“Copperheads, in particular, seek out cicadas when they are plentiful. According to Dr. Hale, some larger species also enjoy snacking on cicadas.”

Dr. Hale went on to say that “Humans, too, have been known to eat cicadas, and those who have tend to say they taste like shrimp. The Food and Drug Administration, however, has warned that cicadas, which share “a family relation to shrimp and lobster,” should not be consumed by anyone allergic to shellfish.”