US Prepares for a Cicada Invasion Last Seen in 1803
2024-02-26
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1Do you remember all those cicada videos from the United States in 2021?
2Well, prepare for a repeat performance this year.
3The insect show begins as early as April.
4Two groups of cicadas, brood XIII and brood XIX, are expected to come out from the ground to mate and lay eggs this year.
5Their appearance in the same year is rare.
6The last time it happened was 1803.
7Brood XIII is on a 17-year cycle.
8They will be found in the Midwestern states of Illinois, Iowa, Wisconsin and Kentucky.
9Brood XIX is on a 13-year cycle.
10They will come out in an area stretching from Indiana and Illinois southeast to the southern states of Alabama and Georgia.
11Scientists expect more than one trillion cicadas to appear in some small areas where the two broods are close to each other.
12The insects will begin to climb out of the ground when the soil warms to about 18 degrees Celsius.
13So they will be seen in warmer southern areas as early as April.
14It will be closer to summer, sometime in June, before the cicadas arise to the north in Wisconsin, Indiana and other Midwestern states.
15Cicadas are large, noisy insects, from about 2.5 to 5 centimeters long.
16Like most insects, they have wings.
17They also have big "bulging" eyes. There are thousands of species of cicada around the world.
18The huge majority of cicada species arise each year, or annually.
19Then there are the periodicals which arrive after numerous years in the ground.
20The periodical cicadas emerge to mate.
21The male cicadas make a thrumming sound with their wings on their bodies to call for mating.
22The "singing" appeals to females.
23The insects mate and leave their fertilized eggs on trees.
24The resulting young fall to the ground after breaking out of their shells.
25They dig down into the ground where they live for years, feeding on the liquid that comes from tree roots.
26Seven of the nine known periodical cicadas live in North America.
27Of the other two groups, one is in India and one is found only on the island country of Fiji.
28Floyd Shockley is an insect scientist, or entomologist, with the Smithsonian Institution's National Museum of Natural History in Washington, D.C.
29He said this year's group of cicadas will include four different Magicada species within the XIX brood.
30The next time brood XIX and brood XIII will come out in the same year will be in 2245.
31I'm Dan Friedell.
1Do you remember all those cicada videos from the United States in 2021? 2Well, prepare for a repeat performance this year. The insect show begins as early as April. 3Two groups of cicadas, brood XIII and brood XIX, are expected to come out from the ground to mate and lay eggs this year. Their appearance in the same year is rare. The last time it happened was 1803. 4Brood XIII is on a 17-year cycle. They will be found in the Midwestern states of Illinois, Iowa, Wisconsin and Kentucky. Brood XIX is on a 13-year cycle. They will come out in an area stretching from Indiana and Illinois southeast to the southern states of Alabama and Georgia. 5Scientists expect more than one trillion cicadas to appear in some small areas where the two broods are close to each other. The insects will begin to climb out of the ground when the soil warms to about 18 degrees Celsius. So they will be seen in warmer southern areas as early as April. It will be closer to summer, sometime in June, before the cicadas arise to the north in Wisconsin, Indiana and other Midwestern states. 6Cicadas are large, noisy insects, from about 2.5 to 5 centimeters long. Like most insects, they have wings. They also have big "bulging" eyes. There are thousands of species of cicada around the world. 7The huge majority of cicada species arise each year, or annually. Then there are the periodicals which arrive after numerous years in the ground. 8The periodical cicadas emerge to mate. 9The male cicadas make a thrumming sound with their wings on their bodies to call for mating. The "singing" appeals to females. The insects mate and leave their fertilized eggs on trees. The resulting young fall to the ground after breaking out of their shells. They dig down into the ground where they live for years, feeding on the liquid that comes from tree roots. 10Seven of the nine known periodical cicadas live in North America. Of the other two groups, one is in India and one is found only on the island country of Fiji. 11Floyd Shockley is an insect scientist, or entomologist, with the Smithsonian Institution's National Museum of Natural History in Washington, D.C. He said this year's group of cicadas will include four different Magicada species within the XIX brood. 12The next time brood XIX and brood XIII will come out in the same year will be in 2245. 13I'm Dan Friedell. 14Dan Friedell adapted this story for Learning English based on a report by Reuters. 15_______________________________________________ 16Words in This Story 17brood -n. a group of young (in this case insects) all born at the same time 18thrum -v. to make a low, steady sound 19species -n. a group of animals or plants that are similar and can produce young animals or plants 20We want to hear from you. Have you seen the cicadas before? What do you remember about them?