"The residential building is full of bugs! Inside and outside the house, the stairway is full. Residents of the Nanta Street Yaoda South Second Lane Community in Shenyang City called the newspaper's news hotline 96009-1 to say: An unknown insect "invaded" the residential community, looking like cockroaches and not very similar, a large number, making everyone feel uneasy.
Elm yellow leaf nails
On July 5, the greening department of Shenhe District gave feedback to reporters: This insect is called "Yuhuang leaf beetle", which is non-toxic and does not bite people. Due to the high temperature and little rain and drought for several days. At present, the streets and sidewalk trees in the whole district have also been choked by this insect scourge, and the centralized spraying and killing operation has been fully launched.
<h1>Investigation: Elm canopy hides insect egg nests</h1>
"What kind of bug is this?" And a stink! "Everywhere it falls, you see, the screens are densely packed!" "It's like a seven-star ladybug, and it's like a cockroach, but it's not!" "Afraid it's going to bite people and threaten health isn't it?" In the Nanta Street Yaoda South Second Lane community, some residents are talking about it. Some residents took the reporter to visit the community, and the reporter found that not only the ground and the building were full of bugs, but also the residents' homes.
Eggs of elm yellow leaf beetles
The reporter took a picture of this insect, only to see that it was larger than a ladybug, about 1 cm long, and looked like a cockroach, but smaller than a cockroach. The top of the head has two tentacles, the abdomen is yellow, and the back looks brown, but in the light it is anti-fluorescent green. Some residents reported that pinching this small bug to death would emit an unpleasant odor.
"I checked, and the base camp of these bugs is in the big elm tree in the community!" A resident led the reporter under the tree. I saw that this old elm tree was more than ten meters high, and many elm leaves were crawling with black and green insects, and here was the egg nest. "On the 4th, the greening department organized personnel to go to the scene to spray the insects to kill, but because the number of insects was too large, both vehicles of drugs were sprayed, but it was not enough, and the next day it was also killed.
Kill operations
<h1> Eradication: Joint action on community greening</h1>
With the residents' questions, the reporter consulted the city's forestry experts. According to the descriptions of residents and photos of the insects, experts say that this is called "elm yellow leaf beetle", which is a pest that specializes in eating elm leaves, and after eating elm leaves, they will look for warm places to wait for breeding. "This bug has little effect on humans and does not threaten physical health." But it is very harmful to elms, and the smell on the body is a self-protecting gas. Experts said.
elm
"We have learned the specific situation, due to the continuous high temperature and little rain and drought in recent days, the insect has been found in the street trees in the district, and the spray killing operation has been implemented!" Yesterday, personnel from the greening department of Shenhe District said in an interview that because of the resistance of this insect, ordinary pesticides cannot kill them. In this regard, the greening experts selected professional disinfectants and filled them with spraying agents according to strict proportions.
On July 5, community personnel reported that all elm trees in the entire community had been sprayed to kill, and professional equipment such as high-pressure water wheels and water guns were used to remove all the eggs in the canopy.
This insect is also called elm green hair firefly, also known as elm green golden light insect, elm blue golden light worm, elm leaf beetle. Two generations a year, adult insects overwinter in the soil, weeds, wall crevices, etc., and begin to be active in the spring of the following year.
The control method is to inject 5% imidacloprid 20 to 30 times the liquid into the trunk, so that the liquid flows with the sap, and after the elm green hair firefly eats the leaves, it will be poisoned and die, or use cypermethrin, methyl vitamin salt and other drugs for radical treatment.
Tang Kuiyang, senior reporter of Shenyang Evening News and Shen Bao Rong Media
Wang Peiting, editor of Shenyang Daily and Shen Bao Rong Media