"When summer comes, residents love to cool off under the trees on the street, but the trees are densely packed with white bugs and keep falling to the ground." Recently, many citizens have reported that many small insects have grown on the trees on the sidewalks of Donghuamen Street, Donghuazheng Street and Guangdu Avenue, and serious ones have even fallen on the road.
Is the tree sick? Are these bugs harmful to the human body? Experts from chengdu garden plant pest early warning and control center said that these insects are aphids, affected by the low temperature last winter and the rain this spring, this year's aphid outbreak is delayed by about half a month than in previous years, and it is expected to reach the peak of the outbreak in mid-to-late June, reminding the public to pay attention to protection.
Roadside trees map network
So many worms! Falling on the body will also make the bulge itch
It seems that overnight, many streets in Chengdu have appeared bug "special team", these small bugs fall on people, but also bulge, itchy.
On the afternoon of the 10th, the reporter came to Donghuamen Street, walked all the way to Renmin East Road, and found that there were indeed many bugs on the trees on both sides of the sidewalk, which were milky white, had wings, and kept crawling around. They also have a good "camouflage", because the volume is very small, and the color is similar to the color of Yang Shu, if you do not look closely, it is difficult to find their traces.
Mr. Liu, a nearby resident, said: "Recently, there have been a lot of bugs on the trees here, always falling under the trees, and the fitness equipment on the side of the road is often full of such bugs, and we dare not exercise here!" ”
At the intersection of Donghuamen Street and Donghuazheng Street, luo Dajie, a sanitation worker, told reporters that the trees on this street have such insects, "After the insects are born, the leaves are easy to fall." You see, I just swept it, and now there are a lot of leaves. Sister Luo also said that the leaves of raw insects will have a kind of mucus, which is very difficult to sweep, and the insects will fall on bare parts such as the neck, and there will be redness and itching.
What worms? Aphids postponed a half-month concentrated outbreak
Where do these bugs come from? Is it harmful to the human body?
After careful identification by Liu Jun, engineer of Chengdu Garden Plant Pest Early Warning and Control Center, it was confirmed that these small insects were aphids and whiteflies.
"An aphid is harmless to human health, but it has villi on its body and may be irritating, so it will feel uncomfortable when exposed to it." Liu Jun said that the appearance of aphids in the main urban area of Chengdu after entering May is relatively abnormal, because under normal circumstances, aphids appear in April, but after the beginning of spring this year, there is more rain, coupled with the low temperature last winter, so the aphids have been delayed for more than half a month.
Experts remind that although aphids will not harm human health, they still have a certain irritation to the human body, especially for cyclists, and pay attention to wearing masks and glasses during the concentrated outbreak period of the next month or so. In addition, aphids have phototropism, headlights and brightly colored clothes are easy to attract aphids, citizens go out as far as possible not to wear light yellow and other light-colored clothes, with glasses to protect the eyes, insecticides, mosquito coils, flower dew can also kill aphids to a certain extent.
Wake up! Play in the wetlands and beware of the centipede
In addition to aphids, according to Liu Jun's observations, there are also multipod insect pests such as Malu and Centipede in Xiangcheng Wetland and Egret Bay Wetland, which appear earlier than in previous years and have a large number.
Egret Bay Wetland Park Map Network
"Many citizens like to go to the wetland for leisure during the holidays, and they need to be vigilant against these multi-legged insects, and once they are in direct contact, they will have allergic symptoms such as itchy skin, redness and swelling." Liu Jun told reporters that if you are bitten by multipod insects, you should rinse with water first, if necessary, you can rub a little cool oil, and if necessary, you can go to the hospital in time.
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In May, these 5 species of insects are the most common in Chengdu
Chengdu has many kinds of plants, with the rise of temperature, many overwintering pests began to enter the peak period, this month, what are the most common insects in Chengdu? How should citizens protect themselves? According to reports, the most common insects in Chengdu in recent times are bugs, mites, mealybugs, wood lice and aphids.
Bugs: including hibiscus stilt bugs, sycamore square winged net bugs, etc., which are parasitic in hibiscus, phylloscopus, rhododendron and other plants;
Mites: parasitic in Metasequoia, citrus, osmanthus and other plants;
Mealybug: parasitic in hibiscus magnolia, Privet, camphor, tianzhu gui, clover and other plants;
Pyllids: Mainly found in bronze, bark trees, heather, especially in bronze trees this month will appear more psyllids.
Aphids: Parasitize plants such as begonias, moonflowers, peaches, roses, bamboos, hibiscus and other plants, and the public can judge whether there are aphids by observing whether there is honeydew secreted by aphids under the street trees.
Generally speaking, these pests are not harmful to the human body, and the public can also kill them to a certain extent with insecticides, mosquito coils, and flower lotion.
Chengdu Business Daily client reporter Li Yanqin Editor: Liu Yanmei