The size of a CD disk costs 5 yuan each. Is the white-fronted tall-legged spider, the "cockroach-killing artifact", an alien species?

The old house where I lived was next door to an old couple who sold roasted pork. The couple would cook two sets of pig meat in a big pot every morning and bring them to the market before lunch. It can be sold out before dinner. As a small business for a couple, it is still good. However, because pigs are boiled in the water all year round, there are a lot of cockroaches in the whole building. One or two crawl out from time to time on the bed and floor. There are children at home. Worried that cockroaches are harmful to children, I searched online for “cockroach-killing tools” and found the white-fronted tall-legged spider, a natural enemy of cockroaches.

The white-fronted stilt spider is a large indoor spider belonging to the genus Slothidae of the family Slothidae. It is relatively large in size. An adult stilt spider can grow to 2-3cm in length, including its feet. It is 10-13cm in size and is the same size as a CD. Because there is a white horizontal stripe on its forehead, it is called the white-fronted tall-legged spider.

Currently, white-fronted tall spiders are sold on various online platforms. The price is not expensive, and the selling price ranges from one or two yuan to thirty or forty yuan from small to large. Merchants also The slogans were buy two get one free and buy three get two free.

The tall-footed spider is a nocturnal animal and likes to hang out in slightly dark places. Although the tall-legged spider is poisonous, its toxicity is useless to humans. In addition, the tall-legged spider is timid. It will hide far away from people. Even if a person accidentally breaks into its territory and is bitten by it, it will be like being bitten by a mosquito, and there will not be a strong reaction.

However, because of its huge size, some people are worried that it is an alien species and that it is sold freely on e-commerce platforms, which will lead to the proliferation of this kind of spider. After all, many people have seen spiders as big as CD disks. Spiders are still scared from the bottom of their hearts.

Recently, the Ministry of Agriculture and Rural Affairs, together with multiple departments, jointly issued the "Measures for the Management of Invasive Alien Species", which requires that no unit or individual shall introduce, release, or discard alien species without authorization, and will regulate introduction management and strengthen port management. Prevention and control and strengthening of domestic quarantine and other measures to prevent the spread of invasive alien species.

And strengthen the detection and early warning of invasive alien species through measures such as conducting surveys and monitoring, issuing early warning forecasts, and standardizing information release.

It can be seen that the country has attached great importance to the issue of invasive alien species.

Are super-large spiders like the White-fronted Tall Spider not an alien species? Of course not. There are three subspecies of white-fronted tall-legged spiders in the world, namely the medium-hunting crab spider, the sun-hunting crab spider and the spotted hunting crab spider. The first one is mainly distributed in the middle and lower reaches of the Yangtze River in my country. , the third type is mainly distributed in Guangzhou and other places in my country. It can be said that the white-fronted tall-legged spider is an authentic domestic spider.

The main reason for the large number of sales on the Internet is that the tall spider has a particularly domineering title of "natural enemy of cockroaches" and has been dubbed the "cockroach-killing artifact" by the website. Cockroaches are indeed the main predator of the white-fronted tall spider. As one of its foods, in addition to eating cockroaches, it also eats flies, moths and other insects. It is active both indoors and outdoors. During the day, tall spiders mostly hide in roofs, cabinet gaps and other places, and only come out to hunt for food at night. cockroach.

The white-fronted spider has a large appetite and can catch multiple cockroaches in a row, making it fully worthy of the title of natural enemy of cockroaches.

So some businesses are hyping up the idea that white-fronted tall-legged spiders can be used to eliminate cockroaches in the home.

But in fact, it is no problem to let the white-fronted tall-legged spider catch cockroaches. If you want to rely on one or two spiders to kill all the cockroaches in your home, then you are too optimistic about tall-legged spiders or small spiders. Look at the cockroaches.

First of all, cockroaches are social insects that appear in groups. One cockroach or white-fronted tall-footed spider can easily deal with it, two or three can deal with it, or there can be more than a dozen or even dozens of them together. What about when? With the courage of a white-fronted tall-legged spider, I'm afraid it would just try to hide.

Secondly, the white-fronted tall-legged spider mainly eats adult cockroaches and is not very interested in small cockroaches. Cockroaches reproduce and grow very fast. The tall-legged spider can only reduce the number of cockroaches in the home. The number makes it almost impossible to cure them.

What's more, the white-fronted tall spider is alive and its nature is to look for places with a lot of food. If the number of cockroaches in the home is reduced, they will find ways to go to other places with a lot of food and leave. your home.

Finally, although the toxicity of the white-fronted tall-legged spider is negligible to humans, how many people can accept a spider as big as an adult’s hand lying on the wall at home all the time? There is always a risk of being bitten.

What's more, the white-fronted tall-legged spider lives in the middle and lower reaches of the Yangtze River and cannot adapt to the northern climate. It will die soon after you buy it home.

There is no harm if there is no buying and selling. It is understood that the white-fronted tall spiders sold in most outlets are not farmed, but caught in the wild. This kind of destruction of wild animal resources is not something we advocate. .

So if you want to control cockroaches, it is recommended to take other measures instead of using white-fronted spiders.

For example, professionals recommend boric acid mashed potatoes. Boil the potatoes and mash them into mashed potatoes. Then add the same amount of boric acid according to the amount of mashed potatoes, and then add an appropriate amount of sugar. Cockroaches eat the boric acid-added mashed potatoes. Mashed potatoes will dehydrate to death. This not only prevents the development of drug resistance in cockroaches, but is also relatively safe, and children at home are not afraid of accidentally eating them.