With December coming, even in the south I feel that the weather is getting colder. However, cold to cold, I have always felt that there is still a great benefit in winter, that is, in winter, mosquitoes and cockroaches have disappeared.
I've always had this in mind for winter until the other day when I came across a mosquito from Siberia.
Yes, when the outdoor temperature is already below zero, and the indoor temperature is only 4 ° C, this mosquito can still hover strongly above my head, and its inspirational spirit really makes people want to slap it to death. Cough, just kidding, but when I saw this mosquito, I really missed my spider.
Don't get me wrong, I don't own spiders, they just live in my house. Of course, not only my family, these spiders also live in your homes.
They sometimes appear in the kitchen, sometimes in the toilet, sometimes only in a dark corner of the balcony, each time it will cause the girl to scream and the boy to cry... Oh, no, if it is a young boy, it is estimated that he directly picked up the slippers and directly shot him to death.
I believe that this is definitely the reaction of most people, rats, cockroaches, spiders seem to be a problem for every family, but you know what? Rats and cockroaches are indeed a big problem in the family, but these spiders not only do us no harm, but also help us guard the home.
That is to say, these spiders are good spiders, but they often become the ghosts under our slippers, and even many of us don't even know what their names are.
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Next, I will introduce you to two kinds of spiders that have been misunderstood by us for a long time, so as to restore their innocence.
1. White-fronted tall-footed spider
The white-fronted tall spider is one of the most common spiders in our home, it is also known as the white-fronted cancer spider, hunting cancer spider.
1. Characteristics
The white-fronted tall spider has two very significant characteristics, the first feature is large, and the second feature is its white pattern.
So big means that the body size is large, the body length of the white-fronted tall spider is about 2 cm to 3 cm, if you count its 8 pairs of long legs, its total length can reach 10 cm to 13 cm, about the size of a CD.
The white pattern refers to a white longitudinal band in front of and behind the head and chest of the white-fronted tall spider, and the white longitudinal band in front of it seems to grow on the "forehead" because of its position, so the white forehead of the tall spider is also named.
Another thing that can also help us identify the white-fronted tall spider is that the male white-fronted tall spider has a V-shaped deep spot on the back of the cephalothorax, which looks like a skull when you look closely.
2. Living environment
The white-fronted tall-legged spider is a heat-loving and humid-loving organism that is widely distributed in tropical and subtropical regions of the world, and is most common in China's southeast coast and liangguang region.
Because the human home environment can play a warm effect, the humidity is also more suitable, so the white-fronted tall spider often settles in human homes. If you go to the toilet and see a big spider slipping past you, it is estimated that this is a white-fronted tall spider.
3. Myths
Many people see or even hear about spiders and immediately want to ask whether it is poisonous. Therefore, when people see the white-fronted tall spider, they often feel that this is a poisonous spider, the timid retreat, and the bold are directly destroyed.
Admittedly, there are many species of highly venomous spiders in this world, but the white-fronted tall-footed spider is not in this category. Although the poisonous fangs of the white-fronted high-footed spider have a certain degree of toxicity, this toxic dose is extremely low, almost only for small animals, and completely unpredictative to humans.
So in terms of toxicity alone, we humans have no need to be afraid of white-fronted high-legged spiders.
Second, the family corner spider
Although the domestic spider is less abundant than the white-fronted tall spider, it is also a spider that we can often see. Listening to the name, we know that this spider likes to live in the corner of the room, and every time it appears, it makes people scream.
One of the best features of the spider is its large long legs, which can reach twice the length of its body, and its legs are covered with hairs. Because of its long legs, the spider runs very fast, reaching a maximum of 0.53 meters per second.
A more prominent feature of the spider is their web. The family spider belongs to the genus of funnel spiders, and the name of the funnel spider is derived from their webs.
The core part of the web of the family spider is a slender funnel-shaped silk tube, and on the outside of the silk pipe, there are many spider silks connected horizontally and vertically, which is to be fixed with the surrounding objects, and the family spider often stays at the bottom of the funnel to wait for the rabbit.
If you see a similar cobweb at home, you should be able to guess who its owner is.
2. Habits
The habits of the domestic spider are relatively less critical, and they are widely distributed in asia, africa and Europe. They love human buildings even more than white-fronted tall spiders and are regular visitors to our homes.
Like the white-fronted tall spider, the domestic spider is often considered a venomous spider. There have even been many reports that many people have been bitten by a spider, resulting in severe necrosis of the wound.
But in fact, this kind of report is nonsense, although the spider has long legs, but the body is very small, so their mouth organs are also quite small. The poisonous fangs of the spider could not penetrate the human skin at all, let alone poison the human being.
Third, their role
As I said earlier, these spiders not only do not harm us, but are also the guardians of our homes, because they help us resist the invasion of other pests.
In the case of white-fronted tall-footed spiders, their favorite food is cockroaches, especially cockroaches in the south, because the portion is sufficient. They eat a particularly large amount of food, a meal can catch several cockroaches, in addition to cockroaches, they occasionally eat flies and mosquitoes, and even related images show that white-fronted high-legged spiders will prey on mice.
What's more, white-fronted tall-legged spiders don't form webs, so when the pests in the home are eaten, they leave automatically. This spirit of doing good deeds without leaving a name can be called the living thunder front of the spider world.
Because the spiders can form webs, they can help humans catch a large number of flies and mosquitoes, which can be called a walking repellent. According to some data, if there are several domestic spiders living in an environment, the number of mosquitoes will drop by 40 to 50% within a week.
These spiders are usually completely harmless to humans, and even help a lot, but once they go out for a walk, they are often shot to death by the slippers that fall from the sky, which makes people think that they can't help but be a little related.
Of course, I know that many people's fear of spiders is difficult to eradicate, and I will not force everyone to see such spiders in the future not to do anything, but I just hope to do some science for everyone, after all, the protection of living creatures not only pay attention to those cute creatures, but also cherish these scary on the outside but gentle on the inside.
References:[1] ZHU Yaoyi. Spider Naturalism. Taipei: Dashu Culture Publishing House. 2003: 318. ISBN 957-879-270-0
Institute of Zoology, Chinese Academy of Sciences. Hunting Cancer Spiders. Database of Animal Species In China. Institute of Microbiology, Chinese Academy of Sciences. [2009-04-28].
[3] Jr., G. B. Edwards,. Pantropical Huntsman Spider, Heteropoda venatoria (Linnaeus) (Arachnida: Araneae: Sparassidae). edis.ifas.ufl.edu. 2018-04-26 [2018-09-12]
Liang Haiyong. Construction and identification of toxic proteins of white-fronted high-legged spider venom glands[D].Hunan Agricultural University, 2013.
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