The giant spider introduced today is the natural enemy of the home cockroach -
White-fronted tall spider
Commonly known as the tall-footed spider, it is an animal of the family Crab spider family. Distributed around the world, the species's model origin is in Europe. It is a large indoor spider that does not have a web.
The white-fronted tall spider is a large spider with a body length of about 2-3 cm and a full length (including feet) of about 10-13 cm, which is about the size of a CD disc when the feet are open.
The body color is mostly light gray, light yellow, dark brown, and the color will vary depending on the distribution area.
There is a yellow-white transverse band on the anterior and posterior margins of the cephalothorax (this feature is more pronounced when observed in females).
Males have distinct features: a dark "V" pattern on the back.
male
female
Female versus male
Female white-fronted tall-legged spiders are close-up on the back and ventral surface
Ratio to human hand
Ratio of male white-fronted tall-legged spiders to human hands
White-fronted tall spiders like to sneak into homes, farmhouses,
I usually like to hide in the roof, cabinet crevices, etc.
It is mainly found in the southeast coastal areas of China.
It is a nocturnal animal that hides in the crevices or ceilings of cabinets during the day and forages for food at night.
White-fronted tall spiders are fairly instilbene spiders that do not cause serious harm even if bitten. It mainly feeds on cockroaches, flies, moths and other insects. It eats a large amount of food and can prey on several cockroaches in a row.
Allowing the white-fronted tall-legged spiders in the home to survive can achieve the effect of natural cockroach killing.
However, white-fronted tall-legged spiders are difficult to raise artificially, and when cockroaches and flies disappear at home, white-fronted tall-legged spiders will naturally leave in order to forage for food.
The eggs of the white-fronted tall spider are disc-shaped, and the female spider has the behavior of egg protection, and after mating and laying eggs, in order to protect the eggs, the eggs will be fixed to the abdomen with silk.
Folklore has it that contact with the urine of white-fronted tall spiders may cause the skin (especially the corners of the mouth) to ulcerate, and it is mostly regarded as a pest and avoided by everyone.
Today's research has found that the ulceration of the corners of the mouth is caused by the infectious herpes type I virus, which is not related to the white-fronted tall spider, and according to biology, spiders do not urinate, and legend has it that the skin ulcerates is actually the body fluids of cryptoptera. When the worm crawls on the person's body, the person will be scratched with bare hands, then the body fluids in the worm's body will flow out due to the rupture of the body, causing allergies.
As shown in the legend: Brown poisonous cryptoptera
Paederus littorarius
Cryptoptera do not sting, but their body fluids with cryptoptera will cause irritation to the skin, once exposed to 10 to 15 seconds will cause an inflammatory reaction, patients will feel burning pain, skin blistering and ulceration, is for "Cryptoptera dermatitis". The general saying is that as long as it is not broken, it will not pose a threat to people, but in fact, as long as it accidentally touches its body, it will spew out body fluids at the right time, causing inflammation, blistering and ulceration on your skin, and it is painful when the wound is not yet compounded. However, it generally does not fester to the real leather, so it does not leave scars.
In fact, the white-fronted tall spider does not have the toxicity that affects humans, and the habit is timid, in addition to being chased by humans, even as long as some noise and wind blowing will quickly flee.
However, if you grasp it directly by hand, you may be bitten by a white-fronted tall spider based on defense, and as a result, the wound may become infected with bacteria and become inflamed and suppurative.