At first glance, it really looks like paederus, but the waist color of paederus is not like this. To be on the safe side, you'd better think of it as a paederus. You can't shoot directly with your hands. If human skin is exposed to a large amount of venom (such as venom flowing to the skin), blisters will appear on the injured part and the surrounding skin will be red and swollen. Blisters and redness are closed parts of the original skin color. Blisters can be broken, such as squeezing them with a cotton swab and washing them with salt water, but they will reappear soon. After the blister will disappear naturally soon, the affected area will swell, and the original blister in the middle will sag, like a crater, but generally the crater is round, while the affected area on the skin is linear. The skin tissue of the affected area will all be necrotic, forming a dark brown scar, and new skin will grow under the scar, but the color of the new skin is very light, which is different from the surrounding skin, resulting in the healing of the affected area like a knife wound. Therefore, the scars left have the greatest impact on the skin. Some people think that paederus crawling through the skin will do harm to the skin, because the insect has not been killed and the venom has not yet flowed out. Some people think so, because the needle-like structure at the tail of the worm will contact the skin. Actually, it will, but the consequences will only be slight itching and peeling. After being crawled by paederus, be sure to keep the affected area clean and generally recover automatically. However, in order to speed up recovery, prevent skin infection, or relieve itching and pain, patients should go to the dermatology department of an authoritative hospital for medical treatment immediately. Generally, doctors will prescribe external medicine and apply it to the affected area, and it will be fine in about two weeks. Living environment paederus breeds in wet places, such as freshwater lakes, ditches, ponds, floodplains, weeds, rice, corn and other crop fields. It moves during the day, often crawls on crops or weeds, and runs very fast when it is frightened. Feeding on small insects, plant pollen and decaying organic matter. It has obvious phototaxis (especially for fluorescence), and the stronger the light, the more insects it attracts. It is also highly oriented. Under the same conditions, paederus always likes to fly to high places. It crawls very fast. After flying indoors, crawling around on the ceiling, walls, furniture, clothes and human body is disgusting. The paederus entering the room can endure hunger for several days, which makes the human body constantly damaged. The frequency of nocturnal activity of paederus is influenced by many factors, such as temperature, wind direction and light. Preventive measures 1. Keep indoor and outdoor sanitation, prevent mosquito breeding, and close the screen window. 2. Turn off the lights and sleep, and check whether there are paederus on the bed before going to bed. 3. Try to take various mosquito repellent measures, such as lighting a mosquito killer and wiping toilet water. 4. If the paederus stays on the skin, don't beat it directly with your hands and blow it away with your mouth. 5. When playing in the countryside, take necessary protection and try to wear long-sleeved clothes. 6. Paederus obliquus will die immediately when it meets essential balm, even if it is added with 2~3 drops of essential balm in 500ml water, it will die within one and a half minutes. Treatment: When the body fluid of Spodoptera exigua accidentally touches the skin, because its body fluid is strongly acidic, it should be neutralized with alkaline substances (caustic soda is not allowed). The skin can be treated with toothpaste, soda and soapy water, and then rinsed with clear water. After that, apply acyclovir cream to the wound, usually for about a week. You can also use calamine lotion to treat wounds with good results.