1, mosquitoes: mosquitoes with their own anti-virus organs, can not pass the bite to infect the virus, blood-sucking female mosquitoes are dengue fever, malaria, yellow fever, filariasis, Japanese encephalitis and other pathogens of the intermediate host. Mosquitoes are one of the four pests; their average lifespan is not long, with males ranging from 3 to 10 days and females as 10 to 20 days. The world's deadliest animal ranks No.1 mosquitoes, killing more than 725,000 people each year.
2. Cockroaches: Cockroaches can still be artificially infected with bacteria that cause diseases such as Asian cholera, pneumonia, diphtheria, epistaxis, anthrax and tuberculosis. Cockroaches can carry a variety of worm eggs such as roundworms, duodenal hookworms, beef tapeworms, circumferential worms, whipworms, etc. They can also serve as intermediate hosts for a variety of nematodes such as Rosary echinacea, Taenia brachycephalus, and tubers. Occasionally, there are accidents caused by cockroach infestations that lead to malfunctions of communication equipment and computers. Some people abroad call cockroaches "computer pests".
3, flies: flies because of the transmission of a variety of pathogenic microorganisms and endanger human beings, the body surface of the fly is hairy, the foot grasp pad can secrete mucus, like to crawl in the human or animal feces, phlegm, vomit and corpses and other places to crawl for food, it is easy to attach a large number of pathogens.
4, fleas: for allergic people, fleas may lead to the occurrence of some skin diseases after biting, especially in the summer, there are cats and dogs and other pets at home, if the pet is not clean, it will breed fleas and other parasites, and it is easy to cause seasonal eczema after biting the human body. Y. fleas is a very small type of bacillus that causes plague. The fungus is transmitted to humans through fleas (rat fleas) in mice.
5, body lice: body lice is a kind of lice disease, mainly on the human body, parasitized in the hair follicles, by sucking blood for a living!
6. Pubic lice: Pubic lice is a kind of lice disease, which is a contact infectious parasitic disease that is caused by pubic lice biting near the skin of the human pubic hair and body hair around the anus, and causing itching. It is usually transmitted by sexual contact, often in couples, and is more common in women.
7, head lice: head lice is a gray wingless small insect, head lice most often occur in children, especially girls, in school may cause epidemics, so can not be ignored. Infection occurs by contact with the patient's head, comb, hairpin, hat, headscarf, etc. The scalp will itch. The school child involuntarily scratches the itch, and then the head skin is broken and the bacteria are infected, causing complications of lymphadenitis. Adult lice will suck human blood, which in turn can easily affect the learning and mental restlessness of school children.
8, aphids: aphids, also known as greasy insects, honey worms, is a type of plant-eating insects. Aphids are also one of the most destructive pests on the planet. About 250 of these are pests that are seriously harmful to agroforestry and horticulture. Plants infested with aphids have a variety of different symptoms, such as decreased growth rate, leaf spots, yellowing, stunting, leaf curl, decreased yield, wilting, and death. The intake of sap by aphids leads to a lack of vitality of plants, and the saliva of aphids is also toxic to plants.
9, locusts: locusts are locusts, orthoptera insects. Commonly known as "grasshoppers", there are many species, and there are more than 10,000 species in the world. It is found in tropical, temperate grasslands and desert regions around the world. The mouthparts are hard, the forewings are narrow and tough, covered on the hindwings, the hindwings are thin and suitable for flight, and the hind limbs are well developed and good at jumping. It mainly harms grasses and is an agricultural pest.
10, mesozoan: most species of insects are equipped with waxy secretions, shaped like a shell, mesozoan is also named. Mesophyllum is the most common pest on flower and fruit trees, often clustered on branches, leaves, and fruits, sucking plant sap to survive, and in severe cases, it can cause branches to wither or the whole plant to die. In addition, the secretions of mesozoans can also induce coal pollution disease, which is extremely harmful.