What are the harmful insects?

Insects are the largest number of animal groups on the earth, accounting for more than 50% of all biological species. There are more than 1 million species of insects known to humans, but there are still many species to be discovered. Traces are almost everywhere in the world, but many insects are harmful to humans. Let's take a look at what common harmful insects are!

locusts

Locust is an important part of agriculture, forestry and animal husbandry ecosystem. Many harmful locust species can cause different degrees of harm to agriculture, forestry and animal husbandry. There are more than 10,000 species of locusts in the world, among which about 300 species can cause harm to agriculture, forestry and animal husbandry. Locust can occur in the world except Antarctica and the north latitude of Eurasia. The area of locusts occurring all year round reaches 46.8 million square kilometers. An eighth of the world's population is regularly plagued by locust plagues.

termites

Termites belong to arthropod insects and other orders, similar to ant camp social life, social system in the classification status belongs to the lower semi-metamorphosis insects, ants belong to the higher level of the whole metamorphosis insects, is a very harmful insects, will eat artificial fibers, plastics, wires, cables and even bricks, stones, metals and so on.

mosquitoes

Mosquito belongs to insect class diptera mosquito family insect,. Females usually feed on blood, while males suck plant sap, one of the four pests, the main harm is the transmission of disease. According to research, mosquitoes transmit more than 80 diseases, and no insect on earth is more harmful to humans than mosquitoes.

flies

Flies harm human beings because they carry a variety of pathogenic microorganisms. They like to crawl and feed in human or animal feces, sputum, vomit and corpses. They are very easy to attach a large number of pathogens, such as Vibrio cholerae, typhoid bacilli, dysentery bacilli, hepatitis bacilli, poliomyelitis bacteria, hepatitis A bacteria, hepatitis B bacteria and ascaris eggs. They often stay on human bodies, food and tableware. When they stop, they have the habit of rubbing their feet and brushing their bodies. Pathogens attached to it quickly contaminate food and tableware.

mole cricket

Gryllocricket is a polyphagous pest that likes to eat all kinds of vegetables. It is especially harmful to vegetable seedbeds and transplanted vegetable seedlings. Adults and nymph bite the seeds and sprouts just sown in the soil, or bite off the roots and stems of seedlings, so that seedlings die, and the affected roots are messy. The mole cricket moves underground, penetrating the topsoil into many tunnels, so that the roots of seedlings are ventilated and separated from the soil, causing seedlings to die due to water loss, lack of seedlings and broken ridges, and even serious destruction of seeds, which greatly reduces vegetable production.

gadfly

Gadfly is very disturbing to domestic animals. According to statistics, milk yield of dairy cattle can be reduced by 11%-15% due to the bite of gadfly, and the highest can reach 19%-25%. In addition to transmitting equine infectious anemia, it can also transmit many other important human and animal diseases, such as the epidemic of zoonosis between cattle and dogs in India, Thailand, Malaysia and Taiwan Province of China. This disease also occurred on camels in northwest China in 1950s, causing great losses. In addition, tabanus can also spread anthrax, which is familiar to everyone, such as hare fever, filariasis, horse waist paralysis, delaise, sleep disease, Nagannak disease, Suaru disease, coitus disease, cerebritis, vesicular animal inflammation, etc., which are widely spread in the world.

cockroaches

Cockroach, also known as cockroach, yellow woman, oil thief, shoe plate worm, oil stove, etc., can carry roundworm eggs, such as roundworm, duodenal hookworm, beef tapeworm, roundworm, trichuris, etc., can also be used as intermediate host of various nematodes such as moniliform echinodes, hymenolepis brevis, tumor tube, etc., and can also carry a variety of protozoa, four of which are pathogenic to humans or animals, such as dysentery amima, intestinal giardia, etc.