1, Acari Acari belongs to a class of small animals of Arachnida, Arthropoda. Their bodies are generally around 0.5 mm, some as small as 0. 1 mm, and most species are less than 1 mm, which is generally invisible! . Mites and spiders belong to arachnida. Adults have four pairs of feet, a pair of tentacles, no wings and tentacles, and their body structure is different from that of insects. Insects are divided into jaws and bodies. Jaws consist of mouthparts and jaw bases, and bodies are divided into feet and end bodies. Bikang has a lot of hair on his body and feet, some of which are very long. There are mouthparts at the front end, and the eating habits are diverse, such as dandruff.
2. Fleas Fleas belong to completely abnormal fleas. Commonly known as leather, fleas are small, wingless and jumping parasitic insects. Adults usually live in mammals and a few live in birds. Antennas are thick and short. The mouthparts are sharp and used for sucking. The abdomen is wide and has 9 knots. The hind legs are well developed and strong. Pupae are wrapped in cocoons. Adults are tiny or short, wingless, hard and flat, parasitic on mammals and birds, with sucking mouthparts, and both males and females suck blood; The larvae are cylindrical, live freely, have chewing mouthparts, and feed on adult bloody stools or organic matter.
3. There are about 75 species of bedbugs and ticks in ancient China, which are distributed all over the world and feed on the blood of people and warm-blooded animals. Among them, temperate bedbugs suck human blood. Bedbugs have a pair of smelly glands, which can secrete an unusually smelly liquid. This smelly liquid has the functions of defending natural enemies and promoting mating. Bugs leave an unpleasant smell wherever they climb, hence the name bug.
Effects on human health 1, mites
More than 50,000 species of mites have been found in the world, second only to insects. Many kinds are related to medicine. It is found that mites are closely related to human health, such as gamasid mites, chigger mites, scabies mites, demodex mites, acaroid mites, dust mites, cattail mites, etc., which can bite people to suck blood and invade the skin, causing "rosacea" or demodex mites, allergies, urinary acariasis, pulmonary acariasis, intestinal acariasis and scabies, seriously endangering human health.
2. Fleas
Fleas not only endanger the health of animals, but also pose new challenges to the quality and health of people's living environment. Both sexes of fleas have blood-sucking habits. People who are bitten often cause allergic reactions in local tissues, resulting in papules of different sizes. Those with severe reaction feel itchy and can also cause iron deficiency anemia. Fleas are important vectors, which can spread many important infectious diseases, including taeniasis, plague, hemorrhagic fever with renal syndrome, endemic typhus and Bartonella disease.
3. Crazy
Bedbugs suck blood at night, making people unable to sleep. Long-term biting and sucking blood can cause anemia, insomnia and neurasthenia. Moreover, when bedbugs sting people, saliva is injected into the human body, releasing irritating substances that dilate blood vessels, causing petechiae or itchy air masses, which are often arranged in rows, which can cause redness, swelling and pain in parts with high skin sensitivity. In Africa, there are many reports that blood-sucking bedbugs cause anemia, heart disease and colds. Bedbugs have always been suspected of spreading diseases.