Why are mosquitoes black Why are mosquitoes black now, and they are so powerful

Natural selection, survival of the fittest!

The world is so big that there are no surprises.

Species of mosquitoes.

Species of mosquitoes There are about 3,300 species and subspecies in the genus Insecta, and 33 species and subspecies in 15 genera in China. Most of the important vectors of mosquito-borne diseases belong to three genera: Anopheles spp., Culex spp., and Aedes mosquitoes.

There are many types of mosquitoes, but they are generally divided into three categories, one is Anopheles mosquitoes, one is Culex mosquitoes, and the other is Aedes mosquitoes. The first major category is Anopheles mosquito adult mosquitoes are characterized by mostly spotted wings, mostly gray bodies, and the body is at a certain angle with the staying surface when staying, and it is mostly active at night; The second major category is the Culex mosquito The adult of Culex mosquito is characterized by its wings are mostly spotless, its body color is brownish yellow, and the body is often in a balanced state with the staying surface when staying, parallel to the state, and its activities are mostly at night; The third category is Aedes mosquito Aedes adult Aedes mosquito is characterized by no spots on its wings, its body is mostly black, and there are white spots, it likes to be active during the day, so we are often indoors, in a cool place, there are often such mosquitoes during the day, everyone may have the impression that its body is black, with white markings. Worldwide transmission of viruses and malaria of various mosquitoes Culex aegypti mosquitoes Aedes african malaria mosquitoes Culex tropicana mosquitoes Culex tribandus mosquitoes Spotted mosquitoes.

Although there are many types of mosquitoes, there are only three types of Aedes mosquitoes, Culex mosquitoes and Anopheles mosquitoes that are common in people's homes.

1. Culex mosquitoes A genus of the Culex subfamily of the family Culex mosquitoes. Commonly known as Culex mosquitoes. It is widely distributed all over the world and is the second largest genus of the mosquito family, with more than 800 species and subspecies known.

More than 70 species are known in China. The larvae breed in various bodies of water or in containers of stagnant water. They are the most common indoor mosquitoes and are commonly known as house mosquitoes.

2. Aedes albopictus.

Commonly known as the "flower mosquito", it mainly sucks blood during the day, bites people fiercely, spreads dengue fever, and is known as the "Asian tiger mosquito". It breeds in natural stagnant water and small containers, such as jars, cans, cans, flower beds, bamboo tubes, tree holes, lunch boxes, waste tires, bonsai, clogged roof ditches, etc. The spotted mosquito bites and sucks blood at night and during the day.

The spotted mosquito is not only vicious, but also good at flying. Generally, mosquitoes only fly tens to hundreds of meters, and the farthest distance is not more than 1-2 kilometers, but the spotted mosquito can fly 5-7 kilometers, and the speed is extremely fast, and it can also do "difficult actions" such as rolling back and forth, diving, sharp turns, sudden acceleration or deceleration at will.

Aedes aegypti is a typical blood-sucking "house mosquito" that sucks blood during the day and has a similar habit to Aedes albopictus. They like to lay eggs and breed larvae in tanks and other utensils.

3. Anopheles sinensis.

The larvae of Anopheles sinensis breed in large stagnant waters, such as rice paddy fields, swamps, reed ponds, slow-flowing ditches, etc.

Nowadays, the pollution is getting worse and the variety of pests is increasing.

In particular, pests such as mosquitoes and cockroaches are especially abundant in the summer when the weather is hot.

You need to take extra precautions in normal times, after all, they have a lot of parasites.

An insect is considered a pest when it is harmful to humans themselves or their crops and livestock. Even for pests, control measures are not necessary, especially when the cost of control outweighs the cost of harm. When calculating costs, it is necessary to include not only direct costs (such as pesticides, labor costs, etc.), but also the cost of harmful pesticides to the environment and human beings.

Autumn is getting warmer due to global warming, and mosquitoes now wait an average of 9 more than a few decades ago to start hibernating, and as the average temperature in autumn slowly increases, mosquitoes start hibernation later and later.

Mosquitoes generally start in May and reach their peak in mid to late August. Therefore, early autumn and mid-autumn are both active periods for mosquitoes. When the weather is too hot, the vitality of mosquitoes will be weakened.

In addition, under 15, mosquitoes are basically inactive, but it is about 20 autumn, which is the most suitable for mosquito activities, especially in rainy weather.

As the saying goes: Mosquitoes bite harder in autumn than in summer, in order to provide more nutrients to their offspring when laying eggs. After the beginning of autumn, mosquitoes should reserve energy for wintering, mosquitoes below 10, will stop breeding, in order to save life and reproduce, can only rely on crazy blood sucking to store winter nutrients, strong body, more blood-sucking mosquitoes are easier to survive the winter.

Is it black with white spots, the mosquito is called Aedes albopictus, which is an important vector insect in our country, and is known as the Asian tiger mosquito abroad. It has a strong aggressive power against people, on the one hand, it seriously disturbs the normal life of people, and at the same time, it can also spread mosquito-borne infectious diseases such as dengue fever.

Mosquitoes have mutated due to environmental pollution.

It is said that the timber imported by China in a certain year was in the imported timber, so it entered our country.

Mosquitoes with black and white stripes are poisonous mosquitoes, so don't scratch them.

Now it's so polluted that if you get bitten, don't scratch it, wash it with soapy water.

The species of the black and white mosquito Shenji shouting is Aedes albopictus.

Aedes albopictus, commonly known as the flower mosquito, also known as the Asian tiger mosquito, is about 5 mm long, the whole body is black, and the chest, abdomen, and feet are covered with white wide wild spots. It originates from Southeast Asia and is a common mosquito species in Southeast Asia and China, and has spread from its origin Asia to more than 70 countries around the world.

Females have a long, thin, tubular organ that collects blood and feeds their eggs, while males feed on nectar or plant sap.

Habits of Aedes albopictus

Aedes albopictus can survive in highly variable habitats and environments, is very adaptable, and prefers to breed in small containers of stagnant water, such as bowls, cups, vases, water tanks, pot holders, etc. In general, they are more aggressive than other species of mosquitoes and can bite animals, especially humans, extremely quickly.

Aedes albopictus mosquitoes have blood-sucking presence throughout the day, and the peak period of activity is in the early morning and evening, about 1-2 hours before sunrise and 2-3 hours before sunset.

The eggs of Aedes albopictus are highly resistant to cold and vigorous, and they are easily carried and transmitted, allowing it to invade new territories and develop into a dominant mosquito species, becoming one of the 100 fastest spreading species in the world over the past 20 years.

The black mosquito is also often referred to as the flower mosquito, and there are two types of flower mosquitoes, one is the Aedes aegypti mosquito and the other is the Aedes albopictus mosquito. Aedes aegypti mosquitoes are dark brown or dark mosquitoes with silvery-white markings and white rings on the tarsal joints. The mesothoracic shield is flanked by a pair of long-handled sickle-shaped white spots, with a pair of golden yellow longitudinal stripes in between, forming a string-like pattern.

Aedes aegypti is dark brown with silvery-white spots on its body; Aedes albopictus is black or dark brown in color, and has white stripes and silvery-white spots on its body, so these two mosquitoes are also called "flower mosquitoes".

Aedes aegypti: Aedes aegypti is a dark brown or dark mosquito with silvery-white markings and white rings on the tarsus. The mesothoracic shield is flanked by a pair of long-handled sickle-shaped white spots, between which there is a pair of golden-yellow longitudinal stripes, formed.

One-stringed piano-like pattern. The larval antennae are smooth and spineless, the antennae hairs are 1-a fine, single-branched; head hairs 5-7c single-branched; body without stellate hairs; Ctenophores are single-row, with well-developed lateral spines at the base of each tooth. In addition to the wild mosquito line in African forests, Aedes aegypti mosquitoes are household mosquitoes that are closely related to human habitation.

The larvae mainly breed in stagnant water containers around residential areas or indoors, especially in indoor drinking water tanks; Female mosquitoes sting and sucking human blood in the same places.

They suck blood mainly during the day, usually with a peak of stinging near dusk and in the morning. Aedes aegypti mosquitoes are widespread in tropical regions of the world. In China, they are found in the Zhanjiang region of Guangdong, Hainan Province, southern Taiwan, most of the mountainous areas of the southwest, a few areas of Beihai City and Qinzhou City in Guangxi, and Weizhou Island.

They are the transmitters of dengue fever in the above-mentioned areas of China. Abroad, they are also the main vectors of urban yellow fever and chikungunya, making them one of the most dangerous mosquito species.

Aedes albopictus: Aedes albopictus is also a dark or black mosquito with silvery-white markings and white rings on the tarsus. The mesothoracic shield has a silvery-white longitudinal stripe, and there is a cluster of silvery-white broad scales in front of the wing base. The larvae are similar to Aedes aegypti mosquitoes, but the base of the ctenophores is absent from lateral spines.

They are semi-wild mosquito species. The larvae mainly breed in bamboo tubes, tree cavities, stone holes, waste tires, tanks and other containers near human settlements, and are also found in the leaf axils of pineapples and other plants. Female mosquitoes suck the blood of humans and animals during the day and at dusk.

Outdoors, there is usually a peak of stinging around sunrise and around sunset. Aedes albopictus is everywhere.

Black mosquitoes are much more toxic than ordinary mosquitoes.

The black and white mosquito is Aedes albopictus. Aedes albopictus is also known as Asian tiger mosquito, spotted mosquito, flower mosquito, is a mosquito species of the order Diptera, mosquito family, and Ichino mosquito, belonging to the family of Diptera. Originating from Southeast Asia, it is a common mosquito species in Southeast Asia and China.

Aedes albopictus is both a highly aggressive mosquito and an important viral vector that can transmit many pathogens, including dengue, Ross River virus, and West Nile virus. <

The black and white mosquito is Aedes albopictus. Aedes albopictus is also known as Asian tiger mosquito, spotted mosquito, flower mosquito, is a mosquito species of the order Diptera, mosquito family, Aedes mosquito, belongs to the family of Diptera. Originated from Southeast Asia, it is a common mosquito species in Southeast Asia and Zhongling Haohao country.

Aedes albopictus is both a highly aggressive mosquito and an important viral vector that can transmit many hosiery pathogens, including dengue, Ross River virus and West Nile virus.