What are the types and pictures of mosquitoes?

Adult mosquitoes are small with dark brown tentacles and three white rings. The width of the end white ring and the sub-end white ring is usually close, and the dark ring between the two white rings is narrow, which is 1/2 of the end white ring. The other 1 white ring is narrow and located in the second half of the antenna, and the width of white ring and dark ring varies greatly. The beak is dark brown, or there are light spots on the ventral surface of the tip 1/3. There is no scale or only hairy scale in the middle of female mosquito shield. There are usually five broad white spots in the leading wing vein, namely, shoulder white spot, pre-branching white spot, branching white spot, sub-marginal white spot and sub-terminal white spot, but there are also great individual variations in white spots, such as some white spots before branching, which are only composed of several white scales. All longitudinal veins except V6 have white spots with tassels. Feet are dark brown, with hocks or white spots on the back and narrow white rings at the end. All hocks are black. The ventral dorsal plate is light yellow, light brown or brown; Male mosquitoes without scales are generally similar to female mosquitoes. At the end of the tentacle, two segments expand slightly outward, the base and abdomen are darker, and the rest are lighter, with three white rings. Larval head, 2-C and 3-C hairs, with a single branch. Chest hair 1-2P has pinnate branches, and 3-P is small but not branched. The ventral segment ⅲ ~ ⅶ has a large anterior dorsal sheet, which surrounds the dorsal sheet. The egg deck accounts for 18%- 19% of the egg width.

2. Anopheles anthropophagus

The base of the leading pterygoid vein is usually uniform and black, and the transverse pterygoid vein is scaleless. There is no T-shaped dark spot on the ventral membrane. There is no pale scale on the back of basal ganglia in male mosquitoes. There is no obvious difference between the two larvae. Eggs are pointed at both ends, and the deck is very narrow, accounting for about110 of the width of eggs.

3. Anopheles sinensis

Female mosquitoes must have a white ring on their chin; There are obvious white spots on the sub-marginal veins and sub-terminal veins of the leading edge of the wing; The basal segment can be mixed with a small amount of pale scales, but there is no white spot; The trunk of radial vein is mostly black, and the transverse vein of arm usually has a few scales; The longitudinal vein 6 has only two black spots; The posterior tarsal tubercle 1 ~ 4 has a narrow white ring, and the base of the fourth tubercle usually has no white ring. Male mosquitoes have many pale scales on the back of basal ganglia. Larvae head hair 2-c is simple, and 3-C branches are simple dendritic hairs (1-p). The deck width of eggs is about 65438+ 0/3 of the width of eggs (including floating objects).

4. Culex pipiens

A genus of Culex, Culex. It is called Culex pipiens. Widely distributed all over the world, it is the second largest genus of mosquito family, with more than 800 known species and subspecies. There are more than 70 species known in China. Larvae breed in various water bodies or containers. They are the most common indoor mosquitoes, commonly known as house mosquitoes.

5. Aedes albopictus

Commonly known as the "flower mosquito", it mainly sucks blood during the day, stings fiercely, and spreads dengue fever. It is known as the "Asian tiger mosquito". Breeding in natural stagnant water and small containers, such as tanks, pots, flower beds, bamboo tubes, tree holes, lunch boxes, waste tires, bonsai, blocked roof ditches, etc. Spotted mosquitoes bite and feed at night and day. Spotted mosquitoes are not only fierce, but also good at flying. Generally, the flying distance of mosquitoes is only tens to hundreds of meters, and the farthest is not more than 1-2 kilometers, but spotted mosquitoes can fly 5-7 kilometers, and they can also do "difficult actions" such as tumbling back and forth, diving, sharp turning, sudden acceleration or deceleration at will.

6. Aedes aegypti

Aedes aegypti is the chief culprit of dengue fever. Recently, when the personnel of Haikou Port Inspection and Quarantine Institute carried out sanitary supervision on an imported Vietnamese ship, they found that there was water in an old iron drum on the stern deck, which contained a large number of young mosquitoes, eggs and larvae. The staff conducted technical identification of these young mosquitoes in time, and confirmed that these insects are the main biological vectors of dengue fever-Aedes aegypti.

International TV reported that "dengue fever" is an acute infectious disease spread by mosquitoes in tropical and subtropical areas, which has the characteristics of rapid spread and high incidence, and even severe bleeding and shock may lead to death. In recent years, the epidemic situation of dengue fever in Southeast Asian countries is very serious, and another epidemic peak has appeared, with tens of thousands of people getting sick and hundreds of people dying every year. Imported cases are reported every year in many provinces of China, and local cases of dengue fever have also broken out in Guangdong and Taiwan Province provinces recently.