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Dragonflies are the insects with the most eyes in the world. The dragonfly's eyes are large and bulging, taking up almost the majority of the entire head, and each of its eyes is made up of countless "small eyes" connected to photoreceptors and nerves, so that various objects can be clearly distinguished from each other. And they also have excellent eyesight, so you don't have to turn it to look in all directions.
In addition, its eyes also have the ability to measure speed with their compound eyes. When an object moves in front of its compound eyes, each "small eye" will react one after another, and after a series of processing processes, the speed of the target object can be accurately determined. This skill has made them a well-known insect catcher in the insect world.
Dragonflies are generally larger, with slender and broad wings, extremely clear reticulate wing veins, and wing nevi on the anterior edge of the wing near the apex of the wing; a pair of thin, shorter antennae; abdomen elongated, flattened or cylindrical; The feet are thin and weak, with hook spines on the feet, which can catch pests when flying through the air. The larvae generally have to go through more than 11 molts in the water, and it takes 2 or more years to crawl out of the water along the aquatic weeds, and then the last molt before they can emerge into adults. Juveniles prey on their own or other small animals in the water, and sometimes cannibalism among their own kind.
In addition to being able to prey on a large number of mosquitoes and flies, some can also prey on butterflies, moths and other pests, and are good friends of human beings. Dragonflies prefer to fly in ponds or rivers, and the larvae develop in the water. Before rain, dragonflies often fly back and forth at low altitudes, and male and female copulation also takes place in the air.
Most females fly on the surface of the water by "spotting" their eggs in the water several times, and some insert their abdomen into shallow water to lay their eggs at the bottom. Dragonfly.
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The insect with the most "eyes" in the world is the dragonfly, the eyesight of the dragonfly is very developed, and it can catch small insects in flight Dragonfly is a carnivorous insect, they prey on flies, mosquitoes, leafhoppers, midges and small butterfly moths and other forest and animal husbandry pests, dragonflies are an important class of insects that are beneficial to humans.
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Dragonflies have 28,000 small eyes per compound eye, which are shared by both compound eyes10,000 glasses.
The dragonfly in nature is a compound eye, the compound eye of the dragonfly is the largest and most in the insect world, accounting for 2 3 of the entire head, and the two large compound eyes of the dragonfly are composed of 28,000 small eyes, so there are 10,000 dragonfly eyes, which is 10 times that of ordinary insects.
As the animal with the most eyes in the world, dragonflies not only have many eyes, but each eye has its own system, each with its own refractive system and sensory cells, so it has vision. This also leads to the dragonfly's astonishing eyesight throughout its eyes, with the upper part looking far and the lower part looking close. This kind of vision also allows dragonflies to catch small insects in the air, and they never miss.
Dragonfly compound eyes introduced:
Insects don't have good eyesight, but dragonflies are an exception, their compound eyes are particularly large, and the entire head is almost occupied by the two protruding compound eyes.
The compound eye is relative to the monocular eye and is made up of most small eyes. Each eyelet has a cornea, crystal vertebrae, pigment cells, and retina.
Structures such as cells and rods are independent photoreceptors. Axon.
It protrudes posteriorly from the retinal cells and crosses the basal membrane to form the optic nerve.
The structure of the dragonfly's eyes is also very special. A small eye in the upper part of the compound eye that specializes in seeing distant objects. The small eyes in the lower part are dedicated to looking close.
In addition to this, the eyes of insects are mostly immobile. But dragonflies' eyes can move freely with their necks, so dragonflies can look around left and right.
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Dragonflies have 2 eyes.
The dragonfly's eyes are large and bulging, and they are a pair of compound eyes that are made up of many small eyes, each of which is able to observe its surroundings independently. As a result, dragonflies have a very wide field of vision and are able to see all directions around them.
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Dragonflies have 1 pair of compound eyes, each of which is composed of many small eyes, and the compound eyes are composed of about 28,000 small eyes.
Dragonflies are the insects with the most eyes in the world. Dragonflies have large, bulging eyes that take up the majority of their heads, they have excellent eyesight, and they can look up, down, forward, and backward without having to turn their heads.
Each eye is a small camera, and the surrounding objects are constantly ingested to form images. It can see things up to 6 meters. The whole compound eye is spherical, and its curved surface can take care of all directions, and the dragonfly's large head can rotate freely, so that the dragonfly's field of vision is very wide.
In addition, their compound eyes can measure speed. When an object moves in front of the compound eye, each "small eye" reacts in turn, and the speed of the target object can be determined after processing. This makes them masters of insect catchers in the insect world. Its chewing mouthparts are well-developed and powerful.
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Dragonflies are a type of insect. Dragonfly is a generic name for invertebrates, insects, dragonflies, and suborder Paraptera.
The base of the hindwings is slightly larger than the base of the forewings, and the wing veins are slightly different. When resting, the wings lie flat on the sides. The larvae are short and thick, with rectal gills and no caudal gills.
There are 3 general departments, including Aeshnidea, Cordulegastroidea, and Libelluloidea, with a total of 11 families. Flyflies and dragonflies are the most common and are widely distributed throughout China.
The role of the dragonfly:1. In addition to preying on mosquitoes and flies in large quantities, adults can also prey on pests such as butterflies, moths, and bees, which are beneficial insects.
2. In terms of medicinal use, it can tonify the kidney, detoxify, relieve cough, relieve sore throat, etc.
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<>1. Dragonflies are the insects with the most eyes in the world. Dragonfly eyes are large and bulging, occupying most of the head, with three single eyes, and the compound eye is composed of about 28,000 small eyes, and the vision is excellent.
2. The wings of the dragonfly are well developed, the front and rear wings are equal and narrow, the membranous and reticulated wing veins are extremely clear, and the flight ability is very strong, up to 10 meters per second, which can turn suddenly and go straight into the sky.
3. The front edge of the wings is balanced, and there is one wing nevus near the top of the wing, which is rectangular or square, which can maintain the regularity of the wing vibration and prevent injury due to tremor.
4. Feet close to the head (to facilitate predation). The abdomen is elongated. Although the structure of the adults is quite uniform, the size varies greatly, and the wingspan is generally 5 cm.
5. The abdomen of the dragonfly is slender, flat or cylindrical, and there is an anal appendage at the end. The feet are thin and weak, with hooked spines, which can catch pests when flying in the air.
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