What are the characteristics of locusts?

Locusts are larger among insects, their mouthparts are very hard, the muscles on their hind feet are strong and developed, and their front wings are tough and good at flying. Locusts are not only very diverse, but also quite widespread, especially in plains and places with relatively low altitudes. Locusts are the most harmful insects to agricultural production, especially in locust years, and their devastation is eye-popping.

Locusts are herbivorous insects, and their favorite food is fat leaves, and many crops such as millet, rice, corn, and greens, as well as weeds such as reeds and dogtail grass can also become their food. Adults are even more destructive, eating the leaves and stems of plants, and eating an astonishing amount of food, sometimes even eating crops down to the stalks. However, locusts are affected by their living environment and prefer to live in groups, and when locusts migrate in dense groups, the damage to crops is even greater.

Especially in dry years, the dry climate, shrinking water surface, and increasing wasteland area provide enormous favorable conditions for locust reproduction, and also make locust plagues most likely to occur in dry years.

The characteristics of locusts adapted to life on land and in the air are: the land climate is relatively dry, and in line with this, locusts have an exoskeleton, which has the function of protecting and supporting the soft internal organs and preventing the evaporation of water in the body. The body of the locust is divided into three parts: head, thorax, and abdomen, and the locomotor organs - wings and feet are born on the chest.

The chest has well-developed muscles that are attached to the exoskeleton and pull locomotor organs to complete a variety of sports such as jumping and flying, which is conducive to foraging and avoiding enemies. Locusts have air-breathing organs located inside the body, the trachea. Locusts also have relatively well-developed sensory organs and nervous systems, which can respond to changing environments in a timely manner.

The wings of locusts are fan-shaped structures suitable for flight, and the movement of this structure is caused by the contraction and relaxation of muscles, which can produce upward lift and forward momentum in the air; Compared with the size of its own body, it has the characteristics of lightness, thinness, and large surface area, which is conducive to generating flight power by fanning the air, so that locusts can fly freely.

(1) The body of the locust is divided into three parts: 10 heads, 11 thorax and 12 abdomen, and the head has antennae, mouthparts and sensory organs such as single compound eyes; The thorax has feet and wings, and is the locust's center of movement; The abdomen is the center of respiration and reproduction There is a hard exoskeleton on the surface of the body, which protects the soft internal organs and prevents the evaporation of water in the body

2) The body of the locust is composed of many body segments, in addition to the trunk, the locust's 1 antennae and 10 abdomen are also segmented, which makes the locust's body movement more flexible, which is also a common feature of arthropods

3) The locust thorax is centered on wings and feet, and the thorax has well-developed muscles that pull these locomotor organs Insects have 3 pairs of feet, of which the feet include forefeet, midfeet and hind feet, which are evenly segmented, and the hind feet are developed, (some insects' feet are specialized into jumping feet) suitable for jumping, 1 pair of antennae Most insects have 2 pairs of wings, and the wings represented by 9 are divided into a pair of forewings and hindwings, and the forewings are leathery, narrow and long, covering the hindwings for protection; The hindwings are membranous, soft and broad, suitable for flight

4) On both sides of the first segment of the locust's abdomen, there is a pair of half-moon-shaped membranes, which are the locust's auditory organs A row of small holes arranged neatly on the left and right sides is the valve represented in Figure 8 From the middle thoracic to the abdominal segment 8, each segment has a pair of valves, a total of 10 pairs Each valve is connected to the trachea inward In the locust's body, there are tracheas of different thicknesses connected vertically and horizontally, and the trachea is constantly branching, and finally the microscopic branches are connected with each cell for gas exchange

So the answer is: (1) head; Chest; Abdomen; Exoskeleton; Protects and supports internal soft organs to prevent water evaporation from the body.

2) Somites. 3)[9] wings; 2；3；1

4)[8] Valve.

The body of the locust is divided into three parts: head, thorax and abdomen, feet and wings are its flight organs, and there is an exoskeleton on the body surface, which is an invertebrate.

Locusts have an exoskeleton on their body surface, which protects and supports the soft organs in the body and reduces the loss of water in the body.

Locusts belong to arthropods, the trapping function of the antennae of the locust's head is olfactory receptors and tactile functions, on both sides of the first segment of the locust's abdomen, there is a pair of half-moon-shaped membranes, which are the locust's auditory organs, and a row of small holes arranged neatly on the left and right sides is the valve.

From the middle thoracic to the 8th abdominal segment, each somite has a pair of valves, a total of 10 pairs, each valve is connected inward to the trachea, and there are tracheas of different thicknesses in the locust body, and the trachea is constantly branching, and finally the microscopic branches are connected with each cell for gas exchange.

The locust also has two pairs of wings, the forewings are leathery, narrow and long, and have a protective effect, the hind wings are soft and wide, suitable for flight, and the feet and wings are its locomotor organs, which play a role in protecting and supporting the soft organs in the body, reducing the loss of water in the body, and the valve is the gateway for gas to enter and exit the locust's body.

Prevention and control methods

The East Asian locust has the widest distribution range and the most serious damage in China, and is the most important species of locust that causes the locust plague in Zhongmochen country, mainly harming gramineous plants and is an agricultural pest.

It should be emphasized that prevention should be carried out in advance, suppression should be given priority, and eradication should be supplemented in the later stage, and the sustainable management of locusts should be carried out in the blind ruler Zen, that is, actively develop and improve the level of detection and early warning technology, so that information can be transmitted quickly and accurately, transform and control the occurrence base of locusts, create an ecological environment that is not conducive to the occurrence of locusts, fundamentally control locust infestation, and use drugs to prevent and control locusts when necessary, so as to inhibit the formation of social locust populations.

Locusts have exoskeletons on their body surface.

Locusts are terrestrial animals, due to the dry climate of the terrestrial environment, so the body surface of the locust has an exoskeleton, which is used to support the role of soft organs in the body, and the body is wrapped with a slippery and tough Burning Laqing exoskeleton, which can not only protect itself, but also play a role in preventing the evaporation of water in the body, which is suitable for land life.

Morphological characteristics of locusts

Locusts are characterized by a body that is usually green, gray, brown, or black-brown, with a large head and short antennae; The dorsal plate of the anterior thorax is stiff, extending to the left and right sides like a saddle version, and the middle and back of the chest cannot be moved. The feet are well developed, especially the muscles of the hind legs are strong and powerful, the exoskeleton is hard, and the tibia has sharp saw spines, which is an effective defense**.

Locusts, are locusts, insects of the order Orthoptera. There are more than 10,000 species in the world. It is found in tropical, temperate grasslands and deserts all over the world.

The body surface of the locust has a hard exoskeleton, and its main role is to protect and support the soft internal organs and prevent the evaporation and loss of water in the body, which is one of the characteristics of adapting to life on land. The exoskeleton cannot grow with the growth of the locust's body, so in the process of locust growth and development, there is a phenomenon of shedding the original exoskeleton, which is molting.

Locusts have the characteristics of strong reproductive ability, large appetite, rapid growth, good at flying and living in swarms, and also have chewing and sucking mouthparts, which can quickly cut off and chew plant stems and leaves, which are also the reasons why locusts are seriously harmful and easy to become plagues.