CATDOLL : CATDOLL: When is the locust net

When is the locust network

The most locusts are in the summer. The high temperature in the summer is especially suitable for the reproduction and growth of locusts. Therefore, the effect of locust netting is best in the summer. Locusts are very harmful to crops. Once a locust plague occurs, at the least, crops are destroyed and the yield of agricultural products is reduced. In severe cases, wherever the locusts fly, agricultural products will be completely lost, and the fruits of farmers' labor will all be wiped out, causing famine. The disaster of locusts must not be underestimated.

In summer, there are the most locusts. The high temperature in summer is especially suitable for the large-scale reproduction and growth of locusts, so summer is the best time to catch locusts.

What impact do natural enemies and winter temperatures have on locust growth?

The head antennae, palps, tail, abdomen, and legs have receptors that sense touch. The mouthparts of the olfactory organs on the antennae are responsible for taste. The tympanic membranes on both sides of the first abdominal segment, or at the base of the forelegs, are responsible for hearing. The compound eyes of the locust are responsible for vision.

The single eye is responsible for photoreception. The hind legs are stout and suitable for jumping. The male's left and right wings rub or rub the veins of the front wings with enough sound to record and pronounce the leg parts. Some types of flying pronounce. Different habitats, such as the southern United States Marellia remipes floating plants, spend their lives, can swim, and lay eggs on water plants. The body is medium or large, and some species (such as South America, Brazil's row of brown locusts Tropidacris latriellei) are more than 11 cm long. People in some areas feed on locusts. Locusts are natural enemies of birds, birds, frogs and snakes, and humans catch them in large quantities. The body is usually green, gray, brown or dark brown, with a large head, short antennae, a hard pronotum, extending around the sides like a saddle, and the chest is healed and cannot move. Developed feet, especially strong hind legs, hard exoskeleton muscles, jumping experts, sharp saw-like spines on the tibia are effective defensive weapons. The ovipositor is not prominent, Katydid superfamily. The head, except for the tentacles, has a pair of compound eyes, which are the main organs of vision. Along with 3 simple eyes and photoreceptors. Below the head is the mouthparts, the feeding organs of the locust. The mouthparts of the locust are upper lip (1), maxilla (1 pair), tongue (1), (1 pair) mandible, lower lip (1). It is very difficult to taste, suitable for chewing, chewing mouthparts are called. On both sides of the first part of the locust abdomen, there is a pair of semi-lunar film auditory organs of the locust. Neatly arranged on the left and right sides of the row of holes is a valve. From the thorax to the abdomen 8 each separate part has a pair of valves, a total of 10 pairs. Each valve inward with the trachea. The locust's body thickness range is connected to the trachea, the trachea repeatedly branched, fine branches and cell respiration connection. Therefore, the valve is the portal of gas access to the locust body. Diet: herbivorous. Like to eat fat leaves, such as sweet potatoes, spinach, cabbage. Incomplete metamorphosis of growth and development.

Edit this section Development

Every summer and autumn breeding season, after mating, the female locust inserts the ovipositor into the soil 10 cm deep, and then lays about 50 eggs. When laying eggs, the female will secrete a white substance to form a cylindrical bolt substance, and then put the eggs into production. The development process of locusts is relatively complicated (as shown in the figure). Its life starts from the fertilized egg. The larvae hatch from the eggs, have no wings, can jump, and are called "jumping hopper nymphs." The jumping funnel is similar in morphology and living habits to adults, but with a smaller body and mature reproductive organs. This form of insect is also called "fairy". Gradually grow up, when the exoskeleton is limited and can no longer grow, it will shed its original exoskeleton, which is called molting. The nymph molts 5 times in its life. The first molt after the egg hatches, 1 year old, and after 1 year old, it molts once. The third instar wing buds are significant. The fifth instar becomes an adult and can fly. It can be seen that the process of individual development of locusts goes through three stages: egg, nymph, and adult. This development process is called incomplete metamorphosis. The growth and development of insects from fertilized eggs to adults , and the entire individual development history that can produce offspring is called a generation. In some areas of the country, locusts occur in two generations, summer locusts and autumn locusts, so there are two representatives. At around 24°C, locust eggs hatch in about 21 days, and the hatched nymphs crawl out of the soil as athletes, just like its shape and adult without wings, lighter body color. At first, the second-instar larvae look more like adults, but the proportion of the head and body. Grow the third-instar wing buds, which are obvious in the fourth-instar wing buds. The fifth-instar nymphs will climb the plants, feed for a few days, and hang down their bodies, waiting for a period of time for the adult to emerge. The life of locusts goes through three development stages: fertilized eggs, larvae and adults.

Developmental stages of developmental stages of developmental stages

Adults and nymphs of locusts have well-developed morphology and living habits. They chew the stems and leaves of plants with chewing mouthparts. They are good at flying and jumping, and have a pair of antennae on their heads as organs of smell and touch. The large mandibles have well-developed chewing mouthparts, which can snap the stems and leaves of plants. It is strong enough to rely on the hind legs to jump mainly. The hind wings play a major role in the flight of locusts, and the elytra cover the protective effect of the hind wings when they are at rest. Strong oviposition, the end of the female abdomen can be inserted into the soil to lay eggs, and the places where locusts lay eggs are wet river banks, lakes, hills and ridges, with 30 to 60 eggs in one. The hatched eggs and immature locusts are called "funnels", which shed 5 skins to develop into adults. After the rain, a large number of eggs can be laid in the incubator. Locusts also have amazing flying ability and can fly continuously for 1 to 3 days. The sound of the locust wings in the locust flight group is amazing, like the roar of an ocean storm. This is a grasshopper. The diameter of the vein base of the front wing is equivalent to the string of thick veins. The adult

The hind leg segment has an equivalent, and the two sides rub together, and the wings vibrate to make sounds, which is their pronunciation is also very special. Locusts hear the side of the abdomen, the first segment. Commonly known as the "grasshopper" locust, Taiwan calls it "Grasshopper. Their life history is egg → nymph (larva) → adult is an incomplete metamorphosis. The chewing mouthparts of herbivorous insects. Not very picky eaters, often seen on the grass in the wild, it is a bite chewing grass plant leaves. Its antennae are so long that they are a short whip, but it has strong hind legs and jumps to avoid natural enemies. Sometimes, you can still see two locusts (male and female) married screen. Breathe through lungs and belong to the non-vertebrate arthropod class (commonly called "insects").

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1 rice

Appearance: 21-31 mm body length ♂♀26? Weight is about 39 million. The back of the body is gray-brown, and the abdomen and legs are green. Ecological habits: This species is very common in the vegetation of plains and low-lying areas. Adults are almost everywhere except in winter. It mainly feeds on the leaves of grass plants and was the main pest of rice. Living environment: plain areas at low altitudes. Living environment: grassland environment. Diet: herbivorous insects, including rotten fruits of plant parts. Time: Sunday insects.

2. Outbreak of East Asian migratory locust

Case, Insecta, Orthoptera, Acrididae. According to statistics, there are 223 genera and 859 species in the superfamily Acridoidea. The East Asian migratory locust grows under natural temperature conditions for two generations, the first generation is called summer locust, and the second generation is autumn locust. Artificial breeding can be converted to four generations per year. Locusts have six legs, the disc body is separated, part of the thorax, abdomen, thorax has two pairs of wings, wing keratin, membranous hind wings. The body is brown, and the male mating period is bright yellow. The length of the female locust body is 39.5 mm to 51.2 mm, and the body length of the male locust is 33.0?41.5 mm. Adults are good at jumping and flying. The East Asian migratory locust has a sturdy body and a wide range of adaptability to feed. After 35 days of feeding, it can be used as an adult. It takes about 50 days to sell the fat, so the time is short and the return is fast. 10,000 East Asian migratory locusts are fed to 20 kg adults, and the economic benefits are considerable, and the seeds are purchased only once. The locusts are hatched from the eggs, and the locusts lay eggs over and over again. After years of breeding, they continue to make money. A female locust can lay 35 to 90 eggs. The reason why locusts are favored by people is that they are soft, juicy, fresh and nutritious. According to experts, the protein content is as high as 74.88%, the fat content is 5.25%, the carbohydrate content is 4.77%, and it contains 18 kinds of amino acids and various active substances. Female morphological characteristics: adult body length is 39.5-51.2 mm, and adult is 33.5-41.5 mm male. Body brown or green. Antennae are filamentous, mostly light yellow, with 3 single eyes of compound eyes. The compound eyes are dark, light stripes, and the health mark below the front. The pronotum is saddle-shaped and long. The forewings are well developed, often with dark stripes, and the shiny hindgut part is more than the middle. The hind wings are colorless and transparent. The proximal part of the inner leg part is black, the hind hoof has a black ring, and the foot shank is red. Under the influence of on-site environmental conditions, it often forms two types of gregarious stages and solitary stages. The egg is about 6.5 mm, light yellow, cylindrical, slightly pointed at one end, and slightly rounded and slightly curved at the other end. The brown egg mass is cylindrical, 53-67 mm long, slightly curved, the upper part is a little thin, and the spongy gums cover the egg mass, and the rows of eggs are arranged in the lower part. Nymphs, also known as locust pupae, have bodies similar to adults. 5 years old. Born in generations, living habits in Beijing, Bohai Bay, the lower reaches of the Yellow River, the Yangtze River, a few years old, the third generation in Guangxi, Guangdong, Taiwan, and the fourth generation also appeared in Hainan. The East Asian migratory locust has no diapause phenomenon and the eggs are laid in the soil throughout the country in winter. The second generation in Shandong, Anhui, Jiangsu, etc., the overwintering eggs hatch from mid-May to the end of April, 35-40 days after the summer locusts emerge, 10 days later, mate and lay eggs on the 7th day, 15-20 days after the eggs are in mid-July, the peak of egg laying is called autumn pupae, 25-30 days after Yulangtong, and enter the autumn locust. The life of L5-20 days begins to mate and lay eggs, and the peak of egg laying is in September after wintering. In some years of high temperature and drought, the pupae of the generation of locusts hatch in late August and September of the next year, and most of them freeze to death in winter, and only a few emerge and lay eggs to overwinter. The terrain, soil properties, soil surface, plants and other important factors in the selection of egg-laying terrain. Each female locust generally produces 4 or 5 eggs per egg mass, including about 65 years, and almost all eggs are fed to migratory locust adults every day. After the density of migratory locusts changes from the solitary type to the density of the hour, individuals contact each other and gradually cluster ranking types. Social locusts have long-distance migratory habits, and the migration occurs 5-10 days after the emergence of the reproductive tube before maturity. Migration in the air for 1-3 days. The solitary phase locusts are the same, when the insects exceed 10% square meters, sometimes the phenomenon of migration. Social migratory locusts contain less fat intake, less water, strong activity, but a few ovarian tubes, low fertility. Solitary type. Migratory locusts like low-lying habitats, beaches or lakes that are prone to drought or unstable water levels, and large areas of wasteland, extensive breeding on wasteland, low raw materials reeds, thatch or salt poles, sedge indulge in food plants. In the case of dry years, the water in this wasteland is dry, which is conducive to the increase of locust fertility and the increase of locust area, which is easy to cause locust plagues. Therefore, pay attention to the moment when there is a drought year, locust control. Natural enemies are parasitic wasps, parasitic flies, birds, frogs, etc.

3. Red Queen Locust

The body length of the Orthoptera total locust is 20-25mm for males and 34-42mm for females. The body color is simple green or brown, the head is long and pointed, and there are small white protrusions on the head, chest and feet. It is commonly known as the "pointed grasshopper"; when flying, the pink feathers under the wings are visible. It is the most common locust. Adults live in the forest edge vegetation of the plains and medium-altitude mountains throughout the year. Adults chew green plants, often with irregular holes marking the leaves of the plants. Locusts are good at jumping, but not good at flying. The body has excellent protective color and is not easy to be found.

Taiwan Giant Sophora japonica

Taiwan locust is different from the East Asian migratory locust, Taiwan locust is Taiwan locust, especially the maximum size of female, up to 8,9 cm in length. Ecological habits, no matter what kind of locust locust can not be considered fierce and skilled. But people who try to capture the unarmed locust tree, there is a different experience, because the Taiwan locust thick red verses behind the hind legs, covered with spikes, was captured, it will kick violently, the skin is delicate children, you want to catch it by hand, it may be with your hand your fingers or palms a tingling, even open a small drop of blood! The biggest feature of the locust is that there is a well-developed hind legs long distance jump, can easily jump to the body ... Taiwan is commonly known as grasshopper locust, locusts are widely distributed and adults mainly occur in autumn, while in the south in winter, even in the spring of the following year can see adults, insects produced in the year, mainly located in low altitude mountainous areas. In autumn, female eggs are laid on the surface and slowly die, the egg capsules in the winter underground, the spring of the following year begins to hatch, the larvae after hatching are grass, legumes.

5. Oxya

The body length is 2.2-3.5 cm, with a wide black belt after the compound eyes and wings, a slender body, and antennae with black spots. The lotus leaf bite marks are their masterpieces, as brilliant as poems and paintings.

6. Taiwan rice locust

Appearance characteristics: Body length is 21-31 mm for males and 24-39 mm for females. The back is brown, the abdomen and feet are green, and the body color is very different, similar to the habitat, forming a protective color. Habits: The Chinese rice locust is a common locust in grassland plains and low-altitude areas, with two generations each year. The reason for the group activities of locusts is because the physiological need for higher temperatures is close to insulation. The adult hind leg segment has equivalent bomb papillae, the base of the forewing radial vein is equivalent to the thick vein string, the two sides rub, and the vibration of the wings makes a sound in the earthquake zone, which is their pronunciation. The hearing of locusts is also very special. The Taiwan Chinese rice locust

The first part of the side is located in the abdomen. These two great threats to crops are migratory and non-migratory locusts, very powerful, especially in the former destructive power, all green plants, as long as everyone passing through is wiped away. The shock brought by the locust plague is really commendable. Their foraging habits are even mixed, and they eat a variety of green plants, especially the grass family. Also known as nymphs, nymphs look like adults, but only have wing buds (unreliable), good at jumping. The subject of 4 to 7 times molting will be transformed into a good jump and good flight adult. Locusts and some have short antennae and short ovipositors. There are currently about 5,000 species of locusts. The longest part of the locust's body is the back leg, which is about equal to the length, and the leap will be able to jump out a distance eight times the length of the body, and the locust's hind legs are also the best musical instrument, and the wings rub against each other to make a sound. Category: All insects belong to the order Orthoptera. Classification: About 12,000 species, 100 species are currently known in Taiwan. Life history: egg → nymph → adult. Appearance characteristics: commonly known as locusts, Taiwan called "Grasshopper folk songs" Grasshoppers play with cocks on the mountain, in which such small insects and big cocks tease each other, this is a common picture not long ago, lyrics in Taiwan's countryside, depicting locusts crossing the border familiar loud idioms Diet: herbivorous insects, most people are not particularly picky eaters. Another approach: marginal locusts, accustomed to living in moist bare ground, the main food moss Su plant habitat Protective color: typical protective color, with excellent stealth effect in the grass, the hind feet are thick and built up a good bounce encounter key, they often escape the enemy method. Mating behavior and relatively longer mating time than other insects. Female under male husband and wife team on the screen is common.

> Drought and prevention and treatment

Agricultural control

(1) Water conservancy projects to prevent disasters. (2) Reclamation and planting of large areas to change the habitat of locusts and reduce the base area of ​​occurrence. (3) Planting trees to change the microclimate of locusts and reduce the number of locust species in suitable places. (4) Improve farming and cultivation techniques to control the role of locust eggs and change the layout of crops according to local conditions to reduce locust disasters.

(1) Infested areas. Biological control, agricultural and biological pesticides with high efficiency and low toxicity are used to protect infested predatory natural enemies. You can also put chickens, ducks, geese and other poultry on the hillside for prevention and treatment. (2) Large areas? Apply microsporidia.

Edit this section to raise awareness of locusts <BR /, the selection, source and identification of farmed locusts

Identify locust species: Grasshopper (20) (1) Consult locust classification experts. (2) Access locust retrieval tables or maps. (3) Consult experienced locust farmers. (4) Send locusts to customers for identity review. Common types of farmed locusts: East Asian migratory locust, cotton locust, Chinese rice locust, and Chinese grasshopper. These species have their own advantages and disadvantages, and they should be selected by taking into account their growth cycle, generation, taste, food, size, and the species required by the customer, combined with local climate and food sources.

Locust breeding greenhouse construction and maintenance

Before building the shed, first eliminate ants and mole crickets on the ground. They can be used for catching, trapping, and boiling water. The above insects are natural enemies of locusts, and can prey on locusts and destroy locust eggs, so these animals must not be allowed to exist in the shed. In order to facilitate drainage in the rainy season, the ground should be 10-15 cm above the ground, and the best sandy loam, the soil is not easy to clump and easy to lay eggs. In mid-April, wheat and other crops can be planted on the ground in the shed, and immature locusts are consumed. The building area of ​​the shed for breeding locusts is determined to increase 10,000 locusts by 15 square meters. You can make full use of a free place outside the yard, according to your own conditions, wires, sticks, bamboo to build a shed bracket, and then the size of the bracket edge fabric (window screen cloth) to make a mosquito net like the shed cover hung on the bottom edge of the scaffolding buried in the ground, leaving the door, and place a zipper on the door. This device is to prevent locusts from coming out and easy to feed and manage. (You can also build an arched shed) The height of the shed is 1.5-2 meters, covered with plastic sheeting for insulation and waterproofing, and the outside of the shed is not afraid of rain and high temperatures and large (old) locusts. If you use natural conditions to breed locusts, the shed construction must be completed before the end of April, and it is appropriate to choose a sunny place.

, Management of nymphal stages

⑴ The food consumption of locust hoppers is very small, similar to feeding fresh plants. During this period, locusts are very delicate. Attention should be paid to rain to prevent the nymphs from drowning. ⑵ The temperature is best controlled at 25-30℃, with more than 12 hours of light and humidity maintained at about 15%. In this case, locusts are most active in eating, which is conducive to growth. ⑶ The appetite of the third-instar nymphs gradually increases in the shed to ensure that there is enough food, otherwise it will affect normal growth and will kill each other. ⑷ Keep the shed clean once every 1-2 days to prevent diseases.

Locust Plague Insects

Other special breeding, breeding, on the one hand, is different, it can change the victims of treasure, increase farmers' income, on the other hand, increase the amount of locusts, forming a potential danger, breeding must be necessary, security measures to achieve twice the result with half the effort. Breeding acres of land as a standard large-scale breeding breeding site should be built around the use of barbed wire fence around the half-meter wide plant quarantine zone, use pesticide sprayer, kill locusts of pesticide types, you can use 75% malathion emulsifiable concentrate, 2.5% diazinon pyrethroid insecticide can also be used to kill. If farmers do not want the final extinction measures locust breeding farmers do not want aquaculture, remove the spring can not locusts before May 20, after unearthed, do not use pesticides to kill all adults should be prepared in the annual anti-breeding shed, so that you will not harm. Before the end of autumn, farmers decided not to breed before September 10, before the locusts have not mated all sold, or killed by pesticides, shall not lay eggs in the breeding shed, such measures to ensure the elimination of potential dangers in the future, and is conducive to the healthy development of the breeding locust industry.

Biological characteristics and value Edit this paragraph

Locusts, medicinal and edible insects of locusts, oviparous, belong to the order Orthoptera, family Acrididae, class Insecta. According to statistics, there are 859 species of locusts. There are two main species of locusts that can be used as medicine for human consumption, namely the East Asian migratory locust and the Chinese rice locust. These two locusts are rich in nutrition, soft meat, fresh and delicious, like shrimp. According to the book "Research on Locusts" and "Feed Value of Locusts", locusts are rich in protein, carbohydrates, insect hormones and other active substances, and contain vitamins A, B, C, phosphorus, calcium, iron, zinc, manganese and other trace elements. Locusts are not only delicious food, but also a good medicine for curing diseases, warming the stomach and ribs, strengthening the spleen and digestion, and dispelling wind and relieving cough. "Compendium of Materia Medica" records that locusts are used alone or in combination to treat a variety of diseases, such as tetanus, convulsions in children, fever, asthma, fever and swelling, cormorant explosions, frostbite, bronchitis and prevention of cardiovascular and cerebrovascular diseases. Ten decoction, or fried preservation into powder, adjusted into powder serving five / frostbite fried sesame on the skin. With the development of society and the continuous improvement of quality, poultry life, human table food, the traditional green game type, locusts nutritious, tender meat, delicious, like shrimp, in Hong Kong and other places, "flying shrimp" reputation, for people of all countries to eat the best, "insect feast" guests, held in the United States, including locusts. It is reported that some obese hypertension, cardiovascular and cerebrovascular disease and more patients often eat insects to achieve the purpose of weight loss disease desire. In some countries and regions, followed by the rise of insect food cooking insects, or made into canned food, biscuits, ice cream and other foods, is very popular.

Edit this paragraph Realistic metaphor metaphor for not working, but devouring, crop pests and diseases erosion, the fruits of collective labor, because the locusts are used as a metaphor for things that are not there, and people who sit down to enjoy them are the best, but. The metaphor of a rush of people, we are talking about the "locust economy.

Edit this section Treatment value

The Chinese rice locust is an insect of the family Acrididae. Locusts have other parasites. Also known as grasshoppers. Distributed in North China, East China, South China and Central China, Sichuan, Shaanxi, Gansu, Taiwan and other parts of China. Take the wings and feet, wash them, and eat them after scalding them with boiling water. Fried locusts

High in protein. It is an ideal food. [Product performance] It tastes sweet, spicy, and warm in nature. It strengthens the spleen and digests food, relieves spasms, relieves coughs and calms asthma meridians. [Reference price] It is rich in protein and fat, calcium, phosphorus, iron, copper, manganese, vitamins A, B, and other ingredients. [Use] It is used for spleen deficiency or malnutrition, acute and chronic convulsions, convulsions and spasms, whooping cough, bronchial asthma, cough, and shortness of breath. [Usage] Decoction, stir-fry, or grind into powder. Attached prescription, fennel fried locusts: 30g each locust and 6g fennel. Put them together in cooking oil, stir-fry until cooked, add a little salt, and stir well. This side of the locust strengthens the spleen and digests food, and fennel regulates qi and stomach. People with spleen deficiency and qi stagnation, abdominal fullness, stuffy pain, and reduced diet. 2. Locust powder: locusts out of the oven dry powder. Take 3 grams each time, 3 times a day. Life-saving bitter sea "Wine delivery of this product's service, treatment of tetanus; Kimono" Compendium "Compendium of Materia Medica" has sugar, treatment of infantile convulsions, this product relieves spasms, counts wind to take palliative treatment (relieve symptoms. ) The provisions should be used with the root cause of the problem due to the use of drugs. Grasshopper Uncaria Soup: 10 locusts Uncaria 15 grams, mint leaves 10 grams. Add water and decoct, originated from "Baicao Mirror. All parties take locusts, Uncaria counts wind to stop spasms, mint leaves evacuate wind and heat. For convulsions, fever, convulsions and spasms. 4, grasshopper soup: 30 locusts, decocted in water, divided into 3 servings. From the supplement "Compendium of Materia Medica". This party takes locusts to relieve cough and reverse, and asthma. Whooping cough, cough, shortness of breath, endless series. Can also be used for bronchial asthma.

Edit this section Locust plague

Humans have long noticed that severe locust plagues are often accompanied by severe droughts. There are records of "drought and locusts" in ancient books. Several large locusts in Africa in recent years have also been associated with local severe droughts. The main reason for this phenomenon is that locusts are warm and dry insects, and the drought environment has many benefits for their reproduction, growth and survival. Locust eggs are in the soil. The soil is relatively solid and the water content is between 10% and 20%, which is the most suitable range for their egg-laying. There are two reasons why drought locusts reproduce and grow rapidly, leading to disasters. On the one hand, in drought years, the water level drops, the soil becomes more solid, the water content is low, the ground vegetation is sparse, the number of locust eggs increases, and the soil egg-laying egg mass exceeds 4,000 to 5,000 per square meter, 50 to 80 eggs, and each egg mass contains 2 million to 4 million eggs per square meter. At the same time, in drought years, rivers and lakes are narrow, low-lying land is exposed, and provides more suitable places for locusts to lay eggs. On the other hand, the lower water content of plants grown by the arid environment, as food, fast growth and higher fecundity of locusts. On the contrary, the rainy and humid environment has many adverse effects on the reproduction of locusts. Locusts feeding on plants with high water content delays locust growth and reduces fertility. The rainy and humid environment also causes epidemic diseases for locusts, and rain and snow can directly kill locust eggs. In addition, the increase of frogs and other carnivores will increase the mortality rate of locusts. If the locust touches a part of the locust's hind legs, it will change its original solitary habit and become gregarious. Locusts are generally timid and like to live alone, and their harm is limited. But they sometimes change their living habits, such as cluster life, and finally gather in large numbers, large-scale migration, a terrible locust plague, causing great damage to agriculture. Scientists at the University of Oxford said that they tested desert locusts in the solitary stage, repeatedly touching several parts of the locust's body to find out whether there are some tactile factors that make locusts change their living habits. The results showed that when a part of the locust's hind legs is stimulated, they will suddenly become most gregarious, and touching other parts of the body, such as the antennae, mouth or abdomen, will not have this effect. Since early April 2010, swarms of locusts have swept across four states in southeastern Australia, covering an area of ​​about 500,000 square kilometers, seriously affecting the production and life of local residents. Experts predict that the locust disaster may spread to inland areas. The affected areas include four states, Queensland, New South Wales, Victoria and South Australia. Local 100 acres of wheat and pasture plants have been chewed up by locusts. These locusts move very fast, and the huge locust swarms can fly an area of ​​hundreds of kilometers overnight, bringing the most serious losses to local farmers. The normal life of residents has also been affected. Due to concerns that locusts may be involved in the engine of the aircraft, some roads and civil aviation departments have been forced to interrupt traffic. In order to travel, some car drivers must install iron fences on the front windows to avoid being disturbed by locusts and accidents. Entry Atlas Atlas Grasshopper (20)