CATDOLL : CATDOLL: What are the parts of a locust? (Pictures of what are the parts of a locust?)

1. What are the vocal organs and methods of cicadas, locusts, katydids and mosquitoes respectively?

The cicada has large circular sound-making organs on both sides of its body, and a disc in the middle of its body that can open and close. The disc opens and closes very quickly, and the shaking cicada chirps are produced from it. This sound lacks variation. The sound-making organs of locusts are called sound files and scrapers. When the two rub against each other, they also cause the front wings to vibrate and make a clacking sound.

The katydid's generator is on its back, and it makes sound by rubbing its two front wings together.

Mosquito: It's late at night and you're about to fall asleep. At this time, if a mosquito flies past your ear, you will hear a "buzzing" sound. This sound does not come from the mosquito's mouth, but from the rapid vibration of its wings when it flies. According to scientists' tests, when a mosquito is flying in search of a target, its wings can vibrate 250-600 times per second, and the air vibration caused by this is the "call" of the mosquito that we hear.

2. The organ for gas exchange in locusts is the spiracle, so what is the part of gas exchange?

The locust has many tracheas and air sacs extending from the spiracle into the body, and there is a place for gas exchange at the end of the trachea.

3. Do locusts lay eggs on land?

Yes, locusts lay their eggs on land because locusts only live on land, they do not live in water.

When locusts lay eggs, they find some sandy soil, insert their tails into the soil, and remain motionless for thirty to forty minutes. But if you observe carefully, you will see that their heads are shaking, which means that they are working hard.

After laying eggs, the locusts cover the entrance of the egg-laying hole with sand and step on it firmly as a camouflage to prevent the enemy from finding the entrance and ensure the safety of the children.

4. What are the living habits of locusts?

Locusts are Orthoptera

Locusts have obvious living habits: first, they are herbivorous/gluttonous, second, they are migratory, and third, they are good at jumping.

1. Herbivory and gluttony. Locusts have typical chewing mouthparts, with well-developed upper jaws that cut off plants. Both adults and nymphs feed on plants. They are gluttonous in feeding on plants. They feed not only for nutrition but also for water. Therefore, they will continue to feed and excrete, absorbing water for body needs. They mainly feed on grasses, sedges, beans, forage, etc. There are 1,000 species of locusts in China, of which 60 species harm agricultural, forestry and animal husbandry crops.

Second, migration. Locusts usually live in scattered areas, but when the climate is suitable, their number increases greatly, so they gather together. When the number reaches a certain level, they will migrate in a certain direction. "It covers the sky and the sun, and not a blade of grass can survive." Its harm is very serious, with a density of 1,000 to 2,000 per square meter, and up to tens of thousands. For example, the East Asian migratory locust, rice locust, forage locust, etc. are all famous agricultural, forestry and animal husbandry pests.

Third, jumping ability. Locusts have well-developed hind legs, and their femurs and tibias are very well developed. They are good at jumping and can jump 20 times their body length and 6 times their height. However, the long hind legs are a burden when walking. The hind legs can make sounds when rubbing against the front wings.

5. What is the local name for locusts?

The local name of locust is grasshopper, also known as grasshopper, oil grasshopper, and grasshopper.

It belongs to the order Locusta in the order Orthoptera. It is usually green, brown or black, with a large head and short antennae. The pronotum is hard and extends to the left and right like a saddle. The middle and metathorax are fused and cannot move. The legs are strong, especially the muscles of the hind legs. The hard exoskeleton makes it an expert in jumping. The tibia also has sharp saw spines, which are effective defensive weapons. The ovipositor is not obviously protruding, which is the biggest difference from katydids. It likes to eat thick leaves, such as sweet potatoes and water spinach. It often appears in fields and bushes. When grasshoppers reproduce excessively, resulting in high density and food shortage, they will change their lifestyle and migrate in groups to new places to find food. At that time, people call it locust.