CATDOLL : CATDOLL: How do grasshoppers distinguish between male and female?

1. How do you distinguish between female and male grasshoppers?

The main way to distinguish whether a grasshopper is male or female is by its appearance and whether it has an ovipositor. It can be distinguished by body size. Female grasshoppers of the same species are usually larger than male grasshoppers. It can be distinguished by observing the abdomen of the grasshopper. Gently press the abdomen of the grasshopper. The female grasshopper will have a tubular ovipositor at the tail end of the abdomen, while the male grasshopper does not have an ovipositor. The male and female grasshoppers can be distinguished by observing their appearance. Generally, female insects are larger than male insects, especially in the abdomen. The abdomen of the female insect is composed of 11 segments. The pair of degenerate appendages of the 11th segment have evolved into short cerci, and there is also an ovipositor at the tail end of the abdomen. The 11th segment of the male insect does not have this feature.

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Morphological characteristics of grasshoppers: Grasshoppers are incomplete metamorphosis insects, including eggs, nymphs, and adults. Take the East Asian migratory locust as an example: Adults: Male adults are 35.5-41.5 mm long, and female adults are 39.5-51.2 mm long. The body is usually green or yellowish brown, and often varies due to environmental factors. The face is vertical, and the antennae are light yellow. The middle ridge of the pronotum is well developed. From the side, the scattered type is slightly arc-shaped, and the gregarious type is slightly concave, and there are often dark vertical stripes on both sides. The forewings are narrow and long, often exceeding the middle of the hind leg tibia, with brown and dark spots, and the gregarious type is darker. The hind wings are colorless and transparent. The gregarious type sometimes has two inconspicuous dark stripes on the upper side of the hind leg femur, which often disappear or are not obvious in the scattered type. The hind leg tibia is usually orange-red, and the gregarious type is slightly lighter, and there are usually 10 to 11 spines along the outer edge. (1) Head: Head - sensory and feeding center: The main structures of the head are antennae, eyes and mouthparts. Antennae: 1 pair, filamentous, segmented, sensory organs with touch and smell. Eyes: Locusts have 1 pair of compound eyes and 3 simple eyes. Compound eyes: Located on the upper part of the head, 1 on each side, relatively large, composed of many small eyes, and are the main visual organs. Simple eyes: 1 located between the compound eyes and the antennae, and 1 located in the upper center of the front of the head, forming an inverted isosceles triangle with the other two simple eyes. The simple eyes can only sense light. Mouthparts: It is the feeding organ of locusts. The mouthparts of locusts are composed of 5 parts, including 1 upper lip, 1 lower lip, 2 upper and lower jaws, and 1 tongue. The upper jaw is very hard and suitable for chewing. It is the main structure for cutting and chewing plant stems and leaves. (2) Thorax: Thorax - movement center: It is divided into prothorax, mesothorax and metathorax. There is a pair of legs on the front, middle and metathorax of locusts, which are called forelegs, midlegs and hindlegs respectively. The legs are segmented, and the hindlegs are well developed and suitable for jumping, which are called jumping legs. There is a pair of wings on the mesothorax and metathorax of locusts: forewings and hindwings. The forewings are narrow and leathery, covering the hindwings for protection; the hindwings are wide, membranous and soft, often folded under the forewings, and unfolded during flight, which are organs suitable for flying. (3) Abdomen: The abdomen of locusts is composed of 11 body segments. ① On both sides of the first segment of the locust's abdomen, there is a semi-lunar membrane, which is the locust's hearing organ. ② On the corresponding positions on both sides of the mesothorax, metathorax and the first to eighth segments of the abdomen of the locust, there is a small hole, called a spiracle, with a total of 10 pairs. The spiracle is the gateway for gas to enter and exit the locust's body. Gas exchange is completed through the trachea and tissue cells. Egg mass and eggs: The egg mass is yellow-brown, long and cylindrical, 45 to 61 mm long, slightly curved in the middle, slightly thin at the top, the upper 1/5 part is spongy colloid, does not contain egg grains, the lower part contains egg grains, and there is colloid adhesion between the egg grains. Each egg mass generally contains 50 to 80 eggs, up to 200, arranged obliquely in four rows. The egg grains are conical, slightly curved, 6.5 mm long and 1.6 mm wide.

2. What are the appendages of locusts that greatly enhance their senses and motor abilities?

The locust's appendages, antennae, mouthparts, legs and ovipositors greatly enhance its sense and movement abilities. Locusts are insects of the family Acrididae and the order Orthoptera. Commonly known as grasshoppers, there are many species, with more than 10,000 species worldwide. They are distributed in tropical and temperate grasslands and deserts around the world. They have hard mouthparts, narrow and tough front wings that cover the hind wings, which are very thin and suitable for flying. Their hind limbs are well developed and they are good at jumping.

3. What is the difference between locusts and grasshoppers?

Don't talk nonsense upstairs.

From the perspective of written language, locusts are a type of pest that eats crops and lives in groups. They are also called grasshoppers. Grasshoppers are pests with green or brown bodies, short antennae, and are not good at flying. From the perspective of spoken language, locusts are grasshoppers.

From the perspective of entomology, there is no difference between the two, but grasshoppers generally refer to some pointed-headed locusts (with downward-tilted head and short and flat antennae), such as the Chinese grasshopper; while locusts can refer to all insects of the superfamily Acridoidea; grasshoppers and hoppers refer to different groups. However, locusts and grasshoppers are not scientific names, but just common names, so they cannot be used to classify insects.

Almost all locusts are edible, except for some poisonous species in the tropics.

locust

Locusts belong to the family Acrididae of the class Insecta, and there are more than 4,500 species. Adults have a pair of well-developed mandibles and mainly feed on grass, especially grass plants, such as rice, wheat, sorghum, corn, and bamboo stems and leaves. Dense grass weeds and vast wastelands are ideal habitats for locusts. Wherever locusts sweep, grass plants are eaten up, and almost everything that they can bite is eaten. Swarms of locusts can turn green land into wasteland.

Locusts are good at flying and jumping. The pair of antennae on their heads are organs that combine smell and touch. Their chewing mouthparts have a pair of large jaws with teeth that can bite off the stems and leaves of plants. They have strong hind legs and rely mainly on their hind legs when jumping. When locusts fly, their hind wings play a major role. When they are stationary, their front wings cover the hind wings for protection. The female insect has a strong "ovipositor" at the end of its abdomen that can be inserted into the soil to lay eggs. Locusts lay eggs mostly on moist riverbanks, lakesides, foothills and ridges. Every 30 to 60 eggs form a group. The immature locusts that hatch from the eggs are called "nymphs" and need to shed their skin five times before they can develop into adults. After the rain, the sky clears up, which can promote the hatching of a large number of eggs. Locusts also have amazing flying ability and can fly continuously for 1 to 3 days. When locusts fly by, the sound of the locusts flapping their wings is amazing, like the howling of a storm in the ocean.

The life of a locust begins with a fertilized egg. The larvae that have just hatched from the eggs have no wings and can jump, and are called jumping nymphs. The morphology and living habits of jumping nymphs are similar to those of adults, but they are smaller in body and their reproductive organs are not fully developed, so they are also called nymphs. Nymphs gradually grow up, and when they are restricted by the exoskeleton and cannot grow any further, they shed their original exoskeleton, which is called molting. Nymphs molt five times in their lifetime. From egg hatching to the first molting, it is the first instar, and each subsequent molting increases the instar by one. After the third instar, the wing buds are prominent. After the fifth instar, they become adults that can fly. It can be seen that the individual development process of locusts goes through three stages: egg, nymph, and adult. Such a development process is called incomplete metamorphosis. The entire individual development history of an insect from a fertilized egg to an adult, and the ability to produce offspring, is called a generation. In some areas of my country, locusts can produce two generations of summer locusts and autumn locusts in one year, so there are two generations.

Grasshoppers belong to the order Locusta in the order Orthoptera. Characteristics: 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, and the midthorax and metathorax are fused and cannot move. The legs are strong, especially the muscles of the hind legs are strong and powerful, and the exoskeleton is hard, making it an expert in jumping. The tibia also has sharp saw spines, which are effective defensive weapons. The ovipositor does not have obvious protrusions, which is the biggest difference from katydids. Diet: likes to eat thick leaves, such as sweet potatoes, water spinach, etc. Metamorphosis: incomplete metamorphosis

They are different. Grasshoppers are grasshoppers and locusts are locusts. However, they look very similar.

You can eat grasshoppers, but they are not very tasty. Locusts are good to eat.

The grasshopper's limbs are scattered, and its head is pointed, so it jumps very vigorously.

No, locust is a proper name for a species of grasshopper, while grasshopper is the entire grasshopper category. Locusts are the green ones with thick legs.

Edible~~ The same thing as locusts, grasshoppers, grasshoppers