Why is it that among so many ladybugs, only the seven star ladybug is a beneficial insect?

One, the seven-star ladybug.

Seven-star ladybug is a beneficial insect, and adults can prey on wheat aphid, cotton aphid, locust aphid, peach aphid, and scale insects.

Pests such as ticks can greatly reduce the damage of trees, melons and fruits and various crops to pests, and are known as "live pesticides" and are widely distributed throughout China.

2: Heterochromatic ladybugs: The adults and larvae of heterochromatic ladybugs can prey on cotton bollworms in addition to cotton aphids.

The eggs and young larvae, the adults prey on about 70 cotton bollworm eggs on average every day, the larvae do not prey on the eggs of cotton bollworm, and the first hatching larvae of cotton bollworm are 70 adults and 69 are the fourth instar larvae.

Three: Six ladybugs: Six ladybugs, also known as six-spotted moon ladybugs, the larvae have black body color, white longitudinal spots on the back of the body, and feed on a variety of aphids.

There are more than 20 species of adult spot patterns, but the markings on the dorsal plate of the anterior thorax are relatively stable, generally distributed in flat to low-altitude mountainous areas, and are commonly found on plants with aphids, which can be seen throughout the year.

Four: Tortoise ladybug: Tortoise ladybug is a beneficial insect that preys on aphids and leafhoppers.

Planthoppers, etc., prey on the eggs of aphids, cotton bollworms and other pests and young young nymphs in cotton fields.

At the same time, 7 September is also an important natural enemy in the orchard, feeding on aphids, leafhoppers, planthoppers and other pests in the apple orchard.

Five: Ladybug scapula: Ladybug scapula scapula adults are millimeters long, ovoid or long ovate around the periphery, hemispherical on the back, flat on the ventral surface, scarce in number, prey on scale insects, and adults, larvae prey on sugarcane cotton aphids, distributed in Guangxi, Fujian, Taiwan, Guangdong, Guizhou, Yunnan and other places.

Six: Australian ladybug: Australian ladybug is an agricultural beneficial insect, native to Australia, like shade environment, has the habit of suspended animation, often concentrates on feeding on the female adult of the blowing scale when it hatches, and gradually disperses later.

At present, more than 50 countries have introduced Australian ladybugs to control the blowing scale, and China has introduced the species since 1955 to carry out research and utilization, which has effectively controlled the occurrence of the blowing scale, and is known to be distributed in the citrus producing areas in the south.

The most common ladybug species is the two-star ladybug.

Six-star ladybugs, seven-star ladybugs, twelve-star ladybugs, thirteen-star ladybugs, red star ladybugs, big red ladybugs, etc., these are all beneficial insects.

There are only eleven-star ladybugs and twenty-eight-star ladybugs.

It belongs to pests.

Because the seven-star ladybug can eat a lot of pests, after having the seven-star ladybug, it can reduce the damage of some pests to crops and melons. Therefore, the seven-star ladybug is people's"Good helper"。

What are the characteristics of the seven-star ladybug? Why is it said to be a beneficial insect and is called a live pesticide.

Because other ladybugs feed on leaves, but the seven-star ladybug eats insects, and it can eat the insects on crops, so it's called a beneficial insect.

Because the seven-star ladybug is the nemesis of pests. And it has a strong ability to defend itself. Pests can be caught and crop damage can be reduced.

<> "Why Only Seven-Star Ladybugs Are Beneficial Insects."

There are many ladybugs with "stars", such as two-star, six-star, and seven-star are beneficial insects, but eleven-star ladybugs and twenty-eight-star ladybugs are pests.

The shell of the Eleven-Star Ladybug is similar to that of the Seven-Star Ladybug, both of which have a red skin dotted with black spots, but each half of its wings has five spots and a spot in the middle of the wings. This eleven-star ladybug is the nemesis of the Solanaceae family, lurking on the surface of the Solanaceae when they are still larvae, feeding on the leaves that take on a basket-like web in the sun.

Adult ladybugs are more harmful to Solanaceae, they will gnaw the leaves until only the veins remain, causing the whole plant to die, and the fruits of the plants that survive are hard, rough, and bitter in taste, making them inedible.

Twenty-eight star scoops are also called sour pulp ladybugs, potato ladybugs, and their parasitic plants are generally potatoes and tomatoes, as well as cucumbers, winter melons and other cucurbitaceous vegetables.

Twenty-eight star ladybugs live together in groups, and a large number of larvae of twenty-eight star ladybugs can be found in some stone crevices and tree holes. They spend the winter in this warm, leeward and sunny place, and come out to nibble on fruits and vegetables in the spring of the following year.

Like the eleven-star ladybug, the twenty-eight-star ladybug also gnaws on the leaves and fruits to nibble on the side of the plant and eat it away, and the originally sweet and delicious melons and fruits become extremely sour, seriously affecting the quality and yield of vegetables and fruits.

Everything in nature has a good side and a bad side, and living things restrain each other and restrain each other, and together they form a complete nature. In daily life, when encountering seven-star ladybugs, don't be afraid of Yundong because of their self-preservation behavior, they will not harm humans, and we naturally do not need to hurt them. But when we encounter typical pests such as the eleven-star ladybug and the twenty-eight-star ladybug, we must eliminate them and protect the food we need for daily life.

Adult ladybugs can prey on wheat aphids, cotton aphids, locust aphids, peach aphids, scale insects, ticks and other pests, which can greatly reduce the damage of trees, melons and fruits and various crops from pests, and are called "live pesticides". The seven-star ladybug is widely distributed throughout our country. In the southern part of North China, it is commonly known as "Sister Hua".

The seven-star ladybug has a life span of nearly 80 days and can feed on tens of thousands of aphids. Toxic seven-star ladybug is non-toxic and harmless to humans, animals and natural enemies, has no residue, and does not pollute the environment. The seven-star ladybug has a strong ability to defend itself, and although its body is only the size of a soybean, many strong enemies are helpless against it.

There is a "chemical**" on the joints of its 3 pairs of thin feet, and when it encounters an enemy attack, it secretes an extremely unpleasant yellow liquid, which makes the enemy retreat and flee in a hurry because he can't stand it.

Adult ladybugs can prey on wheat aphids, cotton aphids, locust aphids, peach aphids, scale insects, ticks and other pests, which can greatly reduce the damage of trees, melons and fruits and various crops from pests, and are called "live pesticides". The seven-star ladybug is widely distributed throughout our country. In the southern part of North China, it is commonly known as "Sister Hua".

The characteristics and abilities of the seven-star ladybug are dismantled.

The seven-star ladybug has a strong ability to defend itself, and although its body is only the size of a soybean, many strong enemies are helpless against it. There is a chemical ** on the joints of the 3 pairs of thin feet of the seven-star ladybug, and when attacked by enemies, the foot joints can secrete an extremely unpleasant yellow liquid, so that the enemy can't stand it and flee in a hurry.

What are the developmental stages of the seven-star ladybug.

The seven-star ladybug has to go through four different stages of development: egg, larva, pupa and adult, and the development period of each insect state is mainly affected by food and temperature. Ladybird is a migratory insect, and the foraging behavior of adults and larvae belongs to the transition between wide-area search and regional centralized search behavior.

Definitely. Common ladybugs include two-star ladybug, six-star ladybug, seven-star ladybug, twelve-star ladybug, thirteen-star ladybug, red star ladybug, big red ladybug, etc., all of which are beneficial insects. The larvae of these ladybugs can also prey on aphids, scale insects, ticks, etc., and other small insects.

Only the eleven-star ladybug and the twenty-eight-star ladybug are pests. There is also a simple way to identify it, that is, all the surface of the elytra is very delicate, particularly smooth, and shining, it belongs to beneficial insects. Anyone who has dense fine hairs on its elytra is a pest.

It doesn't matter what color their elytra are or what markings they have.