I want to ask about a bug!

Lice are very common parasites in animals.

More than 6,000 species of pests have been reported to damage crops worldwide. There are more than 250 kinds of rice pests, more than 1,000 fruit tree pests, more than 50 corn pests, and more than 300 warehouse pests. Armyworms, locusts, rice borers, corn borers, ground tigers, cotton aphids, wheat suckers, aphids, leafhoppers, planthoppers, scale insects, etc., are all important pests.

The losses caused by pests to agricultural production are quite staggering, with an average annual loss of l0 for crops grown in the wild and an average loss rate of 5 for indoor storage. As far as rice pests in China are concerned, more than 40 million quintals were lost in 1950. Therefore, the fight against pests and the recovery of food from their mouths is an extremely important measure in agricultural production.

In the hedges beside the sidewalk, on the garden plants in front of and behind the house, we can often find some small insects wearing armor, bright colors, colorful markings, and hemispherical shapes, which are ladybugs, commonly known as ladybugs"Sister Hua"。Ladybugs are carnivorous insects, mainly preying on small insects such as aphids and scale insects, and are the loyal iron armor of plants. In the mid-to-late nineteenth century, citrus trees in California, USA, were overgrown with scale insects, which destroyed almost all orange orchards, and medicine could not solve the problem.

Later, they thought about why the scale insects in Australia can't cause disasters. In 1886, a field trip revealed the mystery because there was a ladybug that specialized in eating this scale worm. If the Americans got the treasure, they immediately sent 139 ladybugs back to the United States, and the next year they bred to 11,000, and put them into two hundred and eight orchards, and at the end of the year, they got amazing results, and the scale insects have been eliminated by the ladybugs and are no longer harmful, and then the ladybugs settled down in the local area, multiplied continuously, and established a permanent community, which still plays an effective role in controlling the scale insects until now, and has written a glorious chapter in the history of human beings using natural enemies to control crop pests.

Since then, ladybugs have been used in the biological control of a variety of crop pests, establishing immortal feats. New Zealand, France, Egypt and China have followed suit, and they have all introduced this ladybug from the United States, and they have all received the same effect. Because this ladybug is native to Australia, people call it the Australian ladybug.

Why can the Australian ladybug eliminate the scale worm? Just study its ability to reproduce and prey on scale insects, and it's clear at a glance. It turns out that this ladybug can reproduce in a year.

In the eighth and ninth generations, each female lays 54-800 eggs, with an average of about 280 eggs. The eggs are laid on the egg bag or under the body of the scale worm, and the larvae can eat up to 46 scale worms per day, and the average can eat the whole larval stage.

There were 126 first- and second-instar scale insects. Adults can feed on up to 43 second-instar scale insects a day. The whole adult stage can eat scale worm eggs and 213 adult worms, with this speed to eat scale worms, can the latter not be eaten?

Cockroaches --- larvae.

Cockroach is a highly adaptable insect, its fecundity is also super strong, as long as there is a female cockroach with eggs will soon be flooded, personal experience, constantly change different cockroach killing drugs, where the horns are bad, the door and other places, are sprinkled with medicine, with cockroach bait, cockroach house, drug spray, multi-pronged, can be effective. Even if you can't see the traces of cockroaches, you won't stop taking the medicine to avoid a resurgence. Cockroach.

This is the first instar nymph of a cockroach. In layman's terms, it is a small cockroach that has just hatched from its eggs.

This is the sweet potato ant elephant. It is also called sweet potato small weevil.

Sweet potato weevils belong to the order Coleoptera, the family Ant Weevils. The adult is 5 to 8 mm long and has a slender body like an ant.

Except for the antennae segments, prothorax and feet, which are orange-red, the rest are blue-black with a metallic luster.

The head extends into an elongated beak, shaped like an elephant's trunk, and its chewing mouthparts are born at the end of the beak. The knee-shaped antennae are 10 segments, the male antennae are club-shaped, and the female is ovate.

The anterior thorax is twice as long as it is wide, and is retracted at the posterior part 1 3 like a neck. The two elytra are long ovate together and prominently raised. The elytra have small notches on the surface of the elytra. The foot is elongated.

The oval is oval, about millimeters long, milky white at the beginning of birth, and then pale yellow, with small notches on the surface.

Adults have weak flying ability, are afraid of direct sunlight, and have the ability to fake death. Most of the eggs are laid under the cortex of the tuber, followed by the thicker vines, and the ovipositor orifice is generally covered with gelatinous matter, and about 30 200 eggs are laid per female.

This insect is found in warm climates, heavy soils, and a lack of organic matter.

It occurs under the conditions of dry and acidic soil, extensive cultivation management, continuous cropping, etc.

Victims] Fresh sweet potatoes, sweet potato seedlings and stems, and sweet potato chips.

Parasitic plants] sweet potato, bracken, petunias, melon potato, moonshine and other spiral plants.

It should be cockroaches Cockroaches generally come out at night.

This is a type of soft-shelled turtle. A bite from a soft-shelled turtle is one of the most painful of all insects, and its saliva liquefies muscles. In some rare cases, a bite from a turtle can also cause permanent damage to the human body, so try not to go near these terrible insects as much as possible.

Those with tails may be male worms.

This is the larval morphology of the citrus butterfly, which is similar to the bean insect and can be easily misidentified. The larvae's preferred herbivores are citrus plants of the Rutaceae family and dogwoods. Of all the butterflies, the citrus butterfly is the most special because it is the only butterfly with the same name as herbivorous.

The insect is found in all citrus regions of China. Harm citrus and pepper, etc.

Citrus butterfly, also known as orange black and yellow butterfly, orange butterfly, yellow pineapple butterfly, yellow barberry butterfly, etc. It belongs to the order Lepidoptera, the family Impatidae. Adult citrus butterfly wings are light yellow-green, veined on both sides black; The outer margins of the fore and fore wings have a wide black band with a moon-shaped spot in the broad band.

The buttock angle generally has a round orange spot with black spots. Adults like to visit flowers. Wingspan 61 95mm.

Morphology Adults: wingspan 90-110 mm. There are grayish-white or yellowish-white hairs on the sides of the body.

The color of the body and wings varies with the seasons: pale black-brown in spring and dark black in summer. The pattern on the wings is yellow-green or yellowish-white, and the arrangement is the same in spring and summer, except that the anterior edge of the hindwings of the summer male butterfly has one more black spot.

There are 4-5 radial markings in the basal half of the middle chamber of the forewings, which are almost connected to the disconnection to the end, and there are 2 transverse spots in the terminal half; 1 row of crescent-shaped markings in the outer margin area; There is a row of longitudinal markings in the middle and posterior area, the outer margin is arranged very neatly and regularly, increasing from the anterior margin to the posterior margin, and there is a longitudinal band extending from the wing base to the Cu2 chamber, which is angular and curved in the middle, and the end is hooked; There is also 1 fine longitudinal stripe along the trailing edge. The markings on the basal half of the hindwings are arranged along the veins and are divided by veins; 1 row of blue spots in the sublateral margin, sometimes not very distinct; There is a row of meniscus markings on the outer margin, and 1 annular or semi-annular red markings on the hip angle. The dorsal surface of the wings is slightly lighter, and the markings in the subouter areas of the fore and hind wings are obvious, and the rest are similar to the front.

1. This is an adult.

2. This is a larvae.

3. This is a bean worm.

Larvae of fireflies or fireflies. **No details, hard to recognize.