Brown flat insects on plants and reticular filaments, what kind of insects

This is the Rat Woman. Commonly known as tide insects.

Innocuity. As you can tell from the name, this animal prefers damp and shady places. Keeping it dry reduces its appearance.

The body is oval or oblong, flattened, slightly raised on the back, and the body can be curled into a spherical shape. Some species have a smooth back, while others have coarse grains. The head is small, inconspicuous, embedded in the anterior border of the 1st thoracic segment.

The cephalic segment has prominent lobes in the middle and on both sides. Broad chest, 7 free joints. The abdominal segments are 6 segments, the first two abdominal segments are narrower, but not significantly narrower than the chest, and each segment narrows posteriorly.

The flanks of each thoracic and abdominal segment are generally enlarged to form lateral lobes, the outer terminal angles of each thorax and abdomen on both sides protrude posteriorly and inferiorly, and the ends of the caudal segment protrude posteriorly and are triangular.

The eyes are well developed and compound eyes. The first antennae are small, with short whiskers at the apex; The second antennae are long, with 5 stalk segments and 2 whip segments. The labial base is arcuate, the large jaw has no tentacles, the cutting part is highly chitinized, generally has 2 toothed plates, there are membranous small lobes behind the tooth plates, and the molars are degenerated.

The outer lobe of the first small jaw is a masticatory leaf, and the inner lobe is narrow and long, with 2 stiff hairs; The second jaw is divided into 2 lobes at the apex, with an outer margin angular process near the base. The base of the jaw limb is broad and lamellae.

: Please describe the size of the insect [body thickness, body length] and the location and symptoms of the insect. This insect is one of the scale insects, and it can be used as a drug for killing phosphorus [scale culling, killing media, etc.], and it can be used according to the instructions. Spraying it again in 5-7 days works well.

Tide insect (watermelon insect).

Harm curly ball rat woman mainly harms tomatoes, rape, etc. Symptoms, larvae damage the leaves, resulting in a lack of trees, the heavy ones can eat the mesophyll, only the leaf veins, petioles. Adults are 9-15 mm long, brownish-grayish-blue, with yellowish-white margins on each dorsal carapace.

It mostly occurs in coastal areas, and occurs in the second year of Dalian, with adults or larvae wintering underground, and a large number of them appear in March of the following year, which is at the stage of vegetable seedlings. Diurnal and nocturnal, with negative phototaxis.

Prevention and control measures. Poison the soil, sprinkle it on the ground with deltamethrin or 20% quick-kill butadiene soil, and use 50 100 grams per mu to 10 20 kg of soil.

This ladybug-like brown bug is an insect called a female beetle. They usually live in trees and grass, but can also be found in human-inhabited cities. They have distinct brown, black, and orange spots, and an oval body and are a very popular ashwagandha bug.

This bug is characterized by its small body and great mobility. They can climb trees and other objects in a very stable manner, so they are also very active on leaves. In addition to flying, their forearms can also be used for crawling.

In addition, the female beetle can also spew a viscous liquid as a natural defense**. This liquid can make other animals feel nauseous and uncomfortable to prevent themselves from eating.

For humans, the female beetle can bring us a certain ecological and visual enjoyment. In cities, they are often mistaken for ladybugs, but they have a unique appearance and personality in their own right, and they deserve to be noticed and understood.

Overall, the female ladybug-like brown bug is a very characteristic and unique insect that lives in both natural and urban environments and is highly active and defensive. <>

There can be many reasons why the round worm is brown, but one of the reasons why it may be hail socks is that it may belong to a type of grub (qi chán). Grubs are the larvae of many species of cicadas that feed on rhizomes in the soil, causing plants to wither and wither. Grubs are usually smaller, cylindrical in shape, dark brown in color, known as "earth mites", and about the size of a thumbnail.

Grubs are more common in southern China, and their breeding conditions usually include moist soils and warm climates. This insect is more destructive to plants, and if it is in large numbers, it can cause a large area of crop loss. Therefore, we need to pay attention to prevention and control.

Measures include chemical, physical and biological control methods.

Chemical control, the use of pesticides, is relatively simple and effective, but excessive or overuse can cause environmental and health problems, so it needs to be used with caution. Physical control mainly uses manual or mechanical means, such as excavation, tillage, ploughing, air drying, sun drying, etc., but it is more time-consuming and laborious, and has higher requirements for equipment and manpower. Biological control is relatively safer, giving full play to the role of natural enemies and microorganisms to reduce the population density of pests, but this method needs to consider ecological balance to achieve long-term control purposes.

In short, the brown color of the small round worm is likely to be a kind of grub, and the grub is more destructive to plants, so we need to pay attention to the prevention and control. Control methods include chemical control, physical control and biological control. We should carefully weigh the pros and cons when choosing a method, and take corresponding control measures according to the specific situation to effectively control the harm of pests.

Morphology: The clothes moth larva is a small white caterpillar that hides in a silky bag or mesh (called a tube nest), and a spindle-shaped silk bag with a dark brown head can be seen on the wall. Adults are light yellow and photophobic.

If it is pressed to death, it will emit an unpleasant odor.

Feeding habits. Feeds on wool, hair, fur, feathers, and the larvae move slowly. It can damage textiles and endanger taxidermy in libraries or museums. (Adults do not feed).

Living environment: Adults lay their eggs in the cracks of fur, feathers, leather and wooden floors. wool or filthy silk.

The larvae spin silk into cocoons with open ends for feeding and movement. The larvae grow in the cocoon and remain in the cocoon when pupating until the adult emerges. In particular, textiles are stained with food or other contamination, and clothes moths can be seen on the collar or folds of clothing.

Cotton clothing is less susceptible).

Prevention and control in this paragraph. Prevention: The most appropriate way is to dispose of clothing when it is time to put it away. Remove all laundry from the closet, clean the folds, and expose them to the sun for a few hours. Dry cleaning and wet cleaning should be ironed and sealed in a plastic bag.

Prevention: When the wardrobe is empty, spray the wardrobe with Tao Sisong. After treatment, put the clothes back, close the wardrobe tightly, put some mothballs (naphthalene pills) on the upper layer (put in the required amount according to the instructions), and remember not to put the clothes with sludge in them, because the smell of sweat is more likely to attract clothes moths.

The museum (classic) collection should be inspected first when entering (collection), and when there is a pest, it should be treated first, and regular inspection and fumigation treatment should be carried out; Environmentally controlled facilities are kept at low temperature, low humidity and clean. Silverfish and clothing moths do not bite humans or infectious disease bacteria, easy to be ignored, after the occurrence of the occurrence of the treatment may be difficult to remove completely, in the usual time can clean the environment, newspapers are regularly collected and sorted out without accumulation, sent to the resources of the first place for centralized processing. When the season changes, clothes must be washed and dried before being put into a clean wardrobe to reduce the occurrence of harmful insects.