Category: Education/Science >> Science and Technology
Problem description:
It’s okay to buy it or not! Is it easy to maintain?
Analysis:
Lacewings, also known as long-winged crickets and yellow grasshoppers, are small needle crickets belonging to the family Orthoptera. Their appearance is very much like a shrunken golden lacewing. Because it grows in the grass, it is named lacewing; and because of its yellow-brown color, it is also called lacewing.
This insect is a small song insect with a body length of 5 to 6 mm, and its tentacles are also short, only 6 to 7 mm. The two slightly upturned tail whiskers are clearly separated, like a figure eight. The body surface is spotted, and the body color is dark brown, with a hint of clay. Its body is thicker and shorter than similar song insects, and its chest is slightly rectangular. Its head is of medium size, with several straight lines on it, and its two legs are relatively strong. Powerful and capable of jumping.
Lacewings are widely distributed throughout my country, especially in the southeast. This insect has relatively strong vitality and likes to live in the roots of grass, lawns and shrubs. It feeds on the buds and leaves of young grass, so it often moves on the grassy ground.
It can produce two generations a year in the middle and lower reaches of the Yangtze River: the first generation of adults appears between June and July, and the second generation emerges as adults between September and October. The number is large and generally Its chirping can be heard from June to November every year. Its cry is "Zhi——", and has a long drag sound, each sound can last 2 to 3 seconds. The sound is flat, but has a bit of metallic taste, which makes it sound unique. It chirps frequently on sunny days, especially at night, and less often on cloudy and rainy days.
This insect has a strong vitality and likes to live in groups. Although it moves quickly, it cannot jump far. It does not like to climb trees or grass, and does not like to dig holes in the soil.
Lacewings are never picky about food. Feed them apples, vegetable leaves, and rice grains, and they will live a normal life. However, if you can feed them with some tender grass sprouts, they will chirp louder.
There are more lacewings and they are easy to find. And because they are not on high tree trunks, but in the grass on the ground, it is not difficult to catch them. Capture the glass bottle using a funnel still covered with paper.
In fact, you don’t have to go out to catch lacewings. When you are relaxing in the countryside or in the park, you can take a bottle with a paper funnel and observe the grass and lawns along the way. When you find a sound, you can I stopped by to catch a few and take them home to play with.
Another way to catch lacewings is to drive the lacewings to Asakusa when the weather is fine in summer and the temperature is high. The lacewings will inhabit the grass with longer and denser grass. Go up peacefully and it will be much easier to capture. In late autumn, most of the grasses turn yellow and become less dense, making it easier to catch lacewings.
In areas where there are few lacewings, when capturing, you should first listen carefully to its chirping, and then drive it to an area with no or less grass to capture it.
⒈〖Insects〗
Cricket (xishuai) (Gryllulus; Gryllus) is an invertebrate, class Insecta, order Orthoptera, family Gryllidae. One is promoting weaving, and its common name is Cricket in northern China. About 2,500 species are known in the world, and about 150 species are known in China, including 50 species in Taiwan Province. (In addition, the data here are questionable: there are more than 1,400 named species in the world, and more than 30 species have been named in my country.) Several species are pests of dry crops. Most crickets are small and medium-sized, and a few are large. Yellowish brown to dark brown. The head is round, the chest is broad, and the filamentous antennae are slender and easy to break. Chewing mouthparts. Some have well-developed large jaws, which are stronger than bites. The front feet and middle feet are similar and the same length; the hind feet are well developed and good at jumping; the tail whiskers are longer. The hearing organ on the tibia of the forefoot is larger on the outside than on the inside. Males are vocal, aggressive, and sometimes kill each other. There are articulators on the male forewings, which are composed of scrapers, friction veins and articulating mirrors on the wing veins. The forewings are raised and rubbed left and right, thereby vibrating the sound mirror and producing a tone. Females are larger, with exposed needle-like or spear-like ovipositing tubes and small wings.
Crickets are burrow-dwelling, often inhabiting the surface, under masonry, in soil caves, and among grass. Night out activities. Omnivorous, eating a variety of crops, saplings, vegetables and fruits, etc. Certain behaviors in crickets can be induced by specific external stimuli. When fighting crickets, if you touch the male cricket's mouth whiskers with fine soft hairs, it will encourage it to rush towards the opponent and fight hard; if you touch its tail hairs, it will cause it to feel disgusted and jerk back with its hind legs. Kicking means resistance.
Common crickets (such as Beijing oil gourd) have one generation every year and overwinter with eggs in the soil. The eggs are laid singly, in soil at the edge of sunny fields, cemeteries, and haystacks where there are many weeds. Male insects build burrows in the earth and live together with females. It likes to live in shade, loose soil and relatively humid environment. When the insect population is too dense, they often kill each other. Peanut giant crickets have one generation per year in Guangxi. The nymphs overwinter in soil holes and are unearthed from March to April of the following year, damaging peanut seedlings. They emerge into adults in early June and continue to cause damage. In mid-to-late November, nymphs begin to overwinter. Adults and nymphs live in burrows as deep as 0.6 meters or even deeper. The newly created cave is simple, with only one escape hole. Before laying eggs, build 3 to 5 additional branch holes for eggs, and go out to search for peanut tender stems, leaves and seeds, and transport them back to the holes to store them for raising newly hatched nymphs. The newly hatched nymphs live in groups, and after a few days they go out to forage and dig separate burrows.
Crickets are important agricultural pests in Northeast China, North China, the lower reaches of the Yangtze River and South China. They damage the roots, stems, leaves, fruits and seeds of various crops, and the damage to seedlings is particularly serious. In the south, peanut giant crickets destroy 10% to 30% of peanut seedlings. They also damage corn, jute, tobacco, cotton, soybeans and cassava, often causing seedling shortages and affecting harvests.