Why are spiders beneficial insects?

Generally speaking, spiders are a kind of beneficial insect for humans.

Spiders are generally carnivorous, and they eat pests as well as beneficial ones. From an agricultural point of view, because the occurrence of pests is usually relatively large, the control effect of spiders on pests is usually much greater than the killing effect on natural enemy insects (beneficial insects), therefore, spiders are often regarded as natural enemies of pests in production, that is to say, they are beneficial insects. Let's talk about spiders.

Enumerate: 1: Spiders are of many species, widely distributed, adaptable, it can live or build webs on the surface of the soil, in the soil, on trees, among grass, under rocks, burrows, water's edge, low-lying land, bushes, moss, inside and outside houses, or inhabit freshwater, coastal lake belts.

In short, spiders can be found in water, land and air. <>

2: Spiders mostly feed on insects, other spiders, and myriapods, and some spiders also feed on small animals. They can dive up to 30 centimeters to catch their prey and pounce on it.

Most spiders use the least amount of silk to weave the largest web, which acts like an air filter to trap insects that don't see filaments and don't fly well, and finally feed themselves.

3: Spider's dwelling: Safari:

Nomad spiders hunt everywhere, hunt for food, have no fixed home, do not build webs, do not burrow, and do not build nests. There are scaly arachnidae, ursoaradae and most tarantulas. Sedentary:

Some of the sedentary spiders build webs, some dig burrows, and some build nests as fixed dwellings, such as wall money, stone spiders, etc. <>

4: There are many natural predators of spiders, toads.

Centipedes, frogs, lizards.

Birds, bees prey on spiders, and some parasitic wasps.

Parasitic in spider eggs, some parasitic fly larvae develop in spider egg pouches, and small-headed mosquito fly insects almost all parasitize into spiders in the form of larvae. Spiders often use a variety of methods to ward off enemies, such as expelling venom, concealment, camouflage, and mimicry.

Protective colors, vibrations and much more. When you can't escape, and your appendage is caught by the enemy, simply cut off your appendage and walk away, anyway, the self-cut step will regenerate when molting.

Spiders are beneficial insects.

Spiders are terrestrial ecosystems.

The most abundant predatory natural enemies play an important role in maintaining the stability of agricultural and forestry ecosystems.

The spider is surrounded by a chitin exoskeleton, and the body is clearly divided into cephalothorax and abdomen, which are often connected by a thin stalk that becomes the first abdominal segment of the abdomen, and has no caudal segment or tail whip.

The spider has no compound eyes, and the cephalothorax has 6 pairs of appendages.

The first and second pairs belong to the head appendages, of which the first pair is chelicera, most of which are chelicera, most of the base is chelicera, the tip of the tip is chelicera, the teeth are tubular, and the venom secreted by the chelicera or cephalothorax is derived from this.

Spiders are the natural enemies of many agricultural and forestry pests, and play an important role in biological control, and the protection and utilization of spiders has become an important part of biological control. Spiders can be used as medicine to treat prolapsed anus, sores, and axillary odor.

and other symptoms. A few spiders such as the black widow (interspotted and red-spotted.

The venom is harmful to humans and animals.

Burrowing tarantulas of the tarantula family are distributed in Europe and Asia, and are common in Xinjiang, China, where their poison can kill humans and animals; Some spider toxins contain hemolysin, which can cause local necrosis and ulceration of wound tissue, and spread around.

From the perspective of most spiders, they should all be beneficial insects. Because spiders tend to eat flies, mosquitoes, and a lot of messy little bugs. Most of these small insects are pests, which can destroy plants and destroy the human living environment.