Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation. While there are many helpful insects encountered throughout the world, there are also plenty of harmful species that pass disease, destroy crops, affect animal populations and the like. Insect respiration happens without lungs.There is a system of internal tubes and sacs through which gases diffuse or are actively pumped.Air is taken in through openings on the sides of the abdomen called spiracles. Many insect larvae live in water. Bullet ants named after their painful sting. Bullet ant is the largest of all ants in the world. Animals (also referred to as metazoa) are multicellular eukaryotic organisms that form the biological kingdom Animalia . Zoopharmacognosy is a behaviour in which non-human animals apparently self-medicate by selecting and ingesting or topically applying plants, soils, insects, and psychoactive drugs to prevent or reduce the harmful effects of pathogens and toxins. Harmful Insect (害虫, Gaichū) is a 2002 Japanese drama film directed by Akihiko Shiota, starring Aoi Miyazaki. A few examples of harmful insects include (but are by no means limited to): Aphids : Aphids are like lice: they move into a garden, spread throughout all the plants, and can be hard to get rid of. Beneficial and harmful insects ECONOMIC IMPORTANCE OF INSECTS The estimated annual value of the ecological services provided by insects in the United States alone is at least $57 billion, an amount that justifies greater investment in the conservation of these services. The eggs, larvae, pupae, and adults of certain insects have been eaten by humans from prehistoric times to the present day. Oxygen gets to tissues that need it through their trachea (element 8 in diagram).. Harmful insects are insects that are harmful in any way to plants, animals or humans. In most insect legs, including the posterior four legs of a mantis, the coxa and trochanter combine as an inconspicuous base of the leg; in the raptorial legs, however, the coxa and trochanter combine to form a segment about as long as the femur, which is a spiky part of the grasping apparatus (see illustration). Wikipedia The Free Encyclopedia. The world needs insects, but there are countless ways that insects are harmful to humans and the planet. With few exceptions, animals consume organic material , breathe oxygen , are able to move , can reproduce sexually , and grow from a hollow sphere of cells, the blastula , during embryonic development . Electronic pest control is the name given to any of several types of electrically powered devices designed to repel or eliminate pests, usually rodents or insects. Some feed on humans, which can spread disease. They mostly found in rainforests of Nicaragua and Paraguay. After the bite victim would feel like being shot.In fact, the sting by a bullet ant is 30 times more painful than of a wasp or a honey bee. Español 1 604 000+ artículos. Human insect-eating is common to cultures in most parts of the world, including Central and South America, Africa, Asia, Australia, and New Zealand.Eighty percent of the world's nations eat insects of 1,000 to 2,000 species. They are small, usually less than 1/8” in size, and cause … Since these devices are not regulated under the Federal Insecticide, Fungicide, and Rodenticide Act in the United States, the EPA does not require the same kind of efficacy testing that it does for chemical pesticides. Showcase of North American insects, bugs and spiders and why they are considered harmful to the ecosystem and mankind's way-of-life. Others bite or sting us as a defense. Around 3,000 ethnic groups practice entomophagy. English 6 095 000+ articles.

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