In this world we live in today, we have many beautiful and gigantic buildings occupied by people ranging from family house to personal house as well as business house to hotels and government houses, etc. People are often after their comfort and happiness and would do what it takes to achieve it. However, it is important to note that people also face the challenge of small unwanted and hated animals in their house that they often regard as agents that want to steal their comfort and happiness.  I have observed that people are willing to make sure they kill or eradicate them from their house. It is in this light that I would outline and explain the top 10 irritating and hated animals in a family house.

1. Rats

Most people hate rats and they regard rats as pests to humans especially when they are in a family house. These rats tend to cause trouble with their irritating behaviors. They are agile and good climbers, nesting high up under roofs.
Rats are various medium-sized, long-tailed rodents of the superfamily Muroidea. "True rats" are members of the genus Rattus, the most important of which to humans are the black rat, Rattus rattus, and the brown rat, Rattus norvegicus. Many members of other rodent genera and families are also referred to as rats, and share many characteristics with true rats.
Rats are typically distinguished from mice by their size. Generally, when someone discovers a large muroid rodent, its common name includes the term rat, while if it is smaller, the name includes the term mouse. The muroid family is broad and complex, and the common terms rat and mouse are not taxonomically specific. Scientifically, the terms are not confined to members of the Rattus and Mus genera, for example, the pack rat and cotton mouse. Rats have long been considered deadly pests.
Once considered a modern myth, the rat flood in India has now been verified. Indeed, every fifty years, armies of bamboo rats descend upon rural areas and devour everything in their path.Rats have long been held up as the chief villain in the spread of the Bubonic Plague,however recent studies show that they alone could not account for the rapid spread of the disease through Europe in the Middle Ages.Still, the Center for Disease Control does list nearly a dozen diseases directly linked to rats. Most urban areas battle rat infestations. Rats in New York City are famous for their size and prevalence. The urban legend that the rat population in Manhattan equals that of its human population (a myth definitively refuted by Robert Sullivan in his book "Rats") speaks volumes about New Yorkers' awareness of the presence, and on occasion boldness and cleverness, of the rodents.New York has specific regulations for getting rid of rats—multi-family residences and commercial businesses must use a specially trained and licensed exterminator.Rats have the ability to swim up sewer pipes into toilets.Places to look for rat infestations are around pipes, behind walls and near garbage cans. Effective rat control requires municipal workers and individuals to work together. When introduced into locations where rats previously did not exist they can cause a huge amount of environmental degradation. Rattus rattus, the black rat, is considered to be one of the world's worst invasive species.Also known as the ship rat, it has been carried worldwide as a stowaway on sea-going vessels for millennia and has usually accompanied men to any new area visited or settled by human beings by sea. The similar but more aggressive species Rattus norvegicus, the brown rat or wharf rat, has also been carried worldwide by ships in recent centuries.
The ship or wharf rat has contributed to the extinction of many species of wildlife including birds, small mammals, reptiles, invertebrates, and plants, especially on islands. True rats are omnivorous and capable of eating a wide range of plant and animal foods. True rats have a very high birth rate. When introduced to a new area, they quickly reproduce to take advantage of the new food supply. In particular, they prey on the eggs and young of forest birds, which on isolated islands often have no other predators and thus have no fear of predators.Some experts believe that rats are to blame for between 40 percent and 60 percent of all seabird and reptile extinctions, with 90 percent of those occurring on islands. Thus man has indirectly caused the extinction of many species by accidentally introducing rats to new areas.
They produce a lot of feces and the presence of their fecal droppings is a surefire way to spot an infestation. When droppings are seen in a family house, it is a good practice to remove those droppings and later inspect to see whether new droppings were deposited. Their noises produced and scratching in the walls or other noises from nest building may tip off the property owner.  Proper pesticides and other remedies are advised in order to eradicate them from a family house.


2. Mosquitoes
When Mosquitoes are in a family house where you reside, there would be trouble.  Mosquitoes are hated by people for the harm and pains they inflict on people. In the house, especially when sleeping at night, these mosquitoes disturb the peaceful sleep of people with their annoying and irritating sounds they make. And in our bedrooms, the persistent, whiny hum of their buzzing wings can wake the soundest of sleepers. Mosquitoes are carriers, or vectors, for some of humanity’s most deadly illnesses, and they are public enemy number one in the fight against global infectious disease.

Mosquitoes are small, midge-like flies that constitute the family Culicidae. Females of most species are ectoparasites, whose tube-like mouthparts (called a proboscis) pierce the hosts' skin to consume blood. The word "mosquito" (formed by mosca and diminutive -ito) is Spanish for "little fly". Thousands of species feed on the blood of various kinds of hosts, mainly vertebrates, including mammals, birds, reptiles, amphibians, and even some kinds of fish. Some mosquitoes also attack invertebrates, mainly other arthropods. Though the loss of blood is seldom of any importance to the victim, the saliva of the mosquito often causes an irritating rash that is a serious nuisance. Much more serious though, are the roles of many species of mosquitoes as vectors of diseases. In passing from host to host, some transmit extremely harmful infections such as malaria, yellow fever, Chikungunya, West Nile virus, dengue fever, filariasis, Zika virus and other arboviruses, rendering it the deadliest animal family in the world.Many measures have been tried for mosquito control, including the elimination of breeding places, exclusion via window screens and mosquito nets, biological control with parasites such as fungi and nematodes, or predators such as fish, copepods, dragonfly nymphs and adults, and some species of lizard and gecko.Another approach is to introduce large numbers of sterile males. Genetic methods including cytoplasmic incompatibility, chromosomal translocations, sex distortion and gene replacement have been explored. They are cheaper and not subject to vector resistance. Visible, irritating bites are due to an immune response from the binding of IgG and IgE antibodies to antigens in the mosquito's saliva. Some of the sensitizing antigens are common to all mosquito species, whereas others are specific to certain species. There are both immediate hypersensitivity reactions (types I and III) and delayed hypersensitivity reactions (type IV) to mosquito bites.Both reactions result in itching, redness and swelling. Immediate reactions develop within a few minutes of the bite and last for a few hours. Delayed reactions take around a day to develop, and last for up to a week. Several anti-itch medications are commercially available, including those taken orally, such as Benadryl, or topically applied antihistamines and, for more severe cases, corticosteroids, such as hydrocortisone and triamcinolone.
Mosquitoes prevent people from sleeping. They bite humans, leave them itchy, and buzz in their ear. Mosquitos always choose us as prey despite the fact that we have much greater opportunity to kill them because of our hands. Most of the missionaries that came to Africa were dealt with by these blood sucking killer mosquitoes. Mosquito-borne diseases cause millions of deaths worldwide. Mosquitoes transmit disease in a variety of ways. In the case of malaria, parasites attach themselves to the gut of a female mosquito and enter a host as she feeds. In other cases, such as yellow fever and dengue, a virus enters the mosquito as it feeds on an infected human and is transmitted via the mosquito’s saliva to a subsequent victim. They do no good whatsoever and only cause problems. They suck blood and give disease as well as harm people with sickness of malaria, typhoid and others.

3. House flies
House flies get into everything in the family house and they fly anywhere from Kitchen to bathroom and every other part of the house. They barf and crap on anything they touch. Also they are disease carriers with annoying BUZZ.
The housefly (also house fly, house-fly or common housefly), Musca domestica, is a fly of the suborder Cyclorrhapha. It is believed to have evolved in the Cenozoic era, possibly in the Middle East, and has spread all over the world. It is the most common fly species found in habitations. Adult insects are grey to black with four dark longitudinal lines on the thorax, slightly hairy bodies and a single pair of membranous wings. They have red eyes, and the slightly larger female has these set further apart than the male.

The female housefly usually only mates once and stores the sperm for later use. She lays batches of about 100 eggs on decaying organic matter such as garbage, carrion or feces. These soon hatch into legless white maggots which after 2 to 5 days of development transform into reddish-brown pupae, about 8 mm (0.3 in) long. Adult flies normally live for 2 to 4 weeks but can hibernate during the winter. The adults feed on a variety of liquid or semi-liquid substances beside solid materials which have been softened by saliva. They carry pathogens on their bodies and in their feces and can contaminate food and contribute to the transfer of food-borne illnesses. For these reasons they are considered pests, but have been used in the laboratory in research into ageing and sex determination. Adult houseflies grow to 8–12 millimetres (0.3–0.5 in) long. The thorax is gray or sometimes even black, with four longitudinal dark lines on the back. The whole body is covered with hair-like projections. The females are slightly larger than the males, and have a much larger space between their red compound eyes. The housefly is an object of biological research, mainly because of one remarkable quality: the sex determination mechanism. Although a wide variety of sex determination mechanisms exist in nature (e.g. male and female heterogamy, haplodiploidy, environmental factors), the way sex is determined is usually fixed within one species. The housefly is thought to exhibit several different mechanisms for sex determination, such as male heterogamy (like most insects and mammals), female heterogamy (like birds) and maternal control over offspring sex. The exact mechanism of sex determination in the housefly is, however, still unresolved.House flies are capable of carrying over 100 pathogens, such as those causing typhoid, cholera, salmonellosis, bacillary dysentery, tuberculosis, anthrax, ophthalmia, and parasitic worms. Some strains have become immune to the most common insecticides.

House flies feed on liquid or semiliquid substances beside solid material which has been softened by salivating or vomit. Because of their large intake of food they deposit feces constantly,[citation needed] which is one of the factors that makes the insect a dangerous carrier of pathogens. Although they are domestic flies, usually confined to human habitations, they can fly for several miles from the breeding place. They are active only in daytime, and rest at night, e.g., at the corners of rooms, ceiling hangings, cellars, and barns, where they can survive the coldest winters by hibernation, and when spring arrives, adult flies are seen only a few days after the first thaw.

Houseflies prevents people from enjoying their meal in peace.  House flies have made their home wherever people are. House flies aren’t biting flies; instead, they puke digestive juices on us and drink it up. The fact that they don’t bite doesn’t change the fact that they carry pathogens and thereby can cause disease. Even though house flies don’t bite, they can still get you sick. Because house flies feed on excrement and garbage, they are known to carry disease-causing bacteria and viruses. These pathogens cause diarrhea, cholera, dysentery, food poisoning, yaws, and eye infections. These pathogens can be transferred to us when the flies feed on our food. That is why getting rid of house flies is so important.

4. Cockroaches
Some people feel uncomfortable in a family house when they see cockroaches and most people see them as disgusting. They procreate and eat your food. They seem to be very disgusting to most people and really scary when it starts flying.
Cockroaches are insects of the order Blattodea, which also includes termites. About 30 cockroach species out of 4,600 are associated with human habitats. About four species are well known as pests.

The cockroaches are an ancient group, dating back at least as far as the Carboniferous period, some 320 million years ago. Those early ancestors however lacked the internal ovipositors of modern roaches. Cockroaches are somewhat generalized insects without special adaptations like the sucking mouthparts of aphids and other true bugs; they have chewing mouthparts and are likely among the most primitive of living neopteran insects. They are common and hardy insects, and can tolerate a wide range of environments from Arctic cold to tropical heat. Tropical cockroaches are often much bigger than temperate species, and, contrary to popular belief, extinct cockroach relatives and 'roachoids' such as the Carboniferous Archimylacris and the Permian Apthoroblattina were not as large as the biggest modern species.

Some species, such as the gregarious German cockroach, have an elaborate social structure involving common shelter, social dependence, information transfer and kin recognition. Cockroaches have appeared in human culture since classical antiquity. They are popularly depicted as dirty pests, though the great majority of species are inoffensive and live in a wide range of habitats around the world.
Cockroaches are creepy, but they're also very complex creatures. Cockroaches can wreak havoc on your home. They are carriers of various diseases because they are commonly found near waste deposits or in the kitchen, where food is present. Cockroaches emit unpleasant odors and may also produce sound. The Madagascar hissing cockroach is the most famous of these vocal cockroaches, although more common species may produce quieter clicking or chirping noises. Cockroaches can enter your home in many different ways, from the outside through cracks and crevices, vents, sewer and drain pipes. Cockroaches are better at hiding than you are at finding them, and their eggs are naturally protected from many over-the-counter insecticides. Without special equipment, materials and know-how, cockroach control can be a losing battle. The debris created by cast-off cockroach skins, dead bodies and droppings can aggravate allergies, especially in children and sensitive individuals.

5. Ants
Ants get into your family house and steal some bits of food you have on the ground. The little teeny sugar ants are the worst and they are so organized and smart. Ants can enter through even the tiniest cracks, seeking water and sweet or greasy food substances in the kitchen pantry or storeroom areas.
Ants are eusocial insects of the family Formicidae and, along with the related wasps and bees, belong to the order Hymenoptera. Ants evolved from wasp-like ancestors in the Cretaceous period, about 99 million years ago and diversified after the rise of flowering plants. More than 12,500 of an estimated total of 22,000 species have been classified. They are easily identified by their elbowed antennae and the distinctive node-like structure that forms their slender waists.

Ants form colonies that range in size from a few dozen predatory individuals living in small natural cavities to highly organised colonies that may occupy large territories and consist of millions of individuals. Larger colonies consist mostly of sterile, wingless females forming castes of "workers", "soldiers", or other specialised groups. Nearly all ant colonies also have some fertile males called "drones" and one or more fertile females called "queens". The colonies are described as superorganisms because the ants appear to operate as a unified entity, collectively working together to support the colony.
Ants have colonised almost every landmass on Earth. The only places lacking indigenous ants are Antarctica and a few remote or inhospitable islands. Ants thrive in most ecosystems and may form 15–25% of the terrestrial animal biomass. Their success in so many environments has been attributed to their social organisation and their ability to modify habitats, tap resources, and defend themselves. Their long co-evolution with other species has led to mimetic, commensal, parasitic, and mutualistic relationships.

Ant societies have division of labour, communication between individuals, and an ability to solve complex problems. These parallels with human societies have long been an inspiration and subject of study. Many human cultures make use of ants in cuisine, medication, and rituals. Some species are valued in their role as biological pest control agents. Their ability to exploit resources may bring ants into conflict with humans, however, as they can damage crops and invade buildings. Some species, such as the red imported fire ant (Solenopsis invicta), are regarded as invasive species, establishing themselves in areas where they have been introduced accidentally.
Ants communicate with each other using pheromones, sounds, and touch.The use of pheromones as chemical signals is more developed in ants, such as the red harvester ant, than in other hymenopteran groups. Like other insects, ants perceive smells with their long, thin, and mobile antennae. The paired antennae provide information about the direction and intensity of scents. Since most ants live on the ground, they use the soil surface to leave pheromone trails that may be followed by other ants. In species that forage in groups, a forager that finds food marks a trail on the way back to the colony; this trail is followed by other ants, these ants then reinforce the trail when they head back with food to the colony. When the food source is exhausted, no new trails are marked by returning ants and the scent slowly dissipates. This behaviour helps ants deal with changes in their environment. For instance, when an established path to a food source is blocked by an obstacle, the foragers leave the path to explore new routes. If an ant is successful, it leaves a new trail marking the shortest route on its return. Successful trails are followed by more ants, reinforcing better routes and gradually identifying the best path.
Ants use pheromones for more than just making trails. A crushed ant emits an alarm pheromone that sends nearby ants into an attack frenzy and attracts more ants from farther away. Several ant species even use "propaganda pheromones" to confuse enemy ants and make them fight among themselves.Pheromones are produced by a wide range of structures including Dufour's glands, poison glands and glands on the hindgut, pygidium, rectum, sternum, and hind tibia. Pheromones also are exchanged, mixed with food, and passed by trophallaxis, transferring information within the colony.This allows other ants to detect what task group (e.g., foraging or nest maintenance) other colony members belong to.In ant species with queen castes, when the dominant queen stops producing a specific pheromone, workers begin to raise new queens in the colony.

Some ants produce sounds by stridulation, using the gaster segments and their mandibles. Sounds may be used to communicate with colony members or with other species.
Ants attack and defend themselves by biting and, in many species, by stinging, often injecting or spraying chemicals, such as formic acid in the case of formicine ants, alkaloids and piperidines in fire ants, and a variety of protein components in other ants. Bullet ants (Paraponera), located in Central and South America, are considered to have the most painful sting of any insect, although it is usually not fatal to humans. This sting is given the highest rating on the Schmidt Sting Pain Index.

The sting of jack jumper ants can be fatal, and an antivenom has been developed for it.

Fire ants, Solenopsis spp., are unique in having a venom sac containing piperidine alkaloids.Their stings are painful and can be dangerous to hypersensitive people.
Ants perform many ecological roles that are beneficial to humans, including the suppression of pest populations and aeration of the soil. The use of weaver ants in citrus cultivation in southern China is considered one of the oldest known applications of biological control. On the other hand, ants may become nuisances when they invade buildings, or cause economic losses.

In some parts of the world (mainly Africa and South America), large ants, especially army ants, are used as surgical sutures. The wound is pressed together and ants are applied along it. The ant seizes the edges of the wound in its mandibles and locks in place. The body is then cut off and the head and mandibles remain in place to close the wound. The large heads of the soldiers of the leafcutting ant Atta cephalotes are also used by native surgeons in closing wounds.

Some ants have toxic venom and are of medical importance. The species include Paraponera clavata (tocandira) and Dinoponera spp. (false tocandiras) of South America  and the Myrmecia ants of Australia.
In South Africa, ants are used to help harvest rooibos (Aspalathus linearis), which are small seeds used to make a herbal tea. The plant disperses its seeds widely, making manual collection difficult. Black ants collect and store these and other seeds in their nest, where humans can gather them en masse. Up to half a pound (200 g) of seeds may be collected from one ant-heap.

Although most ants survive attempts by humans to eradicate them, a few are highly endangered. These tend to be island species that have evolved specialized traits and risk being displaced by introduced ant species. Examples include the critically endangered Sri Lankan relict ant (Aneuretus simoni) and Adetomyrma venatrix of Madagascar.

It has been estimated by E.O. Wilson that the total number of individual ants alive in the world at any one time is between one and ten quadrillion (short scale) (i.e. between 1015 and 1016). According to this estimate, the total biomass of all the ants in the world is approximately equal to the total biomass of the entire human race. Also, according to this estimate, there are approximately 1 million ants for every human on Earth.
Some ant species are considered as pests, primarily those that occur in human habitations, where their presence is often problematic. For example, the presence of ants would be undesirable in sterile places such as hospitals or kitchens. Some species or genera commonly categorized as pests include the Argentine ant, pavement ant, yellow crazy ant, banded sugar ant, Pharaoh ant, carpenter ants, odorous house ant, red imported fire ant, and European fire ant. Some ants will raid stored food, others may damage indoor structures, some can damage agricultural crops directly (or by aiding sucking pests), and some will sting or bite. The adaptive nature of ant colonies make it nearly impossible to eliminate entire colonies and most pest management practices aim to control local populations and tend to be temporary solutions. Ant populations are managed by a combination of approaches that make use of chemical, biological and physical methods. Chemical methods include the use of insecticidal bait which is gathered by ants as food and brought back to the nest where the poison is inadvertently spread to other colony members through trophallaxis. Management is based on the species and techniques can vary according to the location and circumstance.

Some ants are noticed in a house by people when they are bitten and the pain they cause makes people hate them and feel uncomfortable when they see any ant around them.
Ants are useful because they help decompose dead animal/insect/human bodies although they can be kind of annoying.  They like to live in people's houses.

6. Mice
Mice are smart and they are not good for a family house because they can get anywhere they want to in the house and they eat up our food.  They can squeeze themselves into anywhere they want and they are excellent climbers and very good in jumping. Mice have good visions and excellent hearing especially when they see people entering the house, they escape. The most obvious indicators of their presence are droppings.
A mouse (plural: mice) is a small rodent characteristically having a pointed snout, small rounded ears, a body-length scaly tail and a high breeding rate. The best known mouse species is the common house mouse (Mus musculus). It is also a popular pet. In some places, certain kinds of field mice are locally common. They are known to invade homes for food and shelter.

Domestic mice sold as pets often differ substantially in size from the common house mouse. This is attributable both to breeding and to different conditions in the wild. The most well known strain, the white lab mouse, has more uniform traits that are appropriate to its use in research.

The American white-footed mouse (Peromyscus leucopus) and the deer mouse (Peromyscus maniculatus), as well as other common species of mouse-like rodents around the world, also sometimes live in houses. These, however, are in other genera.

Cats, wild dogs, foxes, birds of prey, snakes and even certain kinds of arthropods have been known to prey heavily upon mice. Nevertheless, because of its remarkable adaptability to almost any environment, the mouse is one of the most successful mammalian genera living on Earth today.

Mice, in certain contexts, can be considered vermin which are a major source of crop damage, causing structural damage and spreading diseases through their parasites and feces. In North America, breathing dust that has come in contact with mouse excrement has been linked to hantavirus, which may lead to hantavirus pulmonary syndrome (HPS).

Primarily nocturnal animals, mice compensate for their poor eyesight with a keen sense of hearing, and rely especially on their sense of smell to locate food and avoid predators.

Mice build intricate burrows in the wild. These burrows typically have long entrances and are equipped with escape tunnels or routes. In at least one species, the architectural design of a burrow is a genetic trait.Many people buy mice as companion pets. They can be playful, loving and can grow used to being handled. Like pet rats, pet mice should not be left unsupervised outside as they have many natural predators, including (but not limited to) birds, snakes, lizards, cats, and dogs. Male mice tend to have a stronger odor than the females. However, mice are careful groomers and as pets they never need bathing. Well looked-after mice can make ideal pets.
The disease mice spread via urine in a family house and of which they communicate with, and therefore leave a lot of lying around and feces-not to mention the extensive damage they can do when they put their teeth to something-is no joke. When you want to naturally get rid of mice, a cat is your best friend. If you have a pest problem, and you have the means to have a cat, go for it! Just remember, the cat will also be a part of the family-not just something you use for a mouse problem. And there’s always the possibility you end up with one that isn’t a good mouser, in which case, you’ve just gained another wonderful member of the family.


7. Cicadas

They sit on the door until someone kills them, yet they don't fly away when someone is coming. Some people don’t hear or see cicadas in their house but depending on where you are living.
The cicadas (/sɪˈkɑːdə/ or /sɪˈkeɪdə/) are a superfamily, the Cicadoidea, of insects in the order Hemiptera (true bugs). They are in the suborder Auchenorrhyncha, along with smaller jumping bugs such as leafhoppers and froghoppers. It is divided into the Tettigarctidae, with two species in Australia, and Cicadidae, with more than 1,300 species described from around the world; many undescribed species remain.

Cicadas have prominent eyes set wide apart, short antennae, and membranous front wings. They have an exceptionally loud song, produced not by stridulation, but by vibrating drumlike tymbals rapidly. The earliest known fossil Cicadomorpha appeared in the Upper Permian period; extant species occur all around the world in temperate to tropical climates. They typically live in trees, feeding on sap, and laying their eggs in a slit in the bark. Most cicadas are cryptic, singing at night to avoid predators. The periodic cicadas spend most of their lives as underground nymphs, emerging only after 13 or 17 years, which may reduce losses by starving their predators and eventually emerging in huge numbers which overwhelm and satiate any remaining predators.

Cicadas have been featured in literature since the time of Homer's Iliad, and as motifs in art from the Chinese Shang dynasty. They have been used in myths and folklore to represent carefree living and immortality. Cicadas are eaten in various countries, including China, where the nymphs are served deep-fried in Shandong cuisine.  Cicadas are commonly eaten by birds and sometimes by squirrels, as well as bats, wasps, mantises, spiders and robber flies. In times of mass emergence of cicadas, various amphibians, fish, reptiles, mammals and birds change their foraging habits so as to benefit from the glut. Newly hatched nymphs may be eaten by ants, and nymphs living underground are preyed on by burrowing mammals like moles. In Australia, cicadas are preyed on by the Australian cicada killer wasp (Exeirus lateritius), which stings and stuns cicadas high in the trees, making them drop to the ground where the cicada-hunter mounts and carries them, pushing with its hindlegs, sometimes over a distance of a hundred metres, until they can be shoved down into its burrow, where the numb cicada is placed onto one of many shelves in a "catacomb", to form the food-stock for the wasp grub that grows out of the egg deposited there.

Several fungal diseases infect and kill adult cicadas while another entomopathogenic fungus, Cordyceps spp., attacks nymphs. Massospora cicadina specifically attacks the adults of periodical cicadas, the spores remaining dormant in the soil between outbreaks.Cicadas were eaten in Ancient Greece, and are consumed today in China, both as adults and (more often) as nymphs, in Malaysia, Burma, Latin America, and central Africa. Female cicadas are prized for being meatier. Shells of cicadas are employed in traditional Chinese medicines.

In 2011, cicadas were incorporated into a single batch of ice cream in Columbia, Missouri, at Sparky's. The ice creamery was advised by the public health department against making a second batch, a suggestion with which store owners complied. Cicadas feed on sap, and are benign to humans; they do not bite or sting in a true sense, but may occasionally mistake a person's arm for a plant limb and attempt to feed.

Cicadas are not major agricultural pests but in some outbreak years, trees may be overwhelmed by the sheer numbers of females laying their eggs in the shoots. Small trees may wilt and larger trees may lose small branches. Although in general, the feeding activities of the nymphs do little damage, during the year before an outbreak of periodic cicadas, the large nymphs feed heavily and plant growth may suffer.Some species have turned from wild grasses to sugar cane, and this has affected the crop adversely, and in a few isolated cases, females have oviposited on food crops such as date palms, grape vines, citrus trees, asparagus and cotton.

Cicadas sometimes cause damage to amenity shrubs and trees, mainly in the form of scarring left on tree branches where the females laid their eggs. Branches of young trees may die as a result.

 They are hated by most people because of their annoying noise.  Their singing is extremely annoying. Cicadas are the only insects capable of producing such a unique and loud sound.   Shut up! They sing, then stop, then sing again for a long time. Cicadas usually sing during the heat of the day. Cicadas are probably best known for their buzzing and clicking noises, which can be amplified by multitudes of insects into an overpowering hum. The sounds vary widely and some species are more musical than others.


8. Bed Bugs
Bed bugs can travel on luggage and enter your home unknowingly. Bedbugs do not fly, but they can move quickly over floors, walls, and ceilings. They are not fatal but they stink like ripen raspberries and they populate pretty quick. Even there are many individuals of them, it's hard to find them and their shelters. They do not just bite one spot when they suck blood, they bite many times in order to find juiciest body part of yours which makes you feel really itch.

Bed bugs are parasitic insects of the cimicid family that feed exclusively on blood. Cimex lectularius, the common bed bug, is the best known as it prefers to feed on human blood. Other Cimex species specialize in other animals, e.g., bat bugs, such as Cimex pipistrelli (Europe), Cimex pilosellus (western US), and Cimex adjunctus (entire eastern US).

The name bed bug derives from the preferred habitat of Cimex lectularius: warm houses and especially near or inside beds and bedding or other sleep areas. Bed bugs are mainly active at night, but are not exclusively nocturnal. They usually feed on their hosts without being noticed.

A number of adverse health effects may result from bed bug bites, including skin rashes, psychological effects, and allergic symptoms.Bed bugs are not known to transmit any pathogens as disease vectors. Certain signs and symptoms suggest the presence of bed bugs; finding the adult insects confirms the diagnosis.

Bed bugs have been known as human parasites for thousands of years. At a point in the early 1940s, they were mostly eradicated in the developed world, but have increased in prevalence since 1995, likely due to pesticide resistance, governmental bans on effective pesticides, and international travel. Because infestation of human habitats has begun to increase, bed bug bites and related conditions have been on the rise as well.
Diagnosis of an infestation involves both finding bed bugs and the occurrence of compatible symptoms.Treatment involves the elimination of the insect (including its eggs) and taking measures to treat symptoms until they resolve.

Bed bug bites or cimicosis may lead to a range of skin manifestations from no visible effects to prominent blisters. Effects include skin rashes, psychological effects, and allergic symptoms.

Although bed bugs can be infected with at least 28 human pathogens, no studies have found that the insects are capable of transmitting any of these to humans. They have been found with methicillin-resistant Staphylococcus aureus (MRSA) and with vancomycin-resistant Enterococcus faecium (VRE), but the significance of this is still unknown.

Investigations into potential transmission of HIV, MRSA, hepatitis B, hepatitis C, and hepatitis E have not shown that bed bugs can spread these diseases. However, arboviruses may be transmissible.
Natural enemies of bed bugs include the masked hunter insect (also known as "masked bed bug hunter"), cockroaches, ants, spiders (particularly Thanatus flavidus), mites, and centipedes (particularly the house centipede Scutigera coleoptrata). However, biological pest control is not considered practical for eliminating bed bugs from human dwellings.

Bed bugs are disgusting and annoying and leave a human itchy. They are little monsters. Bedbugs are active mainly at night and usually bite people while they are sleeping. They feed by piercing the skin and withdrawing blood through an elongated beak. The bugs feed from three to 10 minutes to become engorged and then crawl away unnoticed. Most bedbug bites are painless at first, but later turn into itchy welts. Unlike flea bites that are mainly around the ankles, bedbug bites are on any area of skin exposed while sleeping. Bed bugs are found in cracks and crevices, including mattress seams, sheets, furniture, behind baseboards, electrical outlet plates and picture frames. Often found in hotels, where they can travel from room to room and in visitors’ luggage or other personal belongings such as purses and briefcases.
Bedbugs may enter your home undetected through luggage, clothing, used beds and couches, and other items. Their flattened bodies make it possible for them to fit into tiny spaces, about the width of a credit card. Their initial hiding places are typically in mattresses, box springs, bed frames, and headboards where they have easy access to people to bite in the night. Over time, however, they may scatter through the bedroom, moving into any crevice or protected location. They may also spread to nearby rooms or apartments.


9. Spiders
People hate spiders for the webs they make in the house. While many say spiders are freaky creatures who want to kill us all but it can be said that a world without spiders would be a living hell. Insects would eat our crops and starve us. They feed on insects, other spiders and any other prey they are able to subdue. Some spiders like moisture and are found in basements, crawl spaces and other damp parts of buildings. Others like dry, warm areas such as sub floor air vents, upper corners of rooms and attics. They hide in dark areas.
Spiders (order Araneae) are air-breathing arthropods that have eight legs and chelicerae with fangs that inject venom. They are the largest order of arachnids and rank seventh in total species diversity among all other orders of organisms. Spiders are found worldwide on every continent except for Antarctica, and have become established in nearly every habitat with the exceptions of air and sea colonization. As of November 2015, at least 45,700 spider species, and 113 families have been recorded by taxonomists.However, there has been dissension within the scientific community as to how all these families should be classified, as evidenced by the over 20 different classifications that have been proposed since 1900.

Anatomically, spiders differ from other arthropods in that the usual body segments are fused into two tagmata, the cephalothorax and abdomen, and joined by a small, cylindrical pedicel. Unlike insects, spiders do not have antennae. In all except the most primitive group, the Mesothelae, spiders have the most centralized nervous systems of all arthropods, as all their ganglia are fused into one mass in the cephalothorax. Unlike most arthropods, spiders have no extensor muscles in their limbs and instead extend them by hydraulic pressure.

Their abdomens bear appendages that have been modified into spinnerets that extrude silk from up to six types of glands. Spider webs vary widely in size, shape and the amount of sticky thread used. It now appears that the spiral orb web may be one of the earliest forms, and spiders that produce tangled cobwebs are more abundant and diverse than orb-web spiders. Spider-like arachnids with silk-producing spigots appeared in the Devonian period about 386 million years ago, but these animals apparently lacked spinnerets. True spiders have been found in Carboniferous rocks from 318 to 299 million years ago, and are very similar to the most primitive surviving suborder, the Mesothelae. The main groups of modern spiders, Mygalomorphae and Araneomorphae, first appeared in the Triassic period, before 200 million years ago.

A herbivorous species, Bagheera kiplingi, was described in 2008, but all other known species are predators, mostly preying on insects and on other spiders, although a few large species also take birds and lizards. Spiders use a wide range of strategies to capture prey: trapping it in sticky webs, lassoing it with sticky bolas, mimicking the prey to avoid detection, or running it down. Most detect prey mainly by sensing vibrations, but the active hunters have acute vision, and hunters of the genus Portia show signs of intelligence in their choice of tactics and ability to develop new ones. Spiders' guts are too narrow to take solids, and they liquefy their food by flooding it with digestive enzymes. They also grind food with the bases of their pedipalps, as arachnids do not have the mandibles that crustaceans and insects have.

Male spiders identify themselves by a variety of complex courtship rituals to avoid being eaten by the females. Males of most species survive a few matings, limited mainly by their short life spans. Females weave silk egg-cases, each of which may contain hundreds of eggs. Females of many species care for their young, for example by carrying them around or by sharing food with them. A minority of species are social, building communal webs that may house anywhere from a few to 50,000 individuals. Social behavior ranges from precarious toleration, as in the widow spiders, to co-operative hunting and food-sharing. Although most spiders live for at most two years, tarantulas and other mygalomorph spiders can live up to 25 years in captivity.

While the venom of a few species is dangerous to humans, scientists are now researching the use of spider venom in medicine and as non-polluting pesticides. Spider silk provides a combination of lightness, strength and elasticity that is superior to that of synthetic materials, and spider silk genes have been inserted into mammals and plants to see if these can be used as silk factories. As a result of their wide range of behaviors, spiders have become common symbols in art and mythology symbolizing various combinations of patience, cruelty and creative powers. An abnormal fear of spiders is called arachnophobia.
Spider venoms may be a less polluting alternative to conventional pesticides, as they are deadly to insects but the great majority are harmless to vertebrates. Australian funnel web spiders are a promising source, as most of the world's insect pests have had no opportunity to develop any immunity to their venom, and funnel web spiders thrive in captivity and are easy to "milk". It may be possible to target specific pests by engineering genes for the production of spider toxins into viruses that infect species such as cotton bollworms.

The Ch'ol Maya use a beverage created from the tarantula species Brachypelma vagans for the treatment of a condition they term 'tarantula wind', the symptoms of which include chest pain, asthma and coughing.

Possible medical uses for spider venoms are being investigated, for the treatment of cardiac arrhythmia, Alzheimer's disease,strokes, and erectile dysfunction.The peptide GsMtx-4, found in the venom of Brachypelma vagans, is being researched to determine whether or not it could effectively be used for the treatment of cardiac arrhythmia, muscular dystrophy or glioma. Because spider silk is both light and very strong, attempts are being made to produce it in goats' milk and in the leaves of plants, by means of genetic engineering.

Spiders can also be used as food. Cooked tarantula spiders are considered a delicacy in Cambodia, and by the Piaroa Indians of southern Venezuela – provided the highly irritant hairs, the spiders' main defense system, are removed first.

Spiders are capable of producing silk that is elastic, adhesive and strong. This silk is used to spin webs as well as to construct egg sacs and line spider dwellings. The size and shape of spider webs vary by species: some are orb-shaped, while others are funnel-shaped; some webs are orderly, while others appear haphazard. Some spider species live in burrows rather than webs, while others are free ranging and take refuge in crevices. Spiders commonly enter homes in two primary ways: entering through open, poorly screened windows and doors and through cracks and gaps around door and window frames. Most of the time, spiders come inside the home looking for prey. The other common method of entry is accidentally hitchhiking inside boxes, on outdoor items and numerous other things that are brought inside a home or business.


10. Moths
Most people in this world hate moth for the damage they cause on their clothes. Most moths and caterpillars are considered nuisance pests.  Moths comprise a group of insects related to butterflies, belonging to the order Lepidoptera. Most lepidopterans are moths; and there are thought to be approximately 160,000 species of moth, many of which are yet to be described. Most species of moth are nocturnal, but there are also crepuscular and diurnal species.
While the butterflies form a monophyletic group, the moths, comprising the rest of the Lepidoptera, do not. Many attempts have been made to group the superfamilies of the Lepidoptera into natural groups, most of which fail because one of the two groups is not monophyletic: Microlepidoptera and Macrolepidoptera, Heterocera and Rhopalocera, Jugatae and Frenatae, Monotrysia and Ditrysia.

Although the rules for distinguishing moths from butterflies are not hard and fast, one very good guiding principle is that butterflies have thin antennae and (with the exception of the Hedylidae Family) have small balls or clubs at the end of their antennae. Moth antennae can be quite varied in appearance, but in particular lack the club end. The divisions are named by this principle: "club-antennae" (Rhopalocera) or "varied-antennae" (Heterocera).
Nocturnal insectivores often feed on moths; these include some bats, some species of owls and other species of birds. Moths also are eaten by some species of lizards, cats, dogs, rodents, and some bears. Moth larvae are vulnerable to being parasitized by Ichneumonidae.

Baculoviruses are parasite double-stranded DNA insect viruses that are used mostly as biological control agents. They are members of the Baculoviridae, a family that is restricted to insects. Most baculovirus isolates have been obtained from insects, in particular from Lepidoptera.

There is evidence that ultrasound in the range emitted by bats causes flying moths to make evasive maneuvers because bats eat moths. Ultrasonic frequencies trigger a reflex action in the noctuid moth that causes it to drop a few inches in its flight to evade attack. Tiger moths also emit clicks which can foil bats' echolocation.
The most common ways that moths get inside are by flying through an open door or window and being unintentionally brought inside via infested food products, infested plants, on infested fabric items and on our clothing when a moth lands on a piece of our clothing and is unknowingly brought inside a home or business. Moths vary dramatically in appearance and size depending on the species. Some are massive and others tiny. Certain species of moths are brilliant with metallic colors while others are drab in browns or grey. They avoid light and are most commonly found in dark locations such as basements, attics and closets. Within these locations, moths can be found in the folds of fabrics or hiding in corners. Moths are capable of infesting a home long before their populations are noticed. As a result, substantial damage can occur to clothing or furnishings. Webbing clothes moth larvae, not the adults, are responsible for destroying clothing. They prefer animal-based fabrics. Moths may consume sweaters, coats, blankets, carpets, decorative items, comforters, pillows and toys. They prefer not to feed on synthetic fibers, but will consume blended and stained fabrics. To prevent or minimize moth entry, inspect all food products brought into the home. This is particularly important with pet foods and grain-based products. Be sure to inspect clothing, furniture, fabrics and rugs and plants for the immature or the adult moth stages before bringing them inside a home or business. Another effective way to limit moth entry into a structure is to use outdoor lighting only when necessary since lights are a significant moth attractor around the home at night.