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    The bed bug is an insect that feeds on    blood and is most active at night. True to its name, the bed    bug is most common in beds. These insects are notoriously    difficult to get rid of. These parasitic insects are members of    the genus Cimex. Their bites cause skin rashes, but may also    cause psychological effects and allergic reactions.  
    Of the insects in the genus Cimex, two species cause    infestations of bed bugs:  
    There are 11 subspecies of the genus Cimex. Only four out of 90    species of bed bugs feed on humans, with the aforementioned two    preferring humans. The others are bat bugs.  
    Proper identification of bed bugs rules out confusion with    other insects such as fleas, ticks, carpet    beetles, and cockroaches. It also    depends on the life stage of the bed bugs.  
    Adult bed bugs are five to seven millimeters long  about the    size of an apple seed  and visible to the naked eye. They are    brown and long with an oval-shaped, flat body unless its    recently fed. If its fed, its body is round, reddish-brown in    color, and longer. As true insects, they have beaks with three    segments, an antenna with four parts, wings that arent for    flying, short, golden hairs, and a sweet-musty odor coming from    glands on their undersides.  
    These insects have five immature or young life stages called    nymphs before they become adults. Nymphs are smaller and either    whitish-yellow or translucent depending on whether theyve fed    recently or not.  
    Bed bug eggs are pearly-white and tiny, about the size of a    pinhead. If more than five days old, they have an eyespot    marking.  
    Rather than the identification of live bed bugs, however,    identification may instead mean recognizing an infestation.    This is usually from early signs such as bites or spots of    human blood. You may also see rusty stains from crushed bed    bugs, dark spots from excrement, or pale yellow eggs and    eggshells.  
    Early signs of bed bugs are uncomfortable, itchy nights in bed,    marks on arms and shoulders, and an unpleasant odor resembling    a wet towel. Symptoms of bed bug bites are skin rashes of red,    itchy, flat welts in zigzag lines or clusters. The bites have a    darker red spot in the middle. Some people may have allergic    reactions and develop fever, severe itching, blisters, or    hives. They can also cause secondary bacterial infections such    as impetigo, lymphangitis, and ecthyma, as well as symptoms of    psychological issues such as insomnia and anxiety.  
    Read this guide on how to identify bed bugs for more    information.  
        MainelyPhotos/Shutterstock.com      
    When it comes to evolution, it is always important to factor in    what the animal ate and what was in its diet. This is because    survival ability dictates adaptation and supports evolution    towards being more successful at obtaining that food source. It    is especially important for animals like bed bugs that require    a host to feed.  
    Specific species of bed bugs are generally known to feed on    four different types of hosts: humans, bats, water birds, and    other birds. This is because they have evolved to become very    adept at feeding off them. As researchers are finding, however,    the history of the bed bug ancestry dates back many millions of    years ago and predates some of their current hosts, like    humans. Scientists are working on solving the puzzle of how    these insects were able to make the jump between different    types of hosts over their evolution.  
    The habitat of these insects is worldwide, never in nature.    Instead, they live in mattresses, fabrics, furniture, luggage,    and pieces of wood. They hide from light and movement during    the day and come out at night, so they wait in seams of    furniture, curtain folds, electrical appliances, the junction    of the wall and ceiling, loose wall hangings and wallpaper, and    even in heads of screws. They can live singly but come together    in clusters in their habitat.  
        Bed bugs live in mattresses and fabrics.      
        whitejellybeans/Shutterstock.com      
    The diet of bed bugs is blood. Some species prefer the blood of    one mammal over another in their diet, while others absolutely    need the blood of a specific mammal to survive and lay viable    eggs. Those that humans deal with as pests in homes, apartment    buildings, and offices feed on human blood. Their bites dont    hurt at first because they inject an anesthetic while they are    feeding, which is four to 12 minutes. Plus, they feed during    the night, when it is dark and humans are asleep. Their bites    most often appear on the neck, face, arms, and hands.  
          Bed bugs feed on their hosts at night.        
          Dmitry Bezrukov/Shutterstock.com        
    To get rid of these insects more easily and quickly, noticing    the early signs of bed bug infestation or symptoms of bed bug    bites is important. Professionals first use visual inspection,    then sniffing dogs, interceptor cups, and insect monitor cards.    Average people, however, need methods that dont require a lot    of money. Read our complete guide on how to get rid of bed bugs for more    information.  
    To get rid of them, laundering and drying with heat is one    method. Vacuuming and steam treatment are others. Commercial    heating services offer whole-room heat or cold treatments to    kill them. You can either heat a room at 140 degrees Fahrenheit    for two hours or 130 degrees Fahrenheit for three hours. Cold    treatment isnt possible or practical except through commercial    heating services. If youre getting rid of infested furniture,    make sure theyre unusable so other people wont spread bed    bugs to their own homes.  
    Finally, there are chemical treatments. Pesticides can be    effective but need to be handled very carefully, and bed bugs    can become resistant. They cannot be used on items that people    come into contact with. Liquid and dry formulas should only be    applied to cracks and crevices. They may include insect growth    regulators as well as desiccants, which dry    out these insects. They must be registered by the EPA and    labeled specifically for bed bug control.  
        Bed bugs exterminators use gloves and safety glasses to        inspect infected mattress sheets and blanket bedding.      
        Michael OKeene/Shutterstock.com      
    An alternative is the use of botanical oils, which are    plant-based insecticides. Certain neem oil insecticides are    registered for bed bug control.  
    As for how to prevent them in the future, a mattress encasement    will protect your bed. It covers both the mattress as well as    the box spring. Diatomaceous earth and pheromone traps work on    everything else. It is difficult to find how to prevent bed    bugs with just one method, though, so its best to use them    together. We recommend all of the items below be used in    conjunction for the most effective bed bug prevention.  
  Adult bed bugs can be seen with the naked eye. They are small,  long, and brown, about the size of apple seeds.
  Look for signs of bed bug infestation by checking mattresses,  furniture, clothes, luggage, and electrical appliances.
  Heat treatment with hot water and high-heat drying of fabrics,  hot or cold treatment by commercial heating services, and  insecticides. As for how to prevent them, furniture covers,  diatomaceous earth, and pheromone traps work best when used  together.
  Bed bugs have been around for 115 million years, as early as  400BC. They thrive in dark, damp places but can be anywhere from  public transportation and homeless shelters to homes, apartment  buildings, offices, public libraries, and 5-star hotels.
  Diluted rubbing alcohol instantly kills all bed bugs it comes  into contact with. Insecticides, which are best professionally  applied by pest control services, also kill bed bugs instantly.  But at home, you can use heat above 120 degrees F, a clothes  iron, or laundering and dry with heat.
  They dont. They only go on your body when they feed off your  blood.
  No, they dont live anywhere on the human body.
  Yes, they are likely to hide in pillows.
  Bed bugs eat human blood.
  The greatest   differences between a baby cockroach and a bed bug include  size, shape, and antennae. Baby cockroaches are equal in size but  grow slightly larger than them in a short amount of time. Baby  cockroaches are cylindrical in shape, but bed bugs are  oval-shaped, and that difference makes it easy to distinguish  these creatures.
  The subtlest   difference between a spider beetle and a bed bug is in their  shape. While both insects are oval-shaped, the bed bug  is flatter than the spider beetle. A good picture that may help  you spot this difference is that the bed bug is typically shaped  like an apple seed, while the spider beetle looks like it is  hunch-backed.
  There are only two ways to   differentiate male bed bugs from female ones: the shape of  their abdomen and whether or not they lay eggs.
Original post:
Bed Bugs - AZ Animals