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May 6, 2010

List of 6 Venomous Spider

     I must admit I'm arachnophobic, while gathering this list I felt creepy and  my hair starting to raise just seeing this spiders. While gathering the list I find them fascinating just by reading wikipedia but still they are CREEPY. Spiders are the most abundant predators in the world and have adapted to almost any imaginable habitat except for the sea, giving rise to countless species many of which remain unknown to science. So here's the list of  6 Venomous Spider that you should not mess and they will fight back.

Violin spider
     Also known as brown recluse spider. Recluse spiders build irregular webs that frequently include a shelter consisting of disorderly threads. These spiders frequently build their webs in woodpiles and sheds, closets, beds, garages, plenum, cellars and other places that are dry and generally undisturbed. They seem to favor cardboard when dwelling in human residences, possibly because it mimics the rotting tree bark which they inhabit naturally. this species is rarely aggressive. Actual brown recluse bites are rare. The spider usually bites only when pressed against the skin, such as when tangled up within clothes, bath towels, or in bedding.
Source: wikipedia

Black House Spider

      The bite of the Black House Spider is poisonous but not lethal. Certain people bitten experience severe pain around the bite site, heavy sweating, muscular pains, vomiting, headaches and giddiness. Black and grey house spiders are known to Australia and New Zealand. In natural habitat, they are usually found on rough-barked trees, whereas inside buildings they are often found in corners, around windows and doorways, or other light sources that may attract prey insects.

Wolf Spider
     They are robust and agile hunters with good eyesight. They live mostly solitary lives and hunt alone. This spider is commonly found around the house, mostly in the garden  where you can see their habitat, sometimes with a lid or covered by leaf litter or grass woven with silk as a little fence around the rim of the burrow.  The bite of the Wolf Spider is poisonous but not lethal. Although non-aggressive, they bite freely if provoked and should be considered dangerous to humans. The bite may be very painful. First aid and medical attention should be sought as soon as possible, particularly as to children or the elderly.

Hobo Spider
          The bite of the hobo spider is initially painless, but the bite can be serious. After 24 hours, the bite develops into a blister and after 24-36 hours, the blister breaks open, leaving an open, oozing ulceration. Typically when the venom is injected, the victim will experience an immediate redness, which develops around the bite. The most common reported symptom is severe headache. Other symptoms can include nausea, weakness, fatigue, temporary memory loss and vision impairment. In any case, first aid and medical attention should be sought, if bitten, as and when any adverse health effects are observed.
        From Wikepedia: The hobo spider (Tegenaria agrestis) is a member of the genus of spiders known colloquially as funnel web spiders. It is one of a small number of spiders in North America whose bites are generally considered to be medically significant. Individuals construct a funnel-shaped structure of silk sheeting and lie in wait at the small end of the funnel for prey insects to blunder onto their webs. Hobo spiders sometimes build their webs in or around human habitations. Although this species of spider has a reputation for aggressiveness, they will normally avoid contact with humans. Most bites occur when the spider is accidentally crushed or squeezed by a human. The spider's venom is strong enough to cause considerable local pain and possibly necrosis.

Mouse Spider
     Mouse spiders are spiders of the genus Missulena, in the mygalomorph family Actinopodidae. There are 11 known species in this genus. The bite of Mouse Spider are known to cause severe illness, especially to young children - similar to Red-Back Spider. Although normally not aggressive, the male mouse spider will bite if provoked, and should be considered dangerous to humans. It has large hard fangs which can cause a deep painful bite. First aid and medical attention (ambulance) should be sought as soon as possible.  Check the some fact for Mouse Spider here.
Sources: Wikepedia

Black Widow Spider
This is the most dangerous spiderthe  The Black Widow Spider can inflict a painful bite which can be fatal, especially to the young and elderly. A small amount of venom can cause serious illness, as the poison attacks the nervous system. Systemic envenomisation usually results in headache, nausea, vomiting, abdominal pain, pyrexia and hypertension
 For the list of Black widow spider species check the wikipedia .




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