  
              Black House Spider
              This is not a lethal spider. Yet, its venom is  quite toxic and as a result, this arachnid constitutes a real threat to human  beings. The bite of the Black House Spider causes deep pain around the bite spot, plenty of sweating,  muscular pains, nausea, vomits and headaches. This kind of species is quick and  does not hesitate to attack if being disturbed.                | 
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              Red Back Spider
              This is a deadly spider. It attacks the nervous system and consequently, its bite causes severe pain and general illness. The Red Back poison is especially dangerous for children and adults. First Aid for this poisonous spider shall include the specific --existing-- anti-venom.                | 
          
          
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              Funnel Web Spider | «female male»
              This spider is one of the most dangerous considering  that its venom carries atraxotoxin.  This toxin causes severe general deliverance of neurotransmitters at autonomic  and neuromuscular junctions,  resulting in immediate pain, muscle twitching, weakness, nausea and vomits. The  above picture illustrates the Sidney species. The Blue Mountains and Northern  Tree Funnel-Web Spiders are quite venomous as well. Both male and female  arachnids are poisonous.                | 
            
          
              
              White Tail Spider
              The venom of this spider is of moderate toxicity. Still, it can cause nausea, swelling, redness and, in some cases, an allergic reaction considering that the White Tail Spider carries bacteria (mycobacterium ulcerans) in its lungs. The appearance of the bite is said to resemble a skin ulcer.  | 
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              Wolf Spider
              This bite of this arachnid is not a heavy poisonous one. Nevertheless, its venom may cause some adverse effects in certain victims, such as deep pain, redness and swelling. Sometimes the bitten tissue becomes black, but these reactions do not tend to last more than ten days.                | 
          
          
              
              Mouse Spider | «female male»
               This is a poisonous, non-aggressive spider. However, its bite can cause severe illness to children. The venom is similar to the Red Back’s. The injury causes deep pain considering that its fangs are huge. This spider may be found mainly in Australia.  |