<P> The Sydney funnel - web spider ( Atrax robustus ) is a species of venomous mygalomorph spider native to eastern Australia , usually found within a 100 km ( 62 mi ) radius of Sydney . It is a member of a group of spiders known as Australian funnel - web spiders . Its bite is capable of causing serious injury or death in humans if left untreated . </P>
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The Sydney funnel - web spider ( Atrax robustus )