Advertisement So every were i go theres this argument on true spiders and spiders in general an here it is what is the most deadliest spider ? [Edit] if tests were taken out to see which spider would cause more damage or be fatal on a human which 1 would you say would do the most damage or kill ? now personally i belive this to be a cave spider (Sicarius terrosus) but alot of people will argue it out with the black widow (Latrodectus hesperus) or the almighty funnel web spider (Atrax robustus) and rarely the forgotten tree dwelling funnel web spider (Atrax formidabilis) the brazilian wandering spider (Phoneutria nigriventer) also known as the "banana spider" and on the very very very odd occasion a wolf spider (Rhabidosa rabida) So what do you think is the most dangerouse spider and why ? again i think the cave spider there venom is very potent and only 2 bites have ever been recorded but both were left with huge huge huge damage 1 guy was immediatly amputated and anouther died to me this is a very dangerouse spider and not to be messed with !!