<Li> Poikilomorpha montana Rainbow, 1914 </Li> <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> <P> The Sydney funnel - web is medium to large in size, with body length ranging from 1 to 5 cm (0.4 to 2 in). Both sexes are glossy and darkly colored, ranging from blue - black, to black, to brown or dark - plum colored . </P> <P> The Reverend Octavius Pickard - Cambridge was the first to describe the Sydney funnel - web spider, from a female specimen housed in the British Museum in 1877 . Establishing the genus Atrax, he named it Atrax robustus . The species name is derived from the Latin robustus "strong / sturdy / mature". Some years later, William Joseph Rainbow described a male Sydney funnel - web as a new species--Euctimena tibialis--from a spider he found under a log in Turramurra, and another from Mosman . He coined the scientific name from the Ancient Greek euktimenos "well built" and Latin tibialis "of the tibia", having noted its prominent tibial spur . In the same paper, he described a female Sydney funnel web as yet another species--Poikilomorpha montana--from a specimen collected from Jamison Valley and Wentworth Falls in the Blue Mountains . Its species name was derived from poikilomorphia "variety of form" referring to the eyes of different sizes, and montana "of the mountains". In February 1927, a young boy died after being bitten on the hand after playing with a big black spider on the laundry steps of his home in the Sydney suburb of Thornleigh . He fell gravely ill and perished later that evening . Public interest in spiders surged, and the police brought the dead spider to the Australian Museum, where Anthony Musgrave identified the creature as Euctimena tibialis . He examined a series of male and female spiders collected around Sydney and concluded based on anatomical similarities that Euctimena tibialis was the male Atrax robustus . Poikilomorpha montana was classified as the same species in 1988 . </P>

How big is the sydney funnel web spider
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