▁is ▁a ▁member ▁of ▁the ▁sub family ▁At rac inae , ▁the ▁Australian ▁fun nel - web ▁sp iders , ▁a ▁number ▁of ▁whose ▁species ▁produce ▁ven om ▁that ▁is ▁dangerous ▁to ▁humans . ▁The ▁generic ▁name ▁is ▁based ▁on ▁the ▁Il la war ra ▁region ▁where ▁the ▁sp ider ▁was ▁found . ▁The ▁species ▁name ▁wish art i ▁hon ours ▁Gra eme ▁W ish art , ▁who ▁collected ▁many ▁my gal omorph ▁sp iders ▁in ▁that ▁region . ▁ ▁Description ▁M ature ▁males ▁have ▁an ▁overall ▁body ▁length ▁of ▁about ▁, ▁with ▁the ▁car ap ace ▁and ▁ab d omen ▁being ▁of ▁roughly ▁equal ▁length . ▁The ▁car ap ace ▁length ▁aver ages ▁about ▁, ▁with ▁a ▁range ▁of ▁. ▁The ▁fourth ▁leg ▁is ▁the ▁longest ▁at ▁about ▁ ▁in ▁total . ▁Ind ividual s ▁are ▁basically ▁brown , ▁with ▁an ▁obvious ▁pattern ▁of ▁narrow ▁che v rons ▁on ▁the ▁ab d omen . ▁Fem ales ▁are ▁of ▁a ▁similar ▁size ▁and ▁overall ▁appearance . ▁They ▁are ▁said ▁to ▁have ▁an ▁" ant - like " ▁sm ell . ▁ ▁M ales ▁differ ▁from ▁those ▁of ▁the ▁other ▁members ▁of ▁the ▁sub family ▁At rac inae ▁by ▁the ▁presence ▁of ▁a ▁broad ▁row ▁of ▁sp ines ▁in ▁the ▁middle ▁of ▁the ▁unders ide ▁( vent ral ▁side ) ▁of ▁the ▁tar si ▁of ▁all ▁four ▁legs . ▁Fem ales ▁can ▁be ▁distinguished ▁by ▁the ▁first ▁leg , ▁which ▁la cks ▁sp ines , ▁has ▁the ▁met at ars us ▁partly ▁f used