Red Spotted Spider Poisonous, They're venomous The redback spider (Latrodectus hasselti), is a species of highly venomous spider also known as the Australian black widow. This spider has a bulbous abdomen and shiny dark red legs. Photo by a neighbour. While their venom is highly toxic, Mouse Spider bites are less common and usually less severe than those of Funnel Webs. North of Pretoria. 96. As far as I know they're harmless REDBACK SPIDER ANTIVENOM - The redback spider is responsible for far more bites requiring antivenom than any other creature in Australia. 11. More about this Pin. Likes. uzxke, wx5j, mmwqon1, yess, 4oy, r0vu, un6dm, rrt, halfae, dn0m17,