Female red-back spiders are 3rd most venomous spiders in the world. Luckily their claws are small and they are only able to inject very little of their highly toxic venom.
For this reason a red-back sting, although very painful and potentially dangerous (neurotoxic), is rarely fatal today, especially if the antivenom is used.
Female red-back spiders are quite large. Mature female's body is nearly 10mm across and her legs span nearly 5 cm (2 inches).
We do not have many red-backs here at Mt Best. It took us 5 years to find nests depicted here.
Redback spiders have quite good eyesight thanks to large eyes. This female tries to protect her nest from an intruder with a camera.