Which spider is the most deadliest/venomous in the world?

The Sydney funnel-web spider (Atrax robustus) is the most dangerous spider on the planet. This species is native to eastern Australia. The Sydney funnel-web spider is considered deadly because its venom kills within 15 minutes.

A male Sydney funnel-web spider also has more powerful venom than the female; the male is often found roaming alone while the female lives in colonies of around 100 spiders.

At least 40 different species of Sydney funnel-web spiders exist worldwide. Although some of these species are not venomous, their bites should not be ignored because some of them may contain slow-acting venom.

Sydney Funnel-Web exhibit color variation, ranging from black to brown, with a shiny thorax and head. Their cephalothorax is covered by an almost hairless, smooth, and glossy carapace. Sydney funnel-web spiders are often mistaken for tarantulas because they strongly resemble them.

Sydney funnel-web spiders have larger venom sacs and fangs. The fangs point straight down without crossing each other. They also have protruding microorganisms at the rear abdominal end. You will notice a mating spur projection between the male’s second pair of legs. Both males and females have velvety hair covering their abdomens.