These spiders are typically dark brown or a shiny black in colour some may have a pair of red spots or have no marking at all.
Black Widow spiders can be found on every continent of the world except Antarctica.
There are more species and subspecies depends on which part of the world they are.
While some species are more aggressive, most are not, many bites to humans are defensive delivered when a spider gets unintentionally squeezed or pinched.
Black widow bite is not deadly but it is very painful, symptoms last three to four days but may take up to ten days.
Symptoms are severe muscle pain, abdominal cramps and muscle spasms.
Death occurs rarely but is very painful.
