Latrodectus- this is how the female black widow spiders are scientifically known as. Found mostly in the warmer regions of the world, they are really venomous but still rarely fatal to humans. The black widows flaunt a shiny body with black color enrolled in it. Their unique round abdomen features the red-colored shape of an hourglass. However, the hourglass shape can at times be orange-yellow as well. With their size being around one and a half inches, it won’t be wrong to call them the little giants.