The Black Widow Spider is identified by a reddish orange colored mark that is shaped like an hourglass on their underside.
According to National Geographic, the venom of a Black Widow is 15 times stronger than the venom of a rattlesnake.
Found this creepy crawler hanging out in the clay pot in the Town Square Media back yard. I know it's difficult to see from the picture, but it looks to me like it has a red hourglass on its hind end (looks like a big red blob in the photo)...