The Black Widow is the one with the red hourglass on it. Pictures showing bodies and what they look like.
The BlackWidow bite looks like a bruise and is painful, yet not commonly deadly.
That Brown Recluse bites start out as a dimple in the skin and if not taken care of it can result in the bottom 2 pics.
Spiders are especially dangerous for young children and the elderly.
Scorpions are a stinging insect with that tail. The smaller the scorpion the worse it is.