Araneus diadematus is known by many names including the common garden spider, European garden spider, cross orb-weaver, diadem spider, and cross spider.
The American House Spider, or Parasteatoda tepidariorum (A.K.A. the common house spider), is an arachnid similar in size and body shape to the Black Widow.
The Sowbug killer spider is quite a gnarly-looking arachnid. Their diet consists exclusively of sow bugs, also known as roly-polys. They are found many places.