Red back jumping spider

Related information
The Red-backed Jumping Spider
Phidippus johnsoni - Wikipedia
In pictures: Arizona's jumping spiders

Related books
National Audubon Society Field Guide to Insects and Spiders

Red back jumping spider or Phidippus johnsoni
Red back jumping spider, Phidippus johnsoni

Red back jumping spider with teal chelicerae

Picture of a red backed jumping spider waiting to ambush an insect
Red back jumping spider waiting in ambush on gaillardia