Phidippus audax is a jumping spider that comes from North America. The spider is often called the daring jumping spider or bold jumping spider in English. A spider of this species will usually be black with white patterns on its abdomen. In younger spiders, the spots on the abdomen will be a orange, red or yellow colour, which will become white as the spider becomes older. The average size of an adult is between 13 and 20 millimetres and the male is slightly smaller than the female.