The color, shape, and size of spiders vary greatly. The Spiny-Bodied Spider, hanging from its'dragline, looks like a chip of wood. Some kinds of Comb-Footed Spiders are 0.5 millimeters long and are among the smallest spiders in to world. They look as if they are part of the flower. Insects can't see them.
Crab spiders wait for insects to approach the flower.
Then they capture their prey. Crab spiders can walk sideways and backwards like crabs. That's how they got their name. The Bolas Spider does not trap its prey in a web. Instead, it spins a line of silk with a drop of sticky silk at the end.