My face encountered several spider webs while I was mowing lawn today but not all spiders build webs as some just lie in wait for lunch to wander into their hunting range. The Goldenrod Crab Spider will their color to yellow or white, depending on which flower they are hunting so they are often on daisies, sunflowers, and goldenrod. These spiders change color by secreting a liquid yellow pigment into the outer cell layer of the body but the process is not a quick change as it take 10 to 25 days to go from white to yellow but the opposite color change takes about six days. Since the daises are fading as summer rolls on, I imagine most are changing to yellow to match the later summer flowers.
Waiting to Attack
