They do not depend heavily on their eyesight to catch their prey. They have a good developed feeling mechanism that makes them capable of detecting the movements in her web. Spiders detect smell with scent sensitive hairs located on their legs. A sense of taste in their mouth is missing. read more
A Spider Can Smell Anything It Touches. Spiders learn about the world around them through their senses, including their sense of smell. While a spider does not have a nose, it does have a way of identifying the scent of other things, especially prey, through chemical receptors that are located on the spider’s legs. read more
If a spider doesn't "feel" you, it can also see, smell and taste you. Schaber explained that spiders "have vision, sensitive for low light levels, but at low temporal resolution." Minute chemical-sensitive hair sensors on spider feelers, called pedipalps, can also receive odors. read more