We visited my brother-in-law in Chester last weekend just to unwind and relax. We were talking in their swimming pool area and saw this huge daddy long legs spider over my husband's chair.
According to Wikipedia, Pholcidae or commonly known as cellar spiders are a spider family in the suborder Araneomorphae. Some species, especially Pholcus phalangioides, are commonly called daddy long-legs spider, granddaddy long-legs spider, daddy long-legger, or vibrating spider. Confusion often arises because the name "daddy long-legs" is also applied to two distantly related arthropod groups: the harvestmen (which are arachnids but not spiders), and crane flies (which are insects).
For more information about this critter, visit http://en.wikipedia.org/wiki/Pholcidae