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.
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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