Fishing Spider with Egg Sac

Large 4-inch spider under deck in MD
Thu, Jun 18, 2009 at 5:10 PM
Found her under the deck last night in central MD; body about 1-inch; almost 4-inch leg span. Lovely leg striations. Seemed shy. No web. Not hairy like a wolf spider and legs too long and skinny. What is she? Habitat? Have never seen one before. Would prefer she lives outside!!! Released her in our back woods with creek. Fisherman spider?
goodbug
ellicott city, MD

Dear goodbug,
What a spectacular photo you have provided for us of a female Dolomedes Fishing Spider, probably Dolomedes tenebrosus, carrying her Egg Sac.