I'm assuming this must be a starved one, as it has a very strangely shaped abdomen.

it really needs water and food.

I agree with Dictynid, and I would think those impressive palps would get it to species.

find, photographed before setting aside with a moisture source. Released outside so hopefully it survived.

Been re-reading the family account in Spiders of North America, some clues, might require digging deeper into the literature. Wish I had rescued some of Chambelin's papers when I had the chance many years ago.

As I really can't help, I offer this link for anyone who might be interested. Plates 16 and 17 may be useful?
http://digitallibrary.amnh.org/dspace/handle/2246/340

more than useful, sharing it is greatly appreciated. Extracting the information will occupy many hours while winter drags on.

a member of the genus Tivyna. The palpal projection fits the key's couplet.

seems to be Dictyna calcarata in my opinion after reading John's link.
Range, habitat, description, and palpal organs match.
I bet there's more around your house. Nice images.

with D. calcarata. Reviewing the images and checking the C&G paper seems to confirm. Other spider shots can be now be evaluated with the new (to me) information.

The indoor spider fauna is always changing, never know what's on the menu (unless they are in containers).

Thanks for the input.