Yes, this is a purseweb spider. The webbing and the massive jaws are indicative of Family Atypidae. Nice spotting! Oh, and this can be moved to the Arthropods category, please.
Try "purseweb spider". I'll send a link to my spotting; see if its the same tube: Here's a good site for your spider;
http://bugguide.net/node/view/1959/bgimage
Comments (4)