Behavior before egg sac

[Nasubi77]

Are there any indicative behaviors that an egg sac is about to appear?
I have a little wolf spider

She hasn't eaten since I've had her...almost 3 weeks now.
And today she is awfully active. She's making round after round of her enclosure. Most other animal species seem to get restless before birth, so I wondered if I could expect an egg sac soon?

Thanks!

And ID ideas would be great, too.

 

[gunslinger]

To ID we would probably need more pictures of various things, as well as some size reference, but even then ID is doubtful past genus. Also, where is the spider from? It is very nice looking.