Thank you very much Chad, for your reply. I considered the plus and minus of each choice, and I decided to release it in a small flower garden which I intentionally attend very casually. It's a patch of low wild grasses, clover and other low to the ground weeds. This patch also has a large rock and medium-sized piece of driftwood.

My decision was based on my thinking and feeling that's it's better off in a natural setting. Wandering on the inside of a screen for who knows how long, with no chance of escape, seems to me as resulting in a high probability of death by starvation. To me, this would result in a wasted life which rarely happens to a species in its natural habitat. Inside, it would not provide food for a predator, nor have the ability to be the predator it is, hunting other insects/spiders that abound outside. Also, the chance for reproduction would be highly unlikely inside.

If my patch is unsuitable, it can wander off to one that is. I'm assuming Jumping Spiders have evolved to live outside? My neighborhood has grape arbors, wild flower gardens and flowers purchased for their beauty. Across a not too busy road is a huge cemetery: lots of places to jump on potential prey there.

So now it is out in the natural world, complete with the risks and opportunities that await. Upon release, it immediately hid under some low-growing weeds. A good start in a new environment.