Neat looking spider. You may have better luck posting this in the Insect forum.

Not an immature wolf. Most definitely a sac spider. I find them occasionally in my apt over the winter. Like wolf spiders, they are active predators as opposed to the sit and wait/ambush of those spiders which construct prey catching webs. I just let them "do their thing".

Lalala, you may be right. Update. This spider has moved on to other places; I hadn't seen it on the plant in many days. Though not a spider "fan" I have respect for them. When I worked in a garden center, the head grower yelled at those who wanted to kill this particularly large spider found on a plant. He called that spider his secret, biological weapon and told everyone to leave it alone.

That is not spider mite webbing. And the mites themselves are so tiny they cannot be seen with the naked eye.....unless you knock then off onto a sheet of white paper (they will show up as microscopic specks of dust :-)). If you suspect mites, the best thing you can do is treat your plants to a thorough shower.....in the sink, in the shower or outside with a hose if a large plant. Mites hate moisture and humidity and maintaining the humidity at an adequately high level - always a challenge with indoor houseplants - will go a long way in discouraging them. Just make sure you are very thorough - top and bottom of all the foliage and down into the stems. I don't find insecticidal soap all that effective against either the mites or the mealies and would prefer to use neem oil for this purpose. But if you do opt for the soap, I would use a proper prepared horticultural insecticidal soap, not something made from household ingredients. They are not at all the same.