Little Critter Found a Home

[kitty26]

So, I was doing my usual maintenance to my orchids, this morning, and well, I came across something that scared the wind out of me.

I don't like spiders at the best of time, but I can cope with the ones which are normally in my room, however, I have never had one on my orchids and this one seemed to be doing something to the one it was on although I don't know what.

Additionally this one is white, again totally baffled me, I have never seen a white spider. Because of this I am concerned so thought I would see if I was just being paranoid or if this is some sort of plant pest which I need to keep an eye out for in future?

You can call me a pest myself if I am being over protective and it was indeed just a creative spider.