Does it run fast? It looks like a fast one. A few years ago I had huge one drop on my desk, and it ran off. It was so big I could hear its fuzzy little legs hitting stuff as it ran. It then disappeared off the edge, and I spent the rest of the night with my legs in the chair :^D I found him a few days later under a shoe, and got him outside safe and sound.
tl;dr
Damned if I know what it is :^D