We regularly have some that look like that on the front porch, and they try to run inside whenever the door is open. One has to have fast feet to keep them from getting in. Ours may be a little lighter brown than that, though, and I'm not certain they aren't recluses.
Last summer, one made it inside the front door, before she got the boot. When I squashed her, what look like thousands of little ones abandoned ships and scattered hither and yon. Thankfully, I had the bug spray handy, and coated the wood floor with it in a circle to contain them, then worked my way in from there. After that, I even had to break out the vacuum to clean up all those corpses.