This is a male folding-door spider in the genus Antrodiaetus. They are very common this time of year as they wander in search of the females (which remain inside their silk-lined burrows).

Then the females must be the ones we occasionally dig up in the yard on accident. This one I believe was found under a those cement things for garden & yard barriers. I found another one in an Oak Forest on the other side of the Eola Hills that was under a log. A lot of the insects started coming out recently because of the rain we had here recently. I took advantage of some of the earthworms & gastropods that came out for Garter Snake food and found several other inverts while looking. Thanks I've seen their burrows several times while digging and have found live & dead ones before.

This could be Antrodiaetus pacificus. I used to see a lot of the males wandering around at this time of year when I was living in Corvallis.