Found under a board. I've been seeing these impressively built males wandering around for the past two to three weeks. They often seem to get caught and eaten by Parasteatoda tepidariorum, in whose webs I've noticed several.

This guy was pretty nice to photograph. He didn't go anywhere (except once), and even let me rearrange his legs a bit with a piece of grass a couple of times without a fuss.

From Rod Crawford's comment on this image, I gather a side view of the front leg is valuable in identifying males, so I've included one. I also got a dorsal view of it if necessary, and a close-up of just the tibia.