Update 7-23-2017
I found a new queen in Wild Crossing, California on 7-10-2017. I found it wandering around on the ground at night, so I assume they flew a little earlier. I tried putting it in one of my dirt box setups, but it just sat there and didn't want to dig, so I put it in one of my small founding formicariums instead. It now has a big pile of eggs.