I found 11 Pogonomyrmex magnacanthus queens May 16th 2015, in Glamis, California. Four of them I found running around, and five I dug out of founding chambers. The only founding chambers I found were in one little cluster, and were clearly there before the rain came through, because they were barely recognizable. I'm pretty sure the four I found wandering around were just out foraging since they're semi-claustral.
I gave two of them to Retroman in a trade. Two of them I have in regular test tube setups, and two are in test tube setups with sand added that I brought back from Glamis. The remaining three I put in three of my small ant farm boxes just today.
So far it's been one week, and only two of them have laid eggs. Both of the two that laid eggs only have about one or two.