I haven't tried to do an official count but it looks like there's at least 15 queens, and at least 100 workers.
Unfortunately I don't have anything on hand to measure them, but they are quite small - I'd say they are a bit smaller than L. Niger workers.
The nest was in very hot, dry gravel in my back yard.
I was thinking Tampinoma Erracticum, but is anyone able to confirm?
And most importantly, I'd love some care tips for these guys. I've been searching online and finding very little good information about their care.
They don't seem interested in any larger dead insects that I give, but they did take a tiny pre-squished gnat, so I'll try some more of those today. They love their sugar water of course, and I have a heating cable coming in the mail soon. In the meantime I'm putting sun-baked rocks against their test tubes during the day, which they get very excited about.
This last one is before they were moved to test tubes:
