Can't tell what they are, I think it was Prenolepsis imparis but I can't be 100%. The workers had pointy butts and were not quite black but very very dark. I caught a few alates just in case and I plan to go out later tonight to see if I can up my chances of a fertilized queen. The thorax is very redish brown and the gasters are darker. They are aprox 11-12mm (minus wings).