Are these claustral cells? Should I dig these up and try to unearth the queens if so? And if so, how should I go about doing it?
In this photo, you may not see it, a tetramorium immigrans worker is attempting to bury the entrance. All those pieces of debris are from her and her buddies.
This one looks a lot fresher, dirt still wet.
Manica invidia (1 queen, ~200 workers)
Manica invidia (1 colonies, 1 queens plus 3 workers)
Lasius niger (single queen, ~200 workers - naturalistic, predatory set-up)
Lasius americanus (1 colony, ~10 workers)
Tetramorium immigrans (3 colonies, 3 queens, ~ five workers each | 1 colony, 1 queen, ~1200 workers)
Formica aserva (aserva queen, ~15 ​Formica neorufibarbis workers)
"And God made...everything that creeps on the ground according to its kind.
And God saw that it was good." - Genesis 1:25