They are probably springtails! As for the arthropod species, I did a bit of research, so here's some of my guesses:
A. Platyarthrus hoffmannseggii
B. Porcellio laevis
C. Trichorhina tomentosa
So those are my guesses! I'm no professional in this area but that's what I think based on my research. Springtails, though, are really great for a lot of things. They break down compost, are hunted by ants, breed super fast, and eleminate dangerous molds. Great to have in any ant/woodlouse set-up!
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