It certainly isn't the larvae of fungus gnat. Their larvae look like maggots. Certainly isn't a termite either. we have them here so I know what they look like.
I think that NYCorchidman is right.
Springtail Pest Control Info - Empire Pest Control
I certainly wouldn't bother to kill them Here's what the site says about them.
"To avoid dehydration, springtails live in areas where there is a lot of moisture and high humidity. Springtails eat mold, algae and fungi that they find in these areas."
Like I say, I really wouldn't kill them, in fact, I'd consider innoculating pots with them. Anything that eats mold and fungus has got to be a good idea.
Remember, a sterile environment can support less growth than one with a vigorous micro ecology.