Minimalist critters

Tidying up the garden, I moved a flower pot and found these springtails sheltered underneath.

Onychiuridae, blind white springtails, about 1 to 3 mm. long.

I haven't seen any of these here for a couple of years. It may be that it was a bit too dry for them to be close to the surface.

They look white at first glance, but it's a milky, transparent white. The smaller they are, the more transparent. Look at this one: * Update: The little grey one, down near the centre bottom here, is a different species, probably Proisotoma sp. (See first comment, below. Thanks, Andy!)

Grey springtail, centre bottom. You can see the brown central gut through the transparent body.

Zooming in on another group.

These springtails don't spring; they lack the furcula under the abdomen. So they run around constantly, somehow always staying near their mates, even though they are blind.

Aren't they cute?