Velvet mite / Family Trombidiidae

A velvet mite, family Trombidiidae.

I found this one in the garden. You can just about see them with the naked eye, about the size of a flea, mostly standing out because of their vivid color.

I cooled it in the freezer to slow it down, but that turned out to be fatal, I'm afraid to say. Positioning a dead 1mm mite is no easy task, but this is the best I could do.

This is a 7:1 magnification focus stack. The depth of field is 2.25mm (the part of the leaf in focus) so this gives an idea about the mite's size.

I checked with an expert, and it's not possible to bring this to a species level. I'm thinking it could be the nymph of Trombidium Holosericeum, but it's a wild guess and will stick to the expert's judgement.

There's about 50,000 mites documented, scientists expect there to exist at least 1 million species.
Mites don't have antennae, likely because they don't even have a head.

The vivid color of the velvet mites likely are to warn predators. Whom wouldn't be interested anyway, as they taste incredibly foul. As such, many mite species have no predators other than other predatory mites, including cannibalism.