where I initially had it. :) Now that I read the info I see they're not parasitic. I still have these, if you'd like me to try to get any particular details.

I didn't notice they were originally in Mesostigmata :) That's funny. Yes, these are definitely mesostigs... but I unfortunately don't know the group well enough to identify them much further with any confidence. See if you can get a crisp shot of the underside. If you can, then they will likely be easy to identify further.

if I can convince one off its mount. Thanks!

You've encouraged me to go ahead and post the beetle, too, and poking around, I see it does appear to be a Trox sp. Good eye for the small details. :)