Unidentified bugs detected

I recently bought a christmas tree. To be precise a living tree (if it survives all that warm/cold temperature mix it will get a nice place in my garden). Before I put it inside our flat fresh it has got some nice fresh humus. Unfortunately this humus has also been home for about 3 dozen of these unidentified bugs After collecting them all up I got curious but I haven't been able to classify them correctly. I am sorry for the low quality of the pictures but my digicam is not able to make nice macro shots.

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