~ Entomobrya intermedia~
A little bit of an experiment here, decided to use my 1.4x Extender with my MP-E 65mm at full 5x stretch, so after a little calculation this was at 7x magnification, I have cropped the image a bit, so does that technically increase the magnification more? Main difficulty here was finding the subject 4-5mm long, also focusing with reduced light :)
Anyway, in conclusion, I am happy with the results and will use this for my smaller subjects.
This is a Springtail, I think it is Entomobrya sp, but not sure which one :)
Thanks to Tobyjug and Frans for species confirmation Entomobrya intermedia