I was photographing springtails, using a FOV 5mm wide, when I saw this. It was much like a pupa emerging from a larva, with the woodlouse expanding and contracting it body (visible in the stereo). I had no idea how long it would last so I quickly reduced the lens extension by two tubes to just one, to give a FOV which I later found to be 10mm. It was just possible to get the subject in the frame but I was not always successful.
Olympus EM-1 (manual mode), Leitz Wetzlar Photar 25mm f2.5 macro at f11 or f16, twin TTL flash, hand-held with support.
The images are shown in the order shot. The stereo is crosseye.
I think this is the Common Striped Woodlouse [i]Philoscia muscorum[/i]