Found at night in the garden over a stone.

It exhibited a curious behaviour: it played dead when I tried to catch it gently to take some pictures. It allowed to be rolled upside down and didn't move its legs. Then when left on a white paper, it still played dead, and when touched with a small leave, it would very smoothly change its legs position to remain still again. It didn't really moved for some time, but I noticed it was not dead as I initially thought. When I released it, it just run away.