Check out the outrageously long spurs on the hind legs of this beetle. After seeing these in the blowups, I thought perhaps they are used to propel the beetle. A quick jab into a rough substrate could do the trick. Yet the beetle was making its evasive leaps, apparently from a position of lying on its side and on its back, in a plastic container that would appear to offer little purchase for spurs.

At any rate, these spurs, the strange eyes, the gently clubbed antennae and the remarkable evasive maneuvers should help Don Chandler, if not someone else, to ID this beetle.