 This is overlaid with a pattern of 20-30 rhombic blotches that have pale edges, as well as a sprinkling of black scales and oblique black bars on the sides.Each oblique black bar is topped by one or two black spots, each with a pale centre, and strongly resembling an eye.Northern populations may be patternless, making them difficult to identify, while in others the pale edges may be missing, the rhombic blotches may be a darker color, or there may even be a dark brown vertebral stripe.