With recently sloughed outer epidermis. The dorsal surface often has marks of white, orange, yellow, black, and/or red that may cover almost all the ground colour. Sometimes an outer layer of epidermis is sloughed (Bate in Forbes & Hanley 1853), revealing fresh bright colours, as in this case, or, sometimes, resulting in the loss of the majority of the sculpture and colour (see fig. 12 ). Length 12 mm.  Menai Strait, Wales. June 2013.