Sorry to resurect this thread, buit check out this ebay item
THE CINNABAR ABERRATION 'CONEYI' BRITISH MOTH on eBay (end time 06-Nov-09 19:24:39 GMT)
I've also been shown a photo recently on a chap's phone which showed a burnet where the upperwings had been so abraded that they were transparent - so that only the underwings showed.