Anyway, thanks to Helen and Paul for their sharp eyed behaviour and enthusiasm to contact me. A good record for the county. A phone photo here. I shall take better tomorrow in natural light. Record has been forwarded to several (now jealous) county moth-ers as well as the county recorder. Being a male, its main job of breeding will have been done so I suspect there will be several local moth-ers wishing to add it to their collection. Note; something I do not do. However, this moth was found naturally dead so not great issues with it being added to a Hertfordshire collection for archive and museum use for the future.