The Bog Grass Moth was found at Cors Geirch National Nature Reserve on the Llŷn Peninsula in Gwynedd, as conservationists were surveying the area's species.

Experts called it a "special surprise" to find the "incredibly sparse moth" in the habitat.

An exact population figure in the UK for the Bog Grass Moth is not known, but they have only been recorded in a small number of English counties, such as Dorset.