Have you seen an emperor moth or green hairstreak butterfly lately...?

It is hoped visitors to Exmoor will be all of a flutter this summer and report sightings of two special species.

The National Park is appealing for sightings of the green hairstreak butterfly - the UK's only green species - and the four-spotted emperor moth, which flies during the day.

The fluttery friends are two of 12 key species featuring in Exmoor Wild Watch 2015, which also includes the cuckoo, kestrel, red kite, hedgehog, brown hare, green tiger beetle, wood ant, waxcap fungi and string of sausages lichen.

"This is a great time of year for sightings and we need to know as much as possible about how these species are doing on Exmoor," said David Rolls, moorland education and outreach officer.

Anyone who spots any of the species on the moor can call the National Park Centre in Lynmouth on 01598 752509.

Or go to the Wild Watch website at www.exmoor-nationalpark.gov.uk/environment/wild-watch