Lulworth skipper their greatest since its discovery there. With a wingspan of 24 to 28 millimetres, females being larger than males, the Lulworth skipper is a small butterfly, the smallest member of the genus "Thymelicus" in Europe and among the smallest butterflies in Britain. Aside from the size difference, the sexes are distinguished by females having a distinct circle of golden marks on each forewing. Due to their likeness to the rays around the eye of a peacock's feather, these are often known as "sun-ray" markings, and they can faintly appear on males. The Lulworth skipper was first described by German entomologist
West Lulworth James Gidea. From the late seventeenth to the mid nineteenth century smugglers used Lulworth Cove and other bays and beaches nearby. The building of coastguard cottages, which housed the customs officers still stand above the cove. Lulworth at one point had a mill, powered by water from a nearby spring. It was burnt down during the 19th century and all that remains of its existence is the millpond. West Lulworth civil parish covers . The underlying geology is mostly chalk, with a strip of Portland limestone along the coast. At Lulworth Cove the sea has breached the limestone and eroded