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 the soft Wealden Beds behind, resulting in the circular shape of the cove. West Lulworth village is dominated by two hills: to the east is Bindon Hill, a 170m high ridge, which has extensive remains of Iron Age earthworks. To the west is Hambury Tout, which has a barrow on its rounded top. West Lulworth village is about half a mile north of Lulworth Cove, a picturesque, sheltered bay enclosed almost in a circle. The natural limestone arch of Durdle Door is a mile west along the coast from Lulworth Cove. About 100m west of the cove, lies Stair Hole,