Cinquefoil skipper of the forewing and the usually deeper red-brown underwings. The cinquefoil skipper flies in July and August. The larval food plant is spring cinquefoil ("Potentilla neumanniana"). Cinquefoil skipper The cinquefoil skipper ("Pyrgus cirsii") is a species of skipper butterfly (family Hesperiidae). It has a scattered distribution in central and southern Europe, and several isolated populations in north-eastern Turkey and in Armenia. This species has a wingspan of 26–28 mm and, typically of its genus, can be very difficult to identify in the field. It is sometimes considered a subspecies of the carline skipper ("P. carlinae") as the two are known
Lulworth Cove a natural arch. To the east there is a fossilised forest. Lulworth is also close to Kimmeridge, famous for its rocky shore and fossils. Oil-bearing sands beneath the sea bed form the largest British oil field outside the North Sea area, and contain the highest quality oil in Europe. Geologists and geographers have been interested in the area since the beginning of the 19th century, and in the 1830s the first serious study of the area took place. Since then the area has drawn students from all over the world. Purbeck suffers from trampling because of its many visitors and