Essex skipper darker brown. Elongate chrysalids are yellowish-green, and each has a dark dorsal stripe seen in caterpillars. Essex skipper The Essex skipper ("Thymelicus lineola") is a butterfly in family Hesperiidae. In North America, it is known as the European skipper. With a wingspan of 2.5 to 2.9 cm, it is very similar in appearance to the small skipper "Thymelicus sylvestris". They can be told apart by the undersides of the tips of their antennae: the Essex skipper's antennae are black, whereas those of the small skipper are orange. This butterfly occurs throughout much of the Palaearctic region. Its range is from
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