Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pale Clouded Yellow (Colias hyale) is a small butterfly of the Family Pieridae, that is, the Yellows and Whites, which is found in most of Europe and large parts of Asia.A butterfly is a mainly day-flying insect of the order Lepidoptera, the butterflies and moths. Like other holometabolous insects, the butterfly's life cycle consists of four parts: egg, larva, pupa and adult. Most species are diurnal.Butterflies have large, often brightly coloured wings, and conspicuous, fluttering flight.