Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The False Heath Fritillary (Melitaea diamina) is a butterfly of the Nymphalidae family.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.