Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Balkan Pierrot or Little Tiger Blue (Tarucus balkanicus) is a small butterfly found in India that belongs to the Lycaenids or Blues family. A notable subspecies is the Black-spotted Pierrot, T. b. nigra. Tarucus is a butterfly genus in the family Lycaenidae. They are commonly known as blue pierrots or simply "pierrots". But the latter name is often used for the very closely related genus Castalius. In fact, the delimitation of Castalius versus Tarucus is not yet fully resolved, with some species, such as the Dark Pierrot (T. ananda), having been moved between the two genera repeatedly.