A small butterfly common in Europe, North Africa, and East Asia. In Israel it is common only in the Judean Hills, Samaria, the Upper Galilee, and Mount Hermon. It flies in spring and early summer (April to June). Its wingspan is about 35 mm. It has one generation per year. The underside of the wings is white, making it easy to identify.
The female lays her eggs on the leaves of Phlomis. The egg is whitish-green, spherical, and has transverse ribs.
The larva hatching from the egg is hairy, light-colored, and has a black head. For protection it builds itself a "house" from folds of the host plant's leaf. When it reaches a size of about 30 mm, it pupates.

Former name: the mottled hairstreak