Polyommatus sarta is a species of lycaenid butterfly found in Asia.
Dark brown, overlaid on both fore and hind wings from the base outwards with bluish purple, this colour variable in extent but not reaching to the terminal margins in any specimens, and only up to or a little beyond the discs of the wings in very many. In all specimens the immediate base of the wings is suffused more or less prominently with pale blue, which is continued for a short distance down the dorsal margin of the hind wing. Fore and hind wings : an anticiliary dark line and tbe hind wing in many specimens with a subterminal series of dark spots; cilia white. Underside: brownish grey. Fore wing: a discocellular and a transverse discs; series of black spots, each spot encircled with white; the latter markings somewhat variable, in some specimens the discal aeries consists of five spots arranged in an outward curve, in others of six arranged in a transverse insinuate line; in nearly all specimens the edging of white on the outer side is spread diffusely outwards ; beyond these there are in some specimens a subterminal inner and an outer maculated narrow transverse band, each band edged on the outer side narrowly and somewhat obscurely with white followed by an anticiliary slender black line; in other specimens the outer dark maculated band becomes a prominent, catenulated, terminal white band, each link centred with a dark spot. Hind wing: a transverse subbasal series of... Read More