Male upperside pale purple to violet with in certain lights a blue suffusion, the markings of the underside apparent through transparency.

Forewing: costal margin above vein 12 suffused strongly with blue; discocellulars with a transverse elongate blackish spot; a slender anteciliary black line.

Female upperside: dark brown; bases of the wings suffused with bluish scales.

Forewing: the transverse discocellular spot as in the 6 but continued posteriorly by a black spot in interspace 2 coalescent with a similar spot in interspace 1 (in some specimens the latter two spots are only seen by transparency from the underside); a medial area beyond apex of cell white, crossed by an upper discal, macular, short black band that extends from vein 3 to vein 6; the ground colour over the rest uniform; on the costal margin there are some pale lines between veins 10, 11 and 12, and on the broad terminal margin of ground colour an obscure transverse macular white line.

Colour pale green, the whole upper surface covered with a shagreening of small white tubercles which under a magnifying-glass give it a frosted appearance; along the lateral edge of the body and round the anal segment there are numerous somewhat long whitish hairs.

Dr. A. Forel of Geneva identifies the ants which attend these larvae as Camponotus rubripes, Drury (sylvaticus, Fabr.