Polyommatus phyllis is a butterfly found in the Palearctic (North Iran, Kopet-Dagh) that belongs to the blues family.

Male above sea-green, with a silvery silky gloss; female dark brown, with a distinct discocellular spot on the forewing.

On the underside both sexes have a very sharply defined conspicuous mesial streak which extends from the base across some ocelli to the outer margin.

The male beneath much more dusted with verdigris at the base, usually smaller and the upperside of a more bluish tinge.

At Shakuh, but only at higher altitudes (9—11 000 ft.), while phyllis flies in abundance already low down in the valley.