Hypolycaena phorbas is a butterfly of the family Lycaenidae. It is found in Waigeo, Biak, , mainland New Guinea and various outlying islands as well as Australia. The wingspan is about 30 mm. Adults are brown on top. The forewings of the males have a blue sheen and a large dark patch in the middle, while females have a white patch with a blue edge. The hindwings of both males and females have two tails beside a large black and white eyespot. The underside is fawn, with two rows of darker spots parallel to the wing margins. There are two small orange and black eyespots on the underside of the hindwings.