Ogyris ianthis, commonly known as the Golden azure or Sydney azure, is a butterfly of the family Lycaenidae

Lycaenidae

The Lycaenidae are the second-largest family of butterflies, with about 6000 species worldwide, whose members are also called gossamer-winged butterflies...

. It is an uncommon species found in localised areas around Sydney and northern New South Wales and into southern Queensland. It inhabits dry sclerophyll forest and open woodland on sandstone soils.

Both males and females have a wingspan

Wingspan

The wingspan of an airplane or a bird, is the distance from one wingtip to the other wingtip. For example, the Boeing 777 has a wingspan of about ; and a Wandering Albatross caught in 1965 had a wingspan of , the official record for a living bird.The term wingspan, more technically extent, is...

 of around 33 mm. The male above is pale blue with black margins, and pale brown on the underside. The female is golden orange with blackish margins on the upperside and more brownish on the underside.

The larvae feed upon various species in the mistletoe family, including Amyema miquelii

Amyema miquelii

Amyema miquelli is a species of flowering plant, an epiphytic hemiparasitic plant of the family Loranthaceae, found attached to several species of Australian eucalypt...

, A. linophylla, A. quandang

Amyema quandang

Amyema quandang is a species of hemi-parasitic shrub which is widespread throughout the mainland of Australia, especially arid inland regions, sometimes referred to as the grey mistletoe.-Description:...

, Dendrophthoe glabrescens, D. vitellina

Dendrophthoe vitellina

Dendrophthoe vitellina, commonly known as Long-flowered- or Apostle Mistletoe, is a hemiparasitic plant of the Loranthaceae family of mistletoes. The genus Dendrophthoe comprises about 31 species spread across tropical Africa, Asia, and Australia...

and Muellerina eucalyptoides. As with many Lycaenidae, sugar ants attend the larvae, in this case the species Froggatella kirbii.