The Niue Blue is the only endemic butterfly species found on the remote Pacific island of Niue. It was described by the Australian Museum Research Associate Rob Lachlan in 2012 from a pair of specimens, a male captured by Rob, and a female from the collections in the Bishop Museum, Hawaii.
Because there are only a handful of plant and animal species which are unique to Niue this butterfly has particular importance to the people of the island. The Premier of Niue intends to make this species the national butterfly for the island, and to feature this insect on a special run of postal stamps.
The Australian Museum is honoured to act as custodians for the type specimens of this rare butterfly on behalf of the people of Niue.
This rather small brown butterfly cannot be confused with any other species occurring on the island of Niue. The upper side is brown in both sexes, with a scattering of blue scales at the base of the wings in some female specimens, whilst the underside has an intricate pattern of wavy brown, dark brown and white lines.
Found only in a few isolated populations on the island of Niue.
Feeding and diet
The adults are nearly always associated with their larval food plant, a widespread tree species in the genus Alphitonia
Lachlan, R.B. 2012. A new species of Nacaduba Moore (Lepidoptera: Lycaenidae) from Niue, southwestern Pacific Ocean. Australian Entomologist, 39(2):49-54.