Duplex horakae is a moth

Moth

A moth is an insect closely related to the butterfly, both being of the order Lepidoptera. Moths form the majority of this order; there are thought to be 150,000 to 250,000 different species of moth , with thousands of species yet to be described...

 of the Micronoctuidae

Micronoctuidae

The Micronoctuidae are a family of moths that includes about 400 described species. The family was first described in 2005.Micronoctua karsholti is the smallest of all species in the Noctuoidea superfamily.-Taxonomic History:...

 family. It is known from the northern parts of the Northern Territory

Northern Territory

The Northern Territory is a federal territory of Australia, occupying much of the centre of the mainland continent, as well as the central northern regions...

 and the north-eastern part of Western Australia

Western Australia

Western Australia is a state of Australia, occupying the entire western third of the Australian continent. It is bounded by the Indian Ocean to the north and west, the Great Australian Bight and Indian Ocean to the south, the Northern Territory to the north-east and South Australia to the south-east...

.

The 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...

is 7.5-9 mm. The crosslines are all present and black. The antemedial line is prominent and sharply angled subcostally. The subterminal line is prominent, waved. The terminal line is marked by dense black interneural spots. The hindwing is light grey, without a discal spot and the underside of the forewing is dark grey, while the underside of the hindwing is grey, with an indistinct discal spot.