The white-naped honeyeater was originally described as
Certhia lunata by French ornithologist
Louis Pierre Vieillot in 1802. The specific epithet is derived from the
Latin luna, meaning 'moon'; this refers to the crescent-shaped, white marking on its nape. It is a member of the genus
Melithreptus, with several species of similar size and (apart from the
brown-headed honeyeater) black-headed appearance, in the
honeyeater family,
Meliphagidae. The next closest relative outside the genus is the much larger, but similarly marked,
blue-faced honeyeater. More recently,
DNA analysis has shown honeyeaters to be related to the
Pardalotidae (pardalotes),
Acanthizidae (Australian warblers, scrubwrens, thornbills, etc.), and the
Maluridae (Australian fairy-wrens) in the large superfamily
Meliphagoidea.
Gilbert's honeyeater, found in southwest
Western Australia, was initially described as a separate species by
John Gould in 1844, before being reclassified as a subspecies of the white-naped for many years. However, a molecular study published in 2010 showed that it had diverged before the split of populations in eastern Australia into the white-naped and
black-headed honeyeaters. "White-naped honeyeater" has been designated as the official common name for the species by the
International Ornithologists' Union (IOC). == Description ==