addition to two extinct bird species found nowhere else, the Niue Night
Papa) and the Niue Rail Gallirallus
Papa), Niue has endemic subspecies of the Polynesian Triller Lalage maculosa whitmeei
the Polynesian Starling Aplonis
tabuensis brunnescens (IBC),
and the Purple-capped Fruit-dove Ptilinopus
porphyraceus whitmeei (Theme
Birds on Stamps).
A recently described endemic marine fish is the combtooth blenny Ecsenius niue (Te Papa) (Zootaxa pdf file).
Niuean Flat-tailed Sea Snake Laticauda schistorhynchus (Wikipedia)
is sometimes considered to be endemic.
Insects restricted to Niue include a recently described butterfly, the Niue Blue Nacaduba niueensis (Australian Museum). Other endemic insects include a rattlebox moth Utetheisa maddisoni (BHL), the leafhoppers Empoasca clodia (p. 8 of Bishop Museum pdf file) and Empoasca niuensis (Google Books), a planthopper Macrovanua (or Vanua) angusta (Google Books), a lined flat bark beetle Rhinolaemus niueensis (Wikimedia Commons) (Univ. Nebraska- Lincoln pdf file), a weevil Elytrurus niuei (PaDIL), and a scale insect Paracoccus niuensis (ScaleNet).
endemic invertebrates include a land snail Vatusila niueana (BHL),
a crab Orcovita
(p. 3 of CaveBiology.com
pdf file), a
cave-dwelling crustacean Pugiodactylus
an ostracod crustacean Dantya
pdf file), and a periwinkle Cenchritis
Journals pdf file).
A screwpine Pandanus niueensis (JSTOR) has been described from Niue and the form of Psychotria insularum (Smithsonian) may be different than that occurring elsewhere.
Niue is part of the Tongan Tropical Moist Forests ecoregion (EoE). For more information on the natural history of Niue see the "Niue National Biodiversity Strategy and Action Plan" (CBD pdf file).