Nyctimystes is a genus of tree frogs in the subfamily Pelodryadinae of the family Hylidae. They are principally Papuan species, but also inhabit islands in the Moluccas. All species in this genus have one distinct feature that separates them from other species in the family, the lower eyelid is marked with pattern of lines, veins, or dots. This feature presumably acts as camouflage when the frogs are at rest during the day.
The multi-coloured tree frog or multi-coloured frog is a species of frog in the subfamily Pelodryadinae. It is endemic to West Papua, Indonesia. Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical moist montane forests, swamps, and freshwater marshes. It is threatened by habitat loss.
Nyctimystes avocalis is a species of frog in the subfamily Pelodryadinae. It is endemic to Papua New Guinea and is only known from its type locality on the east slope of Goodenough Island, one of the D'Entrecasteaux Islands. It has been given the common name loud big-eyed treefrog.
Nyctimystes cheesmani, commonly known as Cheesman's big-eyed treefrog, is a species of frog in the subfamily Pelodryadinae, endemic to Papua New Guinea. Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical moist montane forests, and rivers.
Grant's big-eyed tree frog is a species of frog in the subfamily Pelodryadinae found in New Guinea. Its natural habitats are subtropical or tropical moist lowland forests and rivers.
Nyctimystes gularis, the Mondo big-eyed tree frog, is a species of frog in the subfamily Pelodryadinae, endemic to Papua New Guinea. Its natural habitats are subtropical or tropical moist montane forests and rivers.
Nyctimystes foricula, the Kaironk big-eyed tree frog, is a species of frog in the subfamily Pelodryadinae, endemic to Papua New Guinea. Its natural habitats are subtropical or tropical moist montane forests, rivers, rural gardens, and heavily degraded former forests.
Nyctimystes humeralis, also known as green big-eyed tree frog, is a species of frog in the subfamily Pelodryadinae that is found in New Guinea. Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical moist montane forests, and rivers.
Nyctimystes kubori is a species of frog in the subfamily Pelodryadinae of the family Hylidae. It is endemic to Papua New Guinea and is widespread in the New Guinea Highlands between 141°E and 147°E and in the mountains of the Huon Peninsula. The specific name kubori refers to its type locality in the Kubor Mountains. Common name sandy big-eyed treefrog has been coined for this species.
Nyctimystes montanus is a species of frog in the subfamily Pelodryadinae. It is endemic to the Arfak Mountains, located in the Bird's Head Peninsula of northwestern New Guinea. This species is only known from its type locality. There are no records of this species after it was described in 1878, perhaps because of lack of surveys.
Nyctimystes narinosus, the common big-eyed treefrog, is a species of frog in the subfamily Pelodryadinae of the family Hylidae. It is endemic to New Guinea and occurs in the Wahgi-Sepik Dividing Range and the Schrader Mountains, on both sides of the border between Papua (Indonesia) and Papua New Guinea. There is, however, some uncertainty about the western limit of this species. Despite its vernacular name, Nyctimystes narinosus is not a common species.
Nyctimystes obsoletus, the Simbang big-eyed tree frog, is a species of frog in the subfamily Pelodryadinae, endemic to Papua New Guinea. Its natural habitats are subtropical or tropical moist lowland forests and rivers.
Nyctimystes papua, the Papua big-eyed tree frog, is a species of frog in the subfamily Pelodryadinae, endemic to Papua New Guinea. Its natural habitats are subtropical or tropical moist montane forests and rivers.
Nyctimystes perimetri, also known as the archipelago big-eyed treefrog, is a species of frog in the subfamily Pelodryadinae of the family Hylidae. It is endemic to Papua New Guinea and currently only known from the Louisiade Archipelago, although it might also occur in the Owen Stanley Range of the mainland Papua New Guinea. It has also been suggested that the Rossel Island population might represent a distinct species.
Nyctimystes persimilis, also known as the Milne big-eyed treefrog, is a species of frog in the subfamily Pelodryadinae of the family Hylidae. It is endemic to Papua New Guinea and known from Mount Dayman and Mount Simpson in the Owen Stanley Range.
Nyctimystes pulcher, the spurred big-eyed tree frog, is a species of frog in the subfamily Pelodryadinae, found in New Guinea. Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical moist montane forests, and rivers.
Nyctimystes semipalmatus, the Kokoda big-eyed tree frog, is a species of frog in the subfamily Pelodryadinae, endemic to Papua New Guinea. Its natural habitats are subtropical or tropical moist lowland forests, rivers, and heavily degraded former forests.
Nyctimystes zweifeli, or Zweifel's big-eyed tree frog, is a species of frog in the subfamily Pelodryadinae endemic to Papua New Guinea. Its natural habitats are subtropical or tropical moist montane forests and rivers.
Nyctimystes myolae is a species of tree frog in the subfamily Pelodryadinae, endemic to Papua New Guinea. Scientists observed this frog near the village of Myola village, at 2000 meters above sea level.
