Cornufer macrosceles

The original species description was based on a single specimen (the holotype, collected in 1956), a small adult female 30 mm (1.2 in) in snout–vent length. The holotype is a small female. Two males found in 1999 measure 29 and 32 mm (1.1 and 1.3 in) in snout–vent length. The overall appearance is slender. The head is moderately large and wider than the body. The snout is acutely pointed and elongate. The tympanum is visible, not concealed by the low, fleshy supratympanic fold. The fingers are slender and have greatly expanded and swollen terminal disks. The toe tips are moderately expanded. No webbing is present. The dorsal coloration is bright olive-green, with distinct brown patches on the dorsum. The venter is white. Skin is smooth apart from a few dermal tubercles on the head and the dorsum.

Cornufer macrosceles occurs in rainforests at about 900 m (3,000 ft) above sea level (the altitude of the type locality is unknown). Specimens have been found perched on moss-covered branches of shrub-layer vegetation, about 1 m above the ground near a small mountain stream. They were well camouflaged in this habitat. Logging is prevalent in New Britain, but whether it is impacting the range of this species is unclear.

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