Gracixalus trieng
Gracixalus trieng, also known as the Trieng tree frog or Trieng bushfrog, is a species of frog in the family Rhacophoridae. It is endemic to Vietnam and is only known from the area of its type locality, Ngoc Linh Nature Reserve in Đắk Glei District, Kon Tum Province. Mount Ngoc Linh and adjacent peaks form an isolated high-elevation area and the species is unlikely to exist elsewhere.
Etymology
The specific name trieng refers to the local Trieng people who assisted the describers of this species in their field work.Description
Adult males measure in snout–vent length. Adult females are unknown; two juveniles measured in SVL. The body is robust. The snout is rounded. The tympanum and supratympanic fold are distinct. The fingers are narrow and bear well-developed discs; there is basal webbing between the fingers II–IV. The toes bear well-developed discs and are webbed. Skin texture varies from almost completely smooth to having scattered low tubercles. The typical diurnal coloration is dark brown dorsally and dark pinkish brown ventrally, with distinct dark brown dorsal markings, where the typical nocturnal coloration is mostly pale yellow dorsally and pale pink ventrally, without the distinct dorsal markings.Advertisement call is unknown, but males do have a vocal sac.