The glass frogs are frogs of the amphibian family Centrolenidae. While the general background coloration of most glass frogs is primarily lime green, the abdominal skin of some members of this family is transparent and translucent. The internal viscera, including the heart, liver, and gastrointestinal tract, are visible through the skin, hence the common name is given as glass frog. Glass frogs are arboreal, meaning they mainly live in trees, and only come out for mating season.
Nymphargus grandisonae is a species of frog in the family Centrolenidae. It is found in Andes of Colombia and Ecuador. Its natural habitat is tropical moist montane forest ; larvae develop in streams and still-water pools. Its habitat is threatened by habitat loss, introduced fish, and agricultural pollution, but it is still a common species not considered threatened by the IUCN.
Nymphargus anomalus is a species of frog in the family Centrolenidae. It is endemic to Ecuador and occurs on the Amazonian slopes of the Ecuadorian Andes in the Napo Province. Common name Napo Cochran frog has been coined for it.
Nymphargus armatus is a species of frog in the family Centrolenidae. It is endemic to Colombia and only known from the immediate vicinity of its type locality in El Cairo municipality, Valle del Cauca Department. In much of the literature it is known as Cochranella armata as it was moved to its present genus only in 2007.
Nymphargus balionota is a species of frog in the family Centrolenidae. It is found in the Andes of Colombia and Ecuador. Common names Mindo Cochran frog and mottled glassfrog has been coined for it.
Nymphargus bejaranoi is a species of frog in the family Centrolenidae. It is endemic to the eastern slopes of the Bolivian Andes in the Cochabamba, Chuquisaca, La Paz, and Santa Cruz departments. The specific name bejaranoi honors Gastón Bejarano, a Bolivian zoologist and Director of Forestry and National Parks, Ministry of Agriculture. Common name Bolivian Cochran frog has been coined for this species.
Nymphargus cariticommatus is a species of frog in the family Centrolenidae. It is endemic to the southern Amazonian slopes of the Cordillera Oriental in Ecuador. Its natural habitats are old-growth cloud forests. It is threatened by habitat loss due to agricultural development and logging.
Nymphargus chami is a species of frog in the family Centrolenidae, formerly placed in Cochranella. It is endemic to Colombia where it occurs on the Cordillera Occidental in the Antioquia and Risaralda departments.
Nymphargus cochranae is a species of frog in the family Centrolenidae. It is found in the lower Amazonian slopes of the Cordillera Occidental of Ecuador and adjacent Colombia, though the Colombian records require confirmation.
Nymphargus cristinae is a species of frog in the family Centrolenidae, formerly placed in Cochranella. It is endemic to Colombia where it is only known near its type locality on the western slope of the Cordillera Occidental in Urrao, Antioquia. Its natural habitat is sub-Andean primary forest. It occurs on vegetation next to streams with canopy cover over the stream. Its conservation status is unclear but habitat degradation and loss caused by cattle raising, timber extraction, and cultivation of illegal crops are major threats.
Nymphargus garciae is a species of frog in the family Centrolenidae, formerly placed in Cochranella. It is endemic to the eastern slopes of the Cordillera Central, Colombia. Its natural habitat is vegetation alongside streams in sub-Andean and Andean forests. It requires gallery forest for reproduction, and is therefore very sensitive to disturbance of this kind of habitat. It is threatened by habitat loss.
Nymphargus luminosus is a species of frog in the family Centrolenidae, formerly placed in Cochranella. It is endemic to Colombia. Its natural habitats are subtropical or tropical moist montane forests and rivers. It is threatened by habitat loss.
Nymphargus nephelophila is a species of frogs in the family Centrolenidae, formerly placed in Cochranella. It is endemic to the Caquetá Department, Colombia, where it is known from the eastern versant of the Cordillera Oriental near Florencia. Its natural habitat is vegetation near streams in cloud forest, including secondary forest. Habitat loss is a threat to this species, but it is too little known to assess its conservation status.
Nymphargus ocellatus is a species of frog in the family Centrolenidae. It is endemic to the Amazonian slopes of Andes in Peru. Its natural habitats are tropical moist montane forests ; larvae develop in streams. It is threatened by habitat loss.
Nymphargus oreonympha is a species of frog in the family Centrolenidae, formerly placed in Cochranella. It is endemic to Colombia where it occurs on the Cordillera Oriental in Florencia, the Caquetá Department. Its natural habitat is cloud forest, including secondary forest, where it occurs on vegetation near streams. Its conservation status is unclear.
Nymphargus posadae is a species of frog in the family Centrolenidae, formerly placed in Cochranella. It inhabits the eastern slopes of the Andes of Colombia, Ecuador, and northeastern Peru. It is reasonably common in Colombia but rare in Ecuador.
Nymphargus rosada is a species of frog in the family Centrolenidae, formerly placed in Cochranella. It is endemic to Colombia where it is known from the eastern slopes of the Cordillera Central. Its natural habitats are sub-Andean forests alongside streams. It is threatened by habitat fragmentation and loss caused by agricultural expansion, timber extraction, and water pollution.
Nymphargus siren is a species of frog in the family Centrolenidae, formerly placed in Cochranella. It is found in Colombia, Ecuador, and Peru. Its natural habitats are pre-montane forests near streams. It is threatened by habitat loss.
Nymphargus spilotus is a species of frog in the family Centrolenidae, formerly placed in Cochranella. It is endemic to Colombia where it occurs on the Cordillera Central in Samaná, the Caldas Department. Its natural habitat is sub-Andean forest where it occurs on vegetation alongside streams. Its conservation status is unclear.
Nymphargus is a genus of glass frogs in the subfamily Centroleninae, which was established in 2007. They are distributed in the Andean slopes of Colombia, Ecuador, Peru, and Bolivia. They are characterized by lacking webbing among the outer fingers, lacking humeral spines in adult males, and having a lobed liver covered by a transparent hepatic peritoneum.
