The glass frogs belong to 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, giving the glass frog its common name. The internal viscera, including the heart, liver, and gastrointestinal tract, are visible through the skin. When active their blood makes them visible; when sleeping most of the blood is concealed in the liver, hiding them. Glass frogs are arboreal, living mainly in trees, and only come out for mating season. Their transparency conceals them very effectively when sleeping on a green leaf, as they habitually do.
Cochranella is a genus of glass frogs, family Centrolenidae. They are found in Central America from Honduras southward to the Amazonian and Andean cloud forests of Colombia, Ecuador, Peru, and Bolivia.
Cochranella litoralis is a species of frog in the family Centrolenidae. It is known from the Pacific lowlands of southwestern Colombia and northern Ecuador. The specific name litoralis refers to the proximity of the type locality to the sea.
"Centrolene" medemi is a species of frog in the family Centrolenidae. The species occurs in the Cordillera Oriental in the Tolima, Caquetá, and Putumayo Departments in Colombia and adjacent Napo in Ecuador. The generic placement of this species within the subfamily Centroleninae is uncertain. The specific name medemi honors Fred Medem, collector of the holotype. Common name Medem giant glass frog has been coined for it.
Centrolene notosticta is a species of frog in the family Centrolenidae. It is found on the Cordillera Oriental in Colombia and on its extension to north, Serranía del Perijá, in the Zulia state in Venezuela.
Nymphargus balionotus 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.
Vitreorana castroviejoi is a species of frog in the family Centrolenidae. It is endemic to Cerro el Humo in the Paria Peninsula, Sucre state, northern Venezuela. It is locally known as ranita de cristal de Castroviejo. The specific name castroviejoi honors Javier Castroviejo Bolívar, a Spanish zoologist.
"Cochranella" euhystrix is a species of frog in the family Centrolenidae. It has an uncertain placement within subfamily Centroleninae. It is endemic to Peru and only known from the vicinity of its type locality near Cerro Blanco, in the Zaña River watershed, Department of Cajamarca. The specific name euhystrix refers to the unusually spiny appearance of this frog, especially males. Common name ridge Cochran frog has been proposed for this frog.
Cochranella mache, also known as the Mache glassfrog or Mache Cochran frog, is a species of frogs in the family Centrolenidae. It is found in the lowland forest and eastern slopes of Cordillera Mache–Chindul in the Esmeraldas Province, northwestern Ecuador, and in the western foothills of the Cordillera Occidental in Colombia.
Cochranella nola is a species of frog in the family Centrolenidae, the glass frogs, so named because of the transparent skin on the underside of the abdomen through which the internal organs can be seen. This species is endemic to Bolivia where it is found in the Andean foothills in the Santa Cruz Department. Its natural habitats are subtropical or tropical moist montane forests and rivers. The scientific name nola is Latin for "small bell", and refers to the high-pitched, bell-like call of the male in the breeding season.
"Cochranella" riveroi is a species of frog in the family Centrolenidae. It is endemic to Cerro Aracamuni, Venezuela. The generic placement of this species within the subfamily Centroleninae is uncertain.
Cochranella vozmedianoi is a species of frog in the family Centrolenidae, endemic to the Cerro El Humo, in the Paria Peninsula in northern Venezuela.
"Cochranella" xanthocheridia is a species of frog in the family Centrolenidae. It has an uncertain generic placement within subfamily Centroleninae; molecular data are not available and morphological and behavioural characters do not unambiguously place it in any specific genus.
Vitreorana antisthenesi is a species of frog in the family Centrolenidae. It is endemic to northern Venezuela and is known from the Venezuelan Coastal Range. Common name Aragua glass frog has been coined for it.
Vitreorana helenae is a species of frog in the family Centrolenidae. Two common names are sometimes used to refer to this species: Venezuelan glass frog and Helena's glass frog. In Spanish, it is locally known as ranita de cristal de Helena.
The Monte Duida tree frog is a species of frog in the family Hylidae. It is endemic to Venezuela and only known from the Cerro Duida, its type locality in the Amazonas state of southern Venezuela. Its natural habitat is montane tepui vegetation, specifically forest and shrubs adjacent to rivers, streams, and peat bogs. No significant threats to this species occurring in the Duida-Marahuaca National Park are known.
Dischidodactylus colonnelloi is a species of frog in the family Craugastoridae. It is endemic to Venezuela and only know from its type locality, Cerro Marahuaca, in the Amazonas State. The holotype was collected by G. Colonnello, hence the specific name colonnelloi.
Dischidodactylus duidensis is a species of frog in the family Craugastoridae. It is endemic to Venezuela and only known from its type locality, Cerro Duida. It was formally described in 1968 by Juan A. Rivero, even though the type series was collected 40 years earlier by George Henry Hamilton Tate.
Stefania goini is a species of frog in the family Hemiphractidae. It is endemic to Amazonas, Venezuela, and known from Cerro Duida and the nearby Cerro Huachamacari. Its natural habitats are streams on the tops of tepuis. It usually occurs on rocks.
Centroleninae is one of two subfamilies of the family Centrolenidae. It has nine genera distributed in Central America from Honduras south and east to northern and central South America. As of mid 2015, it contains 117 species.
