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.
Osteocephalus is a genus of frogs, the slender-legged tree frogs, in the family Hylidae found in the Guianas, the Amazon Basin, Venezuela, Colombia, southeastern Brazil, and north-eastern Argentina. Males are warty, while females are smooth.
Adenomera is a genus of leptodactylid frogs, sometimes known as tropical bullfrogs, found in South America east of the Andes. The genus was until recently considered a synonym of Leptodactylus.
Cryptobatrachus is a genus of frogs in the family Hemiphractidae. They are found in Colombia and Venezuela. They are also known as backpack frogs, as the females have the habit of carrying their egg clutch on their backs until the young hatch; this behavior also occurs in the related hemiphractid genera Hemiphractus and Stefania.
Anomaloglossus breweri is a species of frogs in the family Aromobatidae. It is only known from its type locality, Aprada-tepui in the Bolívar state of southeastern Venezuela. This species was discovered by scientists exploring the inaccessible and remote region of Aprada-tepui. It is a fast-moving frog that lives along creeks and in quiet pools along small streams along the slopes near the cave. The frog is named for Charles Brewer-Carías who collected the type series.
Dendropsophus is a genus of frogs in the family Hylidae. They are distributed in Central and South America, from southern Mexico to northern Argentina and Uruguay. They are sometimes known under the common name Fitzinger neotropical treefrogs or yellow treefrogs
Boana is a genus of frogs in the family Hylidae. They are commonly known as gladiator frogs, gladiator treefrogs or Wagler Neotropical treefrogs. These frogs are distributed in the tropical Central and South America from Nicaragua to Argentina, as well as in the Caribbean.
Anomaloglossus praderioi is a species of frog in the family Aromobatidae. It is found in the Pantepui region of southeastern Venezuela and western Guyana. More specifically, this frog is known from Mount Roraima, Sierra de Lema in Venezuela, and Maringma-tepui in Guyana. Its actual range is probably wider and might reach into northern Brazil.
Osteocephalus helenae is a species of frog in the family Hylidae. It is widely distributed in the Amazon Basin and is known from the lowlands of Bolivia, Peru, Brazil, Colombia, Venezuela, Guyana, and French Guiana. The specific name helenae honors Helen Beulah Thompson Gaige, an American herpetologist. Common name Helena's [sic] treefrog has been proposed for it.
Scarthyla vigilans is a species of frog in the family Hylidae. It is found in northern Colombia, northern Venezuela, and Trinidad. Although generic allocation of this species has been controversial, molecular data have now confirmed its close relationship with Scarthyla goinorum and placement in that genus. Indeed, adults are very similar to Scarthyla goinorum; however, the male advertisement call and tadpoles are clearly distinct.
Warren's tree frog is a species of frog in the family Hylidae found in Guyana and possibly Brazil and Venezuela. Its natural habitats are subtropical or tropical moist montane forests, rivers, freshwater marshes, and intermittent freshwater marshes.
Troschel's treefrog, also known as the blue-flanked treefrog or the convict treefrog, is a species of frog in the family Hylidae. It is found in most parts of the Amazon Basin, except in the southeast and the Guianas. Colombian, Venezuelan, and Surinamese records need confirmation.
The emerald-eyed tree frog is a species of frog in the family Hylidae. It is largely restricted to the Atlantic Forest region of Brazil. Some populations previously regarded as Boana crepitans have been separated into the species Boana xerophylla and Boana platanera.
Boana xerophylla is a species of frog in the family Hylidae. It's found in northern South America.
Boana rhythmica is a species of frog in the family Hylidae. It is endemic to Venezuela and only known from its type locality, Cerro Jaua in Bolívar State. It occurs along streams on the slopes of the tepui. It is a nocturnal species found on branches of vegetation 0.3–1 m (1–3 ft) above the ground. The tepui is within the Jaua-Sarisariñama National Park, and no major threats to this species have been identified.
The Upper Orinoco tree frog is a species of frog in the family Hylidae found in Brazil, Colombia, and Venezuela, and possibly Bolivia and Guyana. Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical swamps, moist savanna, and rivers. It is threatened by habitat loss.
Josefa Celsa Señaris is a Venezuelan herpetologist. She has published information about frogs and she has identified new genera and species. Señaris is the director of the La Salle Foundation's Natural History Museum in Caracas.
Dryaderces is a small genus of frogs in the family Hylidae. Their known distribution is disjunct, with one species found in the upper Amazon Basin and lower Andean slopes between central Peru and Amazonian Bolivia, and another one in Pará, Brazil. Its sister taxon is Osteocephalus. No phenotypic synapomorphies defining the genus are known.
Alfaroi's tree frog is a frog in the family Hylidae. It is endemic to Brazil, Ecuador, and Colombia. Scientists think it may also live in Peru. Scientists have seen it between 176 and 350 meters above sea level.
Boana pugnax, the Chirique-Flusse tree frog, is a frog in the family Hylidae. It is endemic to Panama, Colombia, and Venezuela. Scientists have seen it as high as 500 meters above sea level.
