''Chalcorana'' is a genus of frogs in the family Ranidae, "true frogs". They are found in Southeast Asia, from Thailand to

Malay Peninsula The Malay Peninsula is located in Mainland Southeast Asia. The landmass runs approximately north–south, and at its terminus, it is the southernmost point of the Asian continental mainland. The area contains Peninsular Malaysia, Southern Tha ...

and the

Sunda Islands The Sunda Islands (; Tetun: ''Illa Sunda'') are a group of islands in the Indonesian Archipelago. They consist of the Greater Sunda Islands and the Lesser Sunda Islands. Etymology "Sunda" denotes the continental shelves or landmasses: the Sun ...

Taxonomy

''Chalcorana'' was originally introduced as a

subgenus In biology, a subgenus ( subgenera) is a taxonomic rank directly below genus. In the International Code of Zoological Nomenclature, a subgeneric name can be used independently or included in a species name, in parentheses, placed between the ge ...

of ''

Rana Rana may refer to: Astronomy * Rana (crater), a crater on Mars * Delta Eridani or Rana, a star Films * Rana (2012 film), an Indian Kannada-language action drama * Rana, a 1998 Telugu-language action film directed by A. Kodandarami Reddy * R ...

''. It was often included in the then-diverse genus ''

Hylarana ''Hylarana'', commonly known as golden-backed frogs, is a genus of true frogs found in tropical Asia. It was formerly considered highly diverse, containing around 84 to 96 valid species, but taxonomic revision resulted in a major change in the c ...

'', until Oliver and colleagues revised the genus in 2015, delimiting ''Hylarana'' more narrowly and elevating ''Chalcorana'' to genus rank.

Description

''Chalcorana'' are small to medium-sized frogs with a long head and bullet-shaped body. The upper lip is usually white. The limbs and the body are gracile. There are many accessory body glands. The dorsum is shagreened and with fine mottling. There may be small, round glands which may be tipped with spicules. The dorsolateral folds are thin or consist of a line of warts. The diagnostic characters of ''Chalcorana'' are the first finger being no longer than the second one, large finger discs (at least twice the finger width), and

humeral The humerus (; : humeri) is a long bone in the arm that runs from the shoulder to the elbow. It connects the scapula and the two bones of the lower arm, the radius and ulna, and consists of three sections. The humeral upper extremity consists of ...

gland that is ⅓–½ of the length of the upper arm.

Species

There are 10 species: The AmphibiaWeb lists also ''Chalcorana kampeni'', which the Amphibian Species of the World considers a

synonym A synonym is a word, morpheme, or phrase that means precisely or nearly the same as another word, morpheme, or phrase in a given language. For example, in the English language, the words ''begin'', ''start'', ''commence'', and ''initiate'' are a ...

of '' Sumaterana crassiovis''.

References

{{Taxonbar, from=Q20722208 True frogs Amphibian genera Amphibians of Asia