''Ghatixalus'' is a genus of

frog A frog is any member of a diverse and largely Carnivore, carnivorous group of short-bodied, tailless amphibians composing the order (biology), order Anura (ανοὐρά, literally ''without tail'' in Ancient Greek). The oldest fossil "proto-f ...

s in the family

Rhacophoridae The Rhacophoridae are a family of frogs that occur in tropical sub-Saharan Africa, South India and Sri Lanka, Japan, northeastern India to eastern China and Taiwan, south through the Philippines and Greater Sundas, and Sulawesi. They are commonly ...

subfamily In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end subfamily botanical names with "-oideae", and zoologi ...

Rhacophorinae The Rhacophorinae are a subfamily of frogs in the family Rhacophoridae. They range from tropical Africa and Asia to temperate China and Japan. Genera The following genera are recognised in the subfamily Rhacophorinae, representing 422 species: * ...

. They are

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

to the Western Ghats of southern India. They are the

sister taxon In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree. Definition The expression is most easily illustrated by a cladogram: Taxon A and t ...

to a larger

clade A clade (), also known as a monophyletic group or natural group, is a group of organisms that are monophyletic – that is, composed of a common ancestor and all its lineal descendants – on a phylogenetic tree. Rather than the English term, ...

consisting of ''

Chiromantis ''Chiromantis'' is a genus of frogs in the family Rhacophoridae, commonly known as foam-nest frogs or foam-nest tree frogs. It contains species from the Sub-Saharan African tropics. Following the molecular genetic study by Chen and colleagues (2 ...

'', ''

Feihyla ''Feihyla'' is a genus of frogs in the family Rhacophoridae, subfamily Rhacophorinae. They are found in southern China and Vietnam, and likely also in Laos. Its phylogenetic position is not yet fully resolved, but it is probably the sister taxon ...

'', ''

Taruga Taruga is an archeological site in Nigeria famous for the artifacts of the Nok culture that have been discovered there, some dating to 600 BC, and for evidence of very early iron working. The site is 60 km southeast of Abuja, in the Mid ...

'', ''

Polypedates ''Polypedates'' is a genus of frogs in the family Rhacophoridae, the shrub frogs and Paleotropic tree frogs. They belong to subfamily Rhacophorinae. Members of this genus are collectively known as whipping frogs. They occur in eastern and sout ...

'', and '' Rhacophorus''. The name of the genus combines words "Ghats" and "''Ixalus''". The former refers to the Western Ghats, and the latter to now-abandoned genus name that lives as the suffix in many generic names for rhacophorid frogs.

Description

''Ghatixalus'' are medium-to giant-sized frogs with adult males measuring and females adults (male SVL 38.8–82 mm, female 58.1–66.7 mm) in snout-vent length. They have a dorsal color pattern with dark brown prominent blotches. Eggs develop in foam nests followed by a free-swimming

tadpole A tadpole is the larval stage in the biological life cycle of an amphibian. Most tadpoles are fully aquatic, though some species of amphibians have tadpoles that are terrestrial. Tadpoles have some fish-like features that may not be found i ...

stage. Their habitat is associated with mountain streams throughout their life cycle.

Distribution and natural history

This exclusively Shola forest specialist genus is distributed only in the high elevations of Nilgiris and Anaimalai-Palnis, only above 1600 m asl. Most of the sightings were near streams and streamside often on bare ground, grass clumps on ground or rocks nearby. Although belonging to rather arboreal frog family, these frogs are

terrestrial animals Terrestrial animals are animals that live predominantly or entirely on land (e.g. cats, dogs, ants, spiders), as compared with aquatic animals, which live predominantly or entirely in the water (e.g. fish, lobsters, octopuses), and amphibians, ...

Species

There are only 3 recognized species in the genus ''Ghatixalus'': * '' Ghatixalus asterops'' Biju, Roelants, and Bossuyt, 2008 endemic to Upper

Palni Hills The Palani Hills are a mountain range in the southern Indian states of Kerala and Tamil Nadu. The Palani Hills are an eastward extension of the Western Ghats ranges, which run parallel to the west coast of India. The Palani Hills adjoin the hi ...

Anaimalai Anaimalai is a taluk in Coimbatore district in the Indian state of Tamil Nadu. Agricultural day work is the main occupation. Paddy, banana, sugarcane and other crops are grown in the area. Anaimalai is a pilgrimage spot, due to the worship o ...

and High Ranges. * '' Ghatixalus magnus'' Abraham, Mathew, Cyriac, Zachariah, Raju and Zachariah, 2015 endemic to the

Hills, High Ranges, Cardamom Hills,

Meghamalai Meghamalai (Tamil: மேகமலை), commonly known as the High Wavy Mountains, is a mountain range located in the Western Ghats in the Theni district near Kumily, Tamil Nadu. It is dotted with cardamom plantations and tea plantations. The ...

and Pandalam Hills * '' Ghatixalus variabilis'' (Jerdon, 1854) endemic to Upper Nilgiri Hills The Palakkad Gap is believed to be a prominent biogeographic barrier that has caused speciation between the sister species ''G. asterops'' and ''G. variabilis''.

References

External links

{{Taxonbar, from=Q2336860 Rhacophoridae Amphibians of Asia Endemic fauna of the Western Ghats Taxa named by Sathyabhama Das Biju Amphibian genera