''Trachycephalus mesophaeus'' is a species of frog in the family Hylidae. It is endemic to eastern Brazil and occurs in the

Atlantic Forest The Atlantic Forest ( pt, Mata Atlântica) is a South American forest that extends along the Atlantic coast of Brazil from Rio Grande do Norte state in the northeast to Rio Grande do Sul state in the south and inland as far as Paraguay and th ...

between Pernambuco and

Rio Grande do Sul Rio Grande do Sul (, , ; "Great River of the South") is a Federative units of Brazil, state in the South Region, Brazil, southern region of Brazil. It is the Federative_units_of_Brazil#List, fifth-most-populous state and the List of Brazilian st ...

, extending inland to central Minas Gerais. It is found at elevations below . Common name Porto Alegre golden-eyed treefrog has been coined for it, Porto Alegre being its type locality. ''Trachycephalus mesophaeus'' occurs in primary and secondary forest and forest edge on vegetation near waterbodies. Breeding is explosive and takes place in both temporary and permanent ponds. The egg clutches float on the water. ''Trachycephalus mesophaeus'' is an abundant species that can be threatened by clear cutting and water pollution.

References

Trachycephalus Endemic frogs of Brazil Amphibians described in 1867 Taxonomy articles created by Polbot {{Hylidae-stub