Slender-legged tree frogs

Osteocephalus is a group of frogs. In English, they are named the slender-legged tree frogs. They are a genus in the family Hylidae. They live in the Guianas, the Amazon Basin, Venezuela, Colombia, southeastern Brazil, and northeastern Argentina. Male frogs have warty, bumpy skin, and female frogs have smooth skin.
Species.
There are 25 species in "Osteocephalus":