Raorchestes nerostagona is a species of frog in the Rhacophoridae family.It is endemic to the Western Ghats, India. It is sometimes known as the Kalpetta yellow bush frog. It is also called the lichen bush frog for its patchy lichen like patterning that make it cryptic. First described in 2005 based on a specimen obtained in Kalpetta, the species has subsequently found to be distributed in many parts of the Western Ghats.