Siamese cascade frog

It is endemic to western and northern Thailand and known from Kanchanaburi, Prachuap Kiri Khan, and Chiang Mai Provinces.

[5][6] Males in the type series measure 54–55 mm (2.1–2.2 in) in snout–vent length.

The head is narrow with obtusely pointed snout.

[2] Wijayarana melasma live near streams and waterfalls in moist lowland evergreen and semi-evergreen forestat elevations of 200–600 m (660–1,970 ft) above sea level.

[1][2] The known locations are within protected areas (including Chaloem Rattanakosin National Park and Kaeng Krachan National Park), although habitat change from agriculture, fire, tourism development, and illegal logging continues to occur.