Sphaenorhynchus planicola, the Rio lime treefrog, is a species of frog in the family Hylidae. It is endemic to southeastern Brazil and occurs in the southern Bahia, Espírito Santo, and Rio de Janeiro states at elevations below 100m (300feet) above sea level.
Its natural habitats are swamps with deep water (>50 cm). It lives in floating vegetation; the eggs are laid on a leaf surface above the water. It can also live in cattle ponds with deep water. It is a very common species, but drainage of its habitat and pollution are threats.