Calohyla sundana Peters, 1867 Metaphrynella sundana (Borneo treefrog or Bornean tree hole frog) is a species of frog in the family Microhylidae.

It is endemic to Borneo and found in Brunei, Indonesia, and Malaysia.

[2] Metaphrynella sundana are small frogs; adults measure up to about 25 mm (0.98 in) in snout–vent length.

[4] The species' natural habitats are lowland primary rainforests to about 700 m (2,300 ft) asl.

Reproduction takes place in tree holes with water.