About Metaphrynella sundana (Peters, 1867)
Metaphrynella sundana, also known as the Bornean tree hole frog, is a species of small frog. Adult individuals reach a maximum snout–vent length of approximately 25 mm (0.98 in). Their bodies are stocky, and their limbs are moderately short. The skin is covered in rounded tubercles, which are larger on the sides of the body. There is considerable variation in both the species' colouration and skin texture. Males of this species have a median subgular vocal sac. At night, males call from tree holes that sit roughly 1 to 5 meters (3 feet 3 inches to 16 feet 5 inches) above the ground, and they can adjust their call to match the resonance frequency of the specific tree hole they occupy. The natural habitats of Metaphrynella sundana are lowland primary rainforests, occurring up to around 700 m (2,300 ft) above sea level. The species is common in both primary and secondary rainforests. Reproduction for this species occurs in water-filled tree holes. Metaphrynella sundana is currently threatened by habitat loss caused by clear-cutting.
