IUCN threat status:

Least Concern (LC)

Comprehensive Description

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This frog is medium to large-sized, with males reaching 42-52 mm in SVL and females measuring 75-80 mm in SVL. It is the only Bornean frog with recessed tympana. The snout is rounded. Hind limbs are long. Both finger and toe tips are expanded, with the digital pads slightly pointed in shape. Toes are fully webbed, with webbing extending to the base of the pads. Dorsally the skin is smooth; the sides of the body have small, rounded tubercles, and the sides of the head are roughened (Inger and Stuebing 2005).

The dorsal surface of the body and head is chocolate brown. In contrast, the sides of the body and head, as well as the upper surfaces of the limbs, are tan with darker brown bars or spots. Ventral surfaces are white or yellowish orange. The iris is bicolored, with the upper half light gold and the lower half brown. (Inger and Stuebing 2005).

This species has large tadpoles, some of the largest of Bornean anurans, reaching up to 70 mm. An abdominal sucker is present, allowing the larvae to adhere to rocks in fast-moving currents. The caudal muscle has light spots on a dark background. Caudal fins also have a dark background, with a light band along the base and light spots on the margin (Inger and Stuebing 2005).


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