Vertebrate fauna of SE Asia
  

 

Home  
覧覧覧覧覧  
SE Asia fauna ...  
   
Primates
 Carnivorans
 Large Mammals
 Small Mammals
 Mammal calls
 Bats
覧覧
Birds
覧覧
 Snakes
 Lizards & Crocodilians
 Turtles
覧覧
 Amphibians
 Tadpoles
 Frog calls
覧覧
Freshwater Fishes
 Marine & Brackish Fishes
覧覧
Species Lists
 





 


 
覧覧覧覧覧  
SE Asia Vert Records (SEAVR) ...  
   
Philippines Records
  Indochina Records
  Indonesia & PNG Records
 
覧覧覧覧覧  
New Guinea herptiles ...  
Snakes   Lizards   Frogs  
覧覧覧覧覧  
   
  New pages ...
 
 
     
 
     
 
     
 
覧覧覧覧覧  
 

Search this site ...

 
 


   

 
  覧覧覧覧覧  
  Email :


Text and photos by Nick Baker, unless otherwise credited.
Copyright ゥ Ecology Asia 2020

 
 
     
   
   

 

   
   
 
File-eared Tree Frog
   
   

Fig 1


Fig 2


Fig 3


Fig 4


Fig 5


 

Family : RHACOPHORIDAE
Species : Polypedates otilophus
Size (snout to vent) : Female 10 cm, Male 8 cm

Also known as the Borneo Eared Frog, this large tree frog inhabits lowland rainforest up to elevations of around 400 metres. It is most commonly found grouped around suitable breeding ponds, clinging to nearby vegetation a few metres from the ground.

The species is easily identified by its large size and by the prominent ridges which lie above the eye and external ear-drum or tympanum. Another flap of skin extends horizontally beneath the tympanum.

Its dorsal surface is pale yellow brown adorned with dark brown stripes. The flanks show similar colour and patterning but the dark stripes are more thin. On the inner thighs and legs there is strong black banding on a white background. Its eyes are large with a horizontal iris.

Like other species of tree frog, their eggs are fertilized and develop in foam nests above suitable water bodies. The tadpoles will hatch and drop into the water below, or get washed down by heavy rain. Fully-grown tadpoles may reach 6 cm in length.

Polypedates otilophus occurs only on the island Borneo. A closely related species, Polypedates pseudotilophus, occurs on the island of Sumatra (Matsui et al, 2014): the latter was formerly identified as part of Polypedates otilophus, but has sufficient genetic divergence to be considered a separate species.


Fig 1 : Example from Lambir Hills, Sarawak, Malaysian Borneo.

Fig 2 : Dark specimen with well-developed dorsal stripes.

Fig 3 : Pale specimen clinging to a thick stem.

Fig 4 : Close-up of the head showing the 'file' ears.

Fig 5 : Dorsal view, showing lower ear flaps, and expanded toes.

Figs 2 to 5 photographed at Danum Valley, Sabah, Borneo,


References : H3, H4

Matsui, M., Hamidy, A., & Kuraishi, N. (2014). A new species of Polypedates from Sumatra, Indonesia (Amphibia: anura). Species Diversity, 19(1), 1-7.