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Black-spotted Rock Frog
   
   

Fig 1


Fig 2




 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Family : RANIDAE
Species : Staurois guttatus (formerly part of S. natator)
Size (snout to vent) :
Female 5.5 cm,  Male 3.7 cm

The Black-spotted Rock Frog is one of six species (Arifin et al, 2011) in the genus Staurois which are also known as 'Splash Frogs'. Frogs of this genus inhabit fast-flowing, clear, rocky streams in lowland or hilly rainforest in Borneo and the Philippines.

Staurois guttatus is a relatively small frog, with a maximum snout-vent length of 3.7 cm in males, and 5.5 cm in females. Its body is slender, and its head is slightly larger than the body. Its hind limbs are long and slender, and its forelimbs relatively short.

Its body and upperside of its limbs is covered with abundant small, rounded warts. Its ground colour is medium brown to olive green, patterned with numerous dark blotches. Its underside is pale green or yellowish.

The tadpoles are small and colourless, but appear reddish as the blood can be seen through the skin.

This species occurs in many parts of Borneo, including the territories of Kalimantan (Indonesia), Sabah and Sarawak (Malaysia) and Brunei.


Figs 1 and 2 : Specimen from Ulu Temburong National Park, Brunei, Borneo found near a small waterfall in a deeply incised stream gully.


References : H19

Arifin, U., Iskandar, D. T., Bickford, D. P., Brown, R. M., Meier, R. & Kutty, S. N. (2011). Phylogenetic relationships within the genus Staurois (Anura, Ranidae) based on 16S rRNA sequences. Zootaxa, 2744(1), 39-52.