Kalophrynus minusculus
Range
Endemic to extreme western Java and south-eastern Sumatra
Size
Males to 25mm
The small sticky frog, or dwarf sticky frog, is a frog in the family Microhylidae, endemic to Indonesia and occurring on extreme western Java and on the south-eastern tip of Sumatra. It is a relatively small frog, as its name suggests: adult males grow to 25 mm (Wikipedia, general species account).