Polypedates otilophus (also known as the file-eared tree frog,[2][3]Borneo eared frog, or bony-headed flying frog[4]) is a species of frog in the family Rhacophoridae. It is endemic to Borneo where it is widespread and found in Brunei, Indonesia, and Malaysia,[2] typically in the lowlands but sometimes as high as 1,100m (3,600ft)above sea level.[3] This species has prominent, sharp ridges behind the eye, above the ear, referred to in its names.[3][4]
Males measure up to 80mm (3.1in) and females up to 100mm (3.9in) in snout–vent length.[3] The body is robust and dorsally lemon yellow in color, with many thin, black stripes; also the thighs have many black bars. The tympanum is conspicuous, with a serrated bony crest above it (the "ear"). Fingertips are expanded into large discs; those on the toes are smaller. The fingers have only rudimentary webbing whereas the toes are moderately webbed.[5] The tadpoles are yellowish green above and white below, acquiring the stripes seen in adults well before metamorphosis.[5] The largest tadpoles are 60mm (2.4in) in total length.[3]
Polypedates otilophus typically occurs in secondary habitats, at the edges of primary forest, and also in villages.[5] They are most easily spotted at suitable breeding ponds where adults perch on vegetation 1–4 m above the ground.[3] It is not considered a threatened species by the IUCN.[1]
1 2 3 4 Frost, Darrel R. (2016). "Polypedates otilophus (Boulenger, 1893)". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 26 July 2016.
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