Rhacophorus otilophus Boulenger, 1893, Proc. Zool. Soc. London, 1893: 527. Holotype: BMNH, by original designation. Type locality: "Bongon, N. Borneo", Malaysia.
Rhacophorus (Rhacophorus) otilophus — Ahl, 1931, Das Tierreich, 55: 137. Dubois, 1987 "1986", Alytes, 5: 77.
Polypedates otilophus — Liem, 1970, Fieldiana, Zool., 57: 98. Dring, 1982, in Anderson et al. (eds.), Gunung Mulu National Park: 293.
Bony-headed Rhacophorus (Cochran, 1961, Living Amph. World: 134).
Bongon Whipping Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 113).
File-eared Tree Frog (Das, Jankowski, Makmor, and Haas, 2007, Mitt. Hamburg. Zool. Mus. Inst., 104: 164; Das, 2007, Amph. Rept. Brunei: 74).
Central and western Java, Borneo and Sumatra.
In the Rhacophorus (Rhacophorus) leucomystax group of Dubois, 1987 "1986", Alytes, 5: 77; see comment under Polypedates. See account by Inger, 1956, Fieldiana, Zool., 34: 413; and Inger, 1966, Fieldiana, Zool., 52: 326-329. See brief account and photo by Manthey and Grossmann, 1997, Amph. Rept. Südostasiens: 129-130. Malkmus, Manthey, Vogel, Hoffmann, and Kosuch, 2002, Amph. Rept. Mount Kinabalu: 197, provided an account. Das, Jankowski, Makmor, and Haas, 2007, Mitt. Hamburg. Zool. Mus. Inst., 104: 164, provided a brief description. Das, 2007, Amph. Rept. Brunei: 74, provided a photograph and brief account. Riyanto, Kusrini, Lubis, and Darmawan, 2009, Russ. J. Herpetol., 16: 217-220, reported on geographic variation of morphology and did not find significant differences among the Javan, Bornean, and Sumatran populations although they did not coloration and skin-texture differences of the Bornean population from the others.
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