Sphaenorhynchus platycephalus was briefly described on the basis of a single specimen, with only "S-Amerika" as its locality. Although it has been regarded as a distinct species, compelling evidence is lacking. A comparison of all currently described species of Sphaenorhynchus, including type specimens of several species, allowed us to provide morphological evidence that S. platycephalus and S. orophilus are conspecific, with S. orophilus being a junior synonym of S. platycephalus. Harding

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... ) concluded that the female holotype (snout-vent length [SVL] 33.0 mm, labeled IZUW 90) of Hylopsis platycephalus was assignable to the hylid genus Sphaenorhynchus Tschudi, 1838. Consequently, he considered Hylopsis Werner, 1894 to be a junior synonym of Sphaenorhynchus Tschudi, 1838 and established the new combination Sphaenorhynchus platycephalus (Werner, 1894). Harding (1991:417) also provided evidence to distinguish S. platycephalus from the 10 congeneric species recognized at that time, including S. bromelicola