Abstract
The advertisement calls of 18 species of Hyla occurring in Bolivia are described. Information on the calling behavior of each species is provided. A characteristic audiospectrogram and oscillogram are presented for each species as well as information about the spectral and temporal features of the calls. Numerical characteristics of the sounds are used to generare a phenogram of the mating calls. Call characteristics agree with the currently accepted phylogeny of South American species of Hyla. Some species with similar calls may breed synchronously and syntopically
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