ADVERTISEMENT CALLS OF BOLIVIAN LEPTODACTYLIDAE (AMPHIBIA, ANURA)

The advertisement calls of 23 Bolivian anuran species in the family Le ptodactylidae are described including information on calling behaviour . For each species, a characteristic audiospectrogram and oscillogram are presented. Numerical information about the spectral and temporal f eatures of the calls is provided and, when available, the results are compared with any previous description of the calls. A phenogram based on holistic comparisons of the mating calls (audiospectrogram correla tion) is presented for the genera Eleutherodactylus, Leptodactytus, an d Physalaemus. The intrageneric variability of four basic call paramet ers is compared. The results suggest that fundamental and dominant fre quency (and possibly duration for the genus Physalaemus) are the most likely variables to play a role in isolation of congeneric species.