Review of bioacoustical traits in the genus Physalaemus Fitzinger, 1826 (Anura: Leptodactylidae: Leiuperinae) Author Hepp, Fábio Author Pombal, José P. text Zootaxa 2020 2020-01-20 4725 1 1 106 journal article 24303 10.11646/zootaxa.4725.1.1 67d90a4f-f853-4561-ae9a-c0f596d948ca 1175-5326 3612996 B137F19A-2C50-476C-8F13-4F049253B361 Physalaemus gracilis species group Only one call type was recorded for this group. All species have calls composed of a single harmonic note, with fundamental frequency around 500 Hz. All species have calls with S-shaped harmonics, resulting from a general downward FM with an up-downward FM segment in the beginning of the call. This pattern is less clear in P. lisei and P. jordanensis due to less defined initial FM in the former, and to discontinuity of harmonics as a result of pulse- PAM in the latter. Physalaemus jordanensis is the only species of the group with pulse-PAM and PFM in its call. The call envelope is considerably variable within the species of this group.