FIGURE 4 in A new species of genus Hoplobatrachus (Anura, Dicroglossidae) from the coastal belt of Bangladesh

FIGURE 4. Sound spectrograms showing advertisement call structure of H. litoralis. The same call analyzed by FlatTop (A) and Hamming window (B). Abscissa: time in s. Ordinate: frequency in kHz. The continuous broad band at about 2.5 kHz is chirps of an insect. The call of several male individuals of H. litoralis was recorded from Ukhia, Cox's Bazar district on 19 June, 2011 just after sunset and their voucher specimen numbers are involved in those of molecular analyses, but not specified.