FIGURE 8. Hyalessa fuscata. Echemes structure. A in Description of a new species of the genus Hyalessa China (Hemiptera: Cicadidae: Sonatini) from Yunnan, China, with a key to the species of Hyalessa and a calling song analysis for two Hyalessa species

FIGURE 8. Hyalessa fuscata. Echemes structure. A, Power frequency spectrum represented with overlay of 47 spectra computed from echemes with high amplitude oscillations showing dominant frequencies marked by F1, F2, F3 and F4. B, Detailed oscillogram showing the first echeme with low amplitude oscillations and the second echeme with high amplitude oscillations. C, Power frequency spectrum represented with overlay of 38 spectra computed from echemes with low amplitude oscillations showing dominant frequencies marked by F1 and F2.