FIGURE 2 in Taxonomic, bioacoustic and faunistic data on a collection of Tettigonioidea from Eastern Congo (Insecta: Orthoptera)

FIGURE 2. Oscillograms of stridulatory movements and song [synchronous registration of left tegmen movement (upward deflection represents opening, downward closing) and sound; 15 s sequence]. In the first half of the recording of H. leggei, the stridulatory movement is superimposed by a slight body movement, mimicking a continously increasing opening of the tegmina.