Figure 2 in Courtship song of the South African lacewing Chrysoperla zastrowi (Esben-Petersen) (Neuroptera: Chrysopidae): evidence for a trans-equatorial geographic range?

Figure 2. Oscillograms (volts on y-axis) and sonagrams (Hertz on y-axis) of typical solo (non-dueting) vibrational songs. (A) Cc5, five volleys or shortest repeated units (SRUs); (B) Cc5, detail of a single volley/SRU; (C) C. zastrowi, five volleys or shortest repeated units (SRUs), drawn to same time scale as A. Song features discussed in the text are labeled.