Figure 8

Harmonic frequency differences of less than 50 Hz between male and artificial female flight tones occur before and during mating interactions. Harmonic frequency difference outcome scenarios (1–12, from most to least common scenario) were analyzed by difference category (vertical stacked bars). Horizontal bars represent the set size of frequency difference outcome scenarios by interaction phase: immediately before (striped bars) or during (solid bars) acoustic mating interactions, during either the female baseline swarm tone (blue bars) or mating interaction tone (gray bars) playback periods. For an illustration of the male flight tone sampling method during these interaction phases, see Fig. 7A. Letters above the vertical stacked bars represent B-H pos-hoc test p-values for comparisons between outcome scenarios (uppercase) and letters in parenthesis within bar categories represent B-H post-hoc test p-values for comparisons between frequency difference categories within outcome scenarios (lowercase).