Figure 19 in Maratus tiddalik, a new peacock spider in the flavus group from Western Australia (Araneae: Salticidae: Euophryini)

Figure 19. Sequential video frames (25 fps) showing vertical bobbing or vibration of the opisthosoma (arrows) during the two leg III courtship display of a male Maratus tiddalik. Here 12 cycles are shown over 2.44 seconds, or ~5/s. However this movement was not continuous and active bouts took place at ~12.5/s. Blurring in the down position (e.g., frames 22, 24) corresponded to a much higher rate of vibration (Figure 21).