Figure 5
From: A meal or a male: the ‘whispers’ of black widow males do not trigger a predatory response in females
Courtship vibrations of male Tegenaria agrestis . For each of the courtship vibrations including (1) palp drumming, (2) walking, drumming and tapping, (3) jerks, walking, drumming and tapping, and (4) stretches produced by courting Tegenaria agrestis males on empty webs of conspecific females, the upper panel depicts vibrations in the time domain and the lower panel depicts vibration in the frequency domain. The insert in (1) depicts the amplitude of palp drumming (maximum baseline-to-peak amplitude = 0.3 mm/s) magnified 25 times.