Parallel measurements of A. atropos with two microphonesA single male with proboscis and with cut off proboscis (April 2015)

Parallel measurements with two microphones (see Methods section):

a) Brüel & Kjaer: 3.15 – 20 kHzb) Microtech Gefell: 5 Hz – 100 kHz)

This appendix reports the results of the Brüel & Kjaer microphone. Results of the Microtech Gefell microphone are reported in Fig. 5.

Brüel & Kjær microphone, measurement 1 (with proboscis)Total 14 seconds, 54 squeaks (4 shown)

Wave form and spectogramm (1 second)

Frequency analysis: First squeak, phase 1, central part (7.588 kHz)

Frequency analysis: First squeak, phase 2, first half, central part (8.7 kHz, 17.3 kHz, 26.0 kHz)

Brüel & Kjær microphone, measurement 2 (with proboscis)Total 18 seconds, 68 squeaks (4 shown)

Wave form and spectogramm (1 second)

Frequency analysis: First squeak, phase 1, central part (7.798 kHz)

Frequency analysis: First squeak, phase 2, central part (9.4 kHz, 18.9 kHz, 28.2 kHz)

Brüel & Kjær microphone, measurement 3 (without proboscis)Total 7 seconds, 15 squeaks (4 shown)

Wave form and spectogramm (1 second)

Frequency analysis: First squeak, phase 1, central part (6.299 Hz, 8.951 Hz, 15.4 kHz, 25.4 kHz, 28.2 kHz)

Frequency analysis: First squeak, phase 2, first half, central part (7.5 / 15.0 / 22.2 / 29.3 kHz)

Brüel & Kjær microphone, measurement 4 (without proboscis)Total 18 seconds, 68 squeaks (4 shown)

Wave form and spectogramm (1 second)

Frequency analysis: first squeak, phase 1, central part (6.9 / 9.2 /13.0 / 27.4 kHz)

Frequency analysis: first squeak, phase 2, central part (6.4 / 8.5 / 10.6 / 12.8 / 14.9 kHz)