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Fig. 1. Spectral peak position and relative amplitude (re: 0 dB dominant frequency)
of a naturally emitted female calling song recorded simultanously on the
pronotum of a singing female (A), and on a leaf (B), ipsilateral stalk (C) or
stem (D). Values (mean ± S.D.) were calculated
for 10 pulse trains emitted by four females, each singing on a different bean
plant. (E) Comparison of spectra of a female calling-song pulse train recorded
as vibrations of the pronotum (black) of a female singing on a plant and as
vibrations of a loudspeaker membrane (grey). (F) Spectra of simultaneously
recorded female calling-song pulse train recorded from the pronotum of the
singing female (black) and the leaf immediately below (grey).
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