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. 2012 May 9;9(75):2591–2602. doi: 10.1098/rsif.2012.0186

Figure 3.

Figure 3.

(a–c) Colour-coded pressure fields in dB SPL of the first harmonic (wing beat frequency) around a stationary humming blowfly (N = 3, n = 15). (a) Vertical symmetry plane of the fly (x–z-plane). (b,c) Pressure field in the horizontal planes (b) 10 mm and (c) 50 mm below the fly's thorax. (a′–c′) Same for the second harmonic (double wing beat frequency) (N = 3, n = 15). (a′) Vertical symmetry plane of the fly (x–z-plane). (b′,c′) Pressure field in the horizontal planes (b′) 10 mm and (c′) 50 mm below the fly's thorax.