Movie S2

The detail shows the opposite movements of the mesonotal sclerites of the fly. With slow motion video recording (100 frames per second) the movements of the fly are slowed down when played back with 25 Hz making the opposite movements of the scutellum and scutum visible. When the scutellum, marked by a pink spot, moves downwards the scutum, marked by a green spot, moves upwards and the reverse, like a teeter.

X-ray computed tomography study of the flight-adapted tracheal system in the blowfly Calliphora vicina, analysing the ventilation mechanism and flow-directing valves

Lutz Thilo Wasserthal, Peter Cloetens, Rainer H. Fink, and Lennard Knut Wasserthal

Journal of Experimental Biology 2018. 221:None-None; doi: 10.1242/jeb.176024