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High speed video observations of free flying male Aedes aegypti mosquitoes,the dengue and yellow fever vector, along with custom measurement methods,enable measurement of wingbeat frequency, body position and body orientation ofmosquitoes during flight. We find these mosquitoes flap their wings atapproximately 850 Hz. We also generate body yaw, body pitch and wing deviationmeasurements with standard deviations of less than 1 degree and find thatsideways velocity and acceleration are important components of mosquito motion.Rapid turns involving changes in flight direction often involve large sidewaysaccelerations. These do not correspond to commensurate changes in body heading,and the insect's flight direction and body heading are decoupled during flight.These findings call in to question the role of yaw control in mosquito flight.In addition, using orientation data, we find that sideways accelerations arewell explained by roll-based rotation of the lift vector. In contrast, theinsect's body pitch angle does not correlate with its forward acceleration.This implies that controlling body roll is important to mosquito dynamics. Thedynamic importance of stabilizing body pitch and body yaw is less clear.

Free flight of the mosquito Aedes aegypti