the ones that spread diseases like yellow and dengue fever – alter their wing vibrations in a mating signal. Scientists say that the annoying buzzing sounds mosquitoes make help males home in on female mosquitoes. The insects even alter the frequency of their wing beats, with females typically having a frequency of about 400 beats per second and the males approximately 600. When a courting pair encounter one another, they adjust the beats of their wings until there was a harmonic of about 1200 vibrations per second – or hertz – an overtone of both the 400 and 600 beats. __
