Watch Online Free on Watchseries. Though mosquitoes have almost as many sensory auditory cells as we do, their hearing is for the sole purpose of finding a mate. Individual males (more wingbeats per second, higher frequency) and females (slower, lower) adjust their flight tones until a pleasing harmony is achieved. These boys have found a pitch irresistible to one sex—hopefully females, for malaria is growing in the DRC, and only pregnant females bite. Eros and Thanatos for the mosquitoes; for the boys, a small but satisfying cull of the horrible hordes.