Widely available in India, to attract-and-trap the male fruit flies, is the pheromone (methyl eugenol) lure. There appears to be no pheromone for the female mosquitoes to attract the males, or vice versa. Signalling by sound waves and wing beat frequency is how the swarm of male mosquitoes attract more males and females.
Why not record the real ‘song’ from a mosquito swarm and replay it on the field? Hearing the replayed Mosquito Swarm Song, the males will fly to join the Imaginary Swarm I-Swarm and the females will fly to meet the imaginary males. Traps at the I-Swarm, similar to the fruit fly pheromone traps or fanned net traps, will despatch the real mosquitoes to their end.
Let us audio record a real mosquito swarm using a mobile phone. Then we audio replay the record on a I-Swarm trap, again with the mobile phone. Will mosquitoes rush to the I-Swarm? If the I-Swarm is placed at the same location where the real swarm was formed, the mosquitoes should reach there with or without I-Swarm. But if the I-Swarm is placed at a location where swarms were not seen earlier, but mosquitoes arrive then the I-Swarm works!