[turbohedgehog]

I believe one way is to generate a frequency similar to female wingbeat frequency that attracts male mosquitoes and separate them that way. I am unsure if there is a difference in the frequency between genders.

[diggernet]

There absolutely is a difference in sound. If you hear a mosquito, it's female. Males are silent.

[fujipadam]

This is how the photo fence from intellectual ventures detects and destroys female mosquitoes.Unfortunately they never released that tech as open source

[dalacv]

Lesbian mosquitos...hello?

[kijin]

As long as they're inclined to seek out females in the wild and spread the mosquito STD, they could be just as useful as males :)