Because females are the ones that bite and transmit malaria. https://www.cdc.gov/malaria/about/biology/mosquitoes/index.html https://www.cdc.gov/malaria/about/

Because females are the ones that bite and transmit malaria. https://www.cdc.gov/malaria/about/biology/mosquitoes/index.html https://www.cdc.gov/malaria/about/biology/mosquitoes/index.h... Killing the males is pointless if your goal is preventing disease.