Male mosquitoes feed only on plant juices, such as nectar, to get the sugar they need for energy and survival. As males do not bite, they cannot transmit diseases.
Female mosquitoes, on the other hand, need protein from blood for the development of their eggs. To obtain blood, females seek out and bite hosts such as humans, and may transmit disease in the process.
Using a microscope or magnifying glass, here are three ways you can tell harmless male mosquitoes apart from female foes: