Gnat ReproductionMating in Swarms
For some species, males assemble in large mating swarms known as ghosts. These swarms occur most commonly at dusk in large fields and above streets.Gnat Eggs
Depending on the species, gnat eggs are laid on land or water. Larvae may be immobile or capable of movement by way of rocks and water plants.Adult Gnats
Adults range in size but usually are no larger than 33 mm. The larval and adult stages of the gnat are considered both beneficial and detrimental. Some species are excellent plant pollinators and feed on crop pests such as aphids and scales. Other gnats, such as the Hessian fly, are crop pests themselves.