Lovebugs (Plecia nearctica hardy) grow under and consume partially decayed plant matter when they are in the larvae stage. Adult lovebugs may feed on pollen or nectar alone or when joined together in copula when they are mating.
Female lovebugs lay their eggs on or in moist soil that is covered in decaying vegetation or vegetable matter. A steady food supply, good soil temperatures and satisfactory moisture levels increase the chances of the larva's survival. After developing under decaying vegetation, lovebugs enter the pupal stage, which lasts seven to nine days. When male lovebugs emerge from the pupal stage and become fully scletorized, which takes about 2 hours, they then hover above their emergence site and begin seeking out a female partner.