Behavior and Diet
Fungus gnats are the most common species of gnat. They’re attracted to fungi such as mold, decaying matter and mushrooms, as well as sources of moisture. Female gnats lay their eggs in moist soil and the larvae feed on the root systems of plants, interfering with the plant’s ability to absorb water and nutrients. Gnats are particularly notorious among orchid growers who prefer to keep their prized blossoms well-watered.
Adult fungus gnats are attracted to light and often swarm around indoor light sources. They’re especially active during warm, moist autumn weather, when they can infest wet leaf piles during the day.
Scientific Order: Diptera
Common Family: Six of the seven families within the superfamily Sciaroidea, particularly the family Sciaridae