Fungus Gnat
Sciaridae or Mycetophilidae (familial level)
- Order & Family
- Order: Diptera, Family: Sciaridae or Mycetophilidae
- Size
- 1/8 to 1/4 inch (2-5 mm)
Natural Habitat
Typically found in moist environments, especially where there's decaying organic matter, fungi, and damp soil. Often found indoors near houseplants due to overwatering.
Diet & Feeding
Adult fungus gnats primarily feed on fungi, decaying plant matter, and sometimes nectar. Larvae feed on fungi, decaying organic matter, and plant roots, particularly in damp soil.
Behavior Patterns
Adults are weak fliers and are often seen hovering around plants or lights. They are attracted to moisture and light. Their short lifespan (about 7-10 days) is primarily focused on reproduction. Larvae live in the soil and are responsible for any plant damage.
Risks & Benefits
Potential risks include damage to plant roots, especially seedlings and young plants, caused by the larvae. They can also be a nuisance indoors. They are generally not harmful to humans or animals, though some species can mechanically transmit plant pathogens. Benefits include their role as decomposers, helping to break down organic matter.