Fungus Gnat
Scientific Name: Sciaridae or Mycetophilidae (exact species not determinable from image)
Order & Family: Order: Diptera, Family: Sciaridae (dark-winged fungus gnats) or Mycetophilidae (true fungus gnats)
Size: Typically 2-8 mm (adults are small, often 2-3 mm)
Natural Habitat
Damp, humid environments, commonly found indoors near potted plants, greenhouses, and other areas with moist soil or decomposing organic material.
Diet & Feeding
Larvae primarily feed on fungi, decaying plant matter, and plant roots, especially fine root hairs. Adults do not feed significantly or at all.
Behavior Patterns
Fungus gnats are attracted to light and moisture. Adult fungus gnats are short-lived. Larvae develop in moist soil or growing media, feeding on fungi and organic matter. They are generally weak fliers and often found near potted plants.
Risks & Benefits
Potential risks include being a nuisance, especially indoors. For plants, heavy larval infestations can damage roots, especially in seedlings, leading to wilting or stunted growth. They are generally not harmful to humans. Benefits are negligible in cultivated environments; in natural ecosystems, they play a minor role in decomposition.
Identified on: 8/29/2025