Fungus Gnat (likely Sciarid Gnat)

Natural Habitat

Damp, organic-rich environments, often indicated by the presence of potted plants, moist soil, or decaying organic matter. Indoors, they are commonly found near houseplants.

Diet & Feeding

Adult fungus gnats typically do not feed or feed on liquids like water and nectar. Their larvae, however, feed on fungi, decaying organic matter, and plant roots.

Behavior Patterns

Adults are weak fliers and are often seen walking or flying near potted plants or windows. They are attracted to light. Females lay eggs in moist soil. The larval stage is spent in the soil, feeding. The entire life cycle can be completed in about 2-4 weeks.

Risks & Benefits

Risks: Larvae can damage plant roots, especially in seedlings or young plants, leading to wilting, stunted growth, or death. Adults are primarily a nuisance. They do not bite or transmit diseases to humans. Benefits: In nature, they contribute to the decomposition of organic matter, aiding in nutrient cycling.

Identified on: 9/17/2025