Fungus Gnat

Natural Habitat

Damp, moist environments especially rich in decaying organic matter; commonly found indoors near houseplants, in potting soil, or anywhere with high humidity and fungal growth.

Diet & Feeding

Larvae feed on fungi and decaying organic matter in soil; adult gnats do not feed significantly and primarily focus on reproduction.

Behavior Patterns

Adults are attracted to light and often seen flying erratically around plants or windows. Larvae develop in moist soil. They have a short life cycle (around 3-4 weeks from egg to adult).

Risks & Benefits

Risks: Larvae can damage plant roots, especially in seedlings and young plants, leading to wilting, stunted growth, or plant death. They can be a nuisance indoors. Benefits: Adults are minor pollinators; larvae contribute to decomposition in natural environments.

Identified on: 9/17/2025