Fungus Gnat

Natural Habitat

Moist environments with decaying organic matter, especially potted plants, greenhouses, and compost piles.

Diet & Feeding

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

Behavior Patterns

Adults are weak fliers and often seen near potted plants or windows. Larvae develop in moist soil and can sometimes cause damage to plant roots if present in large numbers.

Risks & Benefits

Potential risks include being a nuisance, especially indoors, and larvae can damage plant roots in high infestations. Generally considered harmless to humans. They play a minor role in decomposition.

Identified on: 9/27/2025