Fungus Gnat

Natural Habitat

Damp environments, particularly in household potting soil, greenhouses, and moist organic matter.

Diet & Feeding

Adults primarily consume liquids like water or nectar; larvae feed on organic matter, fungi, and sometimes plant roots.

Behavior Patterns

Adults are weak fliers and are often seen walking on surfaces or flying erratically near light sources or soil. They have short lifespans as adults, focusing on reproduction.

Risks & Benefits

Generally harmless to humans but can be a persistent household nuisance. High larval populations can damage the roots of houseplants; they are important decomposers in the ecosystem.

Identified on: 4/22/2026