Fungus Gnat Larva

Natural Habitat

Moist soils, compost, decaying organic matter, and indoor potted plants.

Diet & Feeding

Primarily feeds on fungi, algae, and decaying plant material; may consume plant roots if populations are high.

Behavior Patterns

They are phototactic (attracted to light) and require high humidity. They undergo complete metamorphosis, spending most of their life cycle in the larval stage in damp substrates.

Risks & Benefits

Risk: Can damage root systems of houseplants and seedlings. Benefit: They are important decomposers in natural ecosystems, helping break down organic matter.

Identified on: 3/13/2026