Fungus Gnat

Scientific Name: Sciara spp.

Order & Family: Diptera: Sciaridae

Size: 2 to 3 mm

Fungus Gnat

Natural Habitat

Damp soil, decaying organic matter, and indoor/outdoor gardens

Diet & Feeding

Adults do not feed significantly; larvae consume fungi, algae, and organic debris in soil

Behavior Patterns

Often seen flying or crawling near the soil surface; life cycle includes egg, larva, pupa, and adult stages completed in 3-4 weeks

Risks & Benefits

Generally harmless to humans but larvae can damage plant roots if populations are high; they serve as a food source for spiders and predatory insects

Identified on: 6/24/2026