Phorid Fly (Scuttle Fly)

Scientific Name: Family Phoridae (e.g., Megaselia scalaris)

Order & Family: Order: Diptera, Family: Phoridae

Size: 0.5 mm to 6 mm (most common species are around 2-3 mm)

Phorid Fly (Scuttle Fly)

Natural Habitat

Decaying organic matter, drains, sewers, moist soil, and indoor areas like kitchens and bathrooms.

Diet & Feeding

Larvae feed on decomposing plant or animal matter, fungi, and bacteria. Adults feed on nectar and honeydew.

Behavior Patterns

Characterized by a unique running habit (scuttling) across surfaces rather than flying immediately when disturbed. They have a distinct hump-backed appearance.

Risks & Benefits

Potential risk for mechanical transmission of bacteria and pathogens due to their association with waste and decay; they can be a significant nuisance in homes and food facilities.

Identified on: 5/31/2026