Dust Mite
Scientific Name: Dermatophagoides pteronyssinus
Order & Family: Sarcoptiformes; Pyroglyphidae
Size: 0.2–0.3 mm (micrometers), making them nearly invisible to the naked eye.
Natural Habitat
Indoor environments, primarily found in mattresses, upholstered furniture, carpets, and pillows where humidity is relatively high.
Diet & Feeding
Dead skin cells (dander) shed by humans and pets.
Behavior Patterns
They prefer warm, moist environments (70-80% humidity) and avoid light by burrowing deep into fabric fibers. They absorb water from the air rather than drinking.
Risks & Benefits
Risks include being a major source of indoor allergens, triggering asthma and allergic rhinitis. They have no direct benefits to humans, though they decompose organic matter in household dust.
Identified on: 3/12/2026