Dust mite
Scientific Name: Dermatophagoides pteronyssinus (European) or Dermatophagoides farinae (American)
Order & Family: Order: Sarcoptiformes; Family: Pyroglyphidae
Size: 0.2–0.3 mm in length (microscopic)
Natural Habitat
Found indoors worldwide, primarily in carpets, mattresses, upholstered furniture, and bedding where humidity is high.
Diet & Feeding
Feeds on dander (dead skin cells) shed by humans and animals, as well as some mold.
Behavior Patterns
Thrive in warm, humid environments (70-80% humidity); they do not drink water but absorb it from the air. Their life cycle from egg to adult takes about 1 month.
Risks & Benefits
Risks include being a major trigger for asthma, eczema, and allergic rhinitis due to proteins in their waste. They provide no significant benefits to humans.
Identified on: 4/25/2026