House dust mite
Scientific Name: Dermatophagoides pteronyssinus / Dermatophagoides farinae
Order & Family: Sarcoptiformes / Pyroglyphidae
Size: 0.2–0.3 mm in length (microscopic)

Natural Habitat
Found indoors in high-humidity areas, particularly in upholstered furniture, carpets, mattresses, and bedding.
Diet & Feeding
Mainly detritivorous, feeding on organic detritus such as flakes of shed human and animal skin.
Behavior Patterns
They prefer warm, moist environments and survive by absorbing water from humidity in the air; they aggregate in dark areas where food sources are abundant.
Risks & Benefits
They do not bite but their feces and body parts contain enzymes (Der p 1) that are major triggers for asthma, eczema, and allergic rhinitis in humans.
Identified on: 1/30/2026