Human Itch Mite
Scientific Name: Sarcoptes scabiei var. hominis
Order & Family: Order Sarcoptiformes; Family Sarcoptidae
Size: 0.3 to 0.45 millimeters (adult females); males are roughly half that size
Natural Habitat
Human skin, specifically within the epidermis (outermost layer)
Diet & Feeding
Skin cells and extracellular fluid (serum) of the human host
Behavior Patterns
The mite burrows into the skin to lay eggs, creating tiny zigzag tracks or lines. The itching is caused by an allergic reaction to the mite's proteins and excrement.
Risks & Benefits
Causes Scabies, a highly contagious skin infestation. Risks include intense itching, skin rashes, and potential secondary bacterial infections from scratching. There are no ecological benefits to humans.
Identified on: 3/3/2026