Human itch mite
Scientific Name: Sarcoptes scabiei var. hominis
Order & Family: Order: Sarcoptiformes; Family: Sarcoptidae
Size: Microscopic; females are approximately 0.30–0.45 mm long, while males are about half that size.
Natural Habitat
The epidermis (outer layer of skin) of humans, specifically burrowing within the stratum corneum.
Diet & Feeding
The mite feeds on human skin cells and extracellular fluid by secreting enzymes that dissolve the tissue.
Behavior Patterns
The female mite burrows into the skin to deposit eggs. This triggers a delayed hypersensitivity reaction. Transmission typically occurs through prolonged, direct skin-to-skin contact.
Risks & Benefits
Risks include scabies, a highly contagious skin infestation causing intense itching and a pimple-like rash. Scratching can lead to secondary bacterial infections like impetigo. There are no known benefits to humans or ecosystems.
Identified on: 2/16/2026