Community identification
Human Itch Mite
Sarcoptes scabiei var. hominis
- Order & Family
- Order Sarcoptiformes; Family Sarcoptidae
- Size
- 0.3 to 0.45 mm long (adult females); males are roughly half that size
Natural Habitat
Human skin, specifically within the stratum corneum (outer layer of epidermis)
Diet & Feeding
Living skin tissue and fluids of the host
Behavior Patterns
Adult females burrow into the skin to lay eggs. The life cycle involves egg, larva, nymph, and adult stages, occurring entirely on the human host. They are highly contagious and spread through direct skin-to-skin contact.
Risks & Benefits
Causes Scabies, a skin infestation characterized by intense itching and a pimple-like rash. Secondary bacterial infections can occur from scratching. There are no ecological benefits to this parasite.