Community identification
Scabies mite
Sarcoptes scabiei var. hominis
- Order & Family
- Order: Sarcoptiformes, Family: Sarcoptidae
- Size
- 0.30 to 0.45 mm long (females); males are about half that size and barely visible to the naked eye.
Natural Habitat
The epidermis (outer layer) of human skin, specifically burrows within the stratum corneum.
Diet & Feeding
Feeds on dissolved skin cells and extracellular fluid by secreting enzymes that dissolve skin tissue.
Behavior Patterns
Female mites burrow under the skin to lay eggs. They move at a rate of 2-3 cm per minute but only on the surface; once burrowed, they remain there for their 1-2 month lifespan.
Risks & Benefits
Risks include intense itching (allergic reaction to mite proteins/feces), secondary bacterial infections (like impetigo) from scratching, and highly contagious transmission through skin-to-skin contact. No known ecological benefits.