
Community identification
Scabies Mite (or Sarcoptes Scabiei)
Sarcoptes scabiei var. hominis
- Order & Family
- Order Sarcoptiformes, Family Sarcoptidae
- Size
- Microscopic; females are 0.3–0.45 mm long, males are smaller at 0.2–0.35 mm.
Natural Habitat
Burrows beneath the skin of humans and other mammals; they thrive in the epidermis.
Diet & Feeding
Feeds on human skin cells and fluids within the burrows they excavate.
Behavior Patterns
Females tunnel into the upper layer of the skin (stratum corneum) to lay eggs. This burrowing causes intense itching, especially at night. They complete their life cycle (egg, larva, nymph, adult) entirely on the host.
Risks & Benefits
Risks: Causes scabies, a highly contagious skin infestation characterized by severe itching and a pimple-like rash. Scratching can lead to secondary bacterial skin infections (like Staph or Strep). Benefits: None to humans or ecosystems, they are strictly parasitic.