Itch mite
Scientific Name: Sarcoptes scabiei
Order & Family: Order: Sarcoptiformes, Family: Sarcoptidae
Size: Microscopic; adult females are approximately 0.30–0.45 mm long and 0.25–0.35 mm wide; males are about half that size.
Natural Habitat
Burrows within the epidermis (upper layer) of mammalian skin, including humans.
Diet & Feeding
They feed on skin cells and interstitial fluid as they burrow through the epidermis.
Behavior Patterns
These mites are obligate parasites that spend their entire life cycle on the host. Adult females burrow into the skin to lay eggs, creating serpentine tunnels. The biological cycle from egg to adult takes about 10-14 days.
Risks & Benefits
Risks: High. They cause scabies, a highly contagious skin infestation characterized by intense itching and a pimple-like rash. Scratching can lead to secondary bacterial infections like impetigo. Benefits: None known to ecosystems or humans.
Identified on: 3/6/2026