Itch Mite (or Scabies Mite)
Scientific Name: Sarcoptes scabiei var. hominis
Order & Family: Order: Sarcoptiformes, Family: Sarcoptidae
Size: Microscopic; females are roughly 0.30–0.45 mm long and 0.25–0.35 mm wide; males are about half that size.
Natural Habitat
The epidermis (outer layer) of human skin, particularly in folds like between fingers, wrists, elbows, and armpits.
Diet & Feeding
They feed on dissolved human tissue and skin cells while burrowing, not blood.
Behavior Patterns
Female mites burrow into the upper layer of the skin to create tunnels where they live and lay eggs. The burrow appears as a fine, wavy, and slightly raised greyish or skin-colored line (as seen in the image). The life cycle from egg to adult takes about 10-14 days.
Risks & Benefits
Risks: Identify as a parasite causing Scabies. This infestation causes intense itching (especially at night) and a pimple-like rash. Scratching can lead to secondary bacterial infections like impetigo or cellulitis. It is highly contagious through direct skin-to-skin contact. No ecological benefits.
Identified on: 2/17/2026