Scabies Mite (or Human Itch Mite)

Scientific Name: Sarcoptes scabiei var. hominis

Order & Family: Order: Sarcoptiformes / Family: Sarcoptidae

Size: Microscopic; adult females are approximately 0.30–0.45 mm long (barely visible to the naked eye as a tiny white/dark speck, but easier seen with a magnifying glass or dermatoscope).

Scabies Mite (or Human Itch Mite)

Natural Habitat

The epidermis (upper layer) of human skin. They burrow into the stratum corneum to live and deposit eggs.

Diet & Feeding

Tissue fluid and skin cells within the burrows they create in the human epidermis.

Behavior Patterns

These mites are obligate parasites. The female burrows into the skin, laying 2-3 eggs per day as she advances. The burrows appear as thin, wavy lines on the skin. They are most active at night, which coincides with intense itching. The life cycle from egg to adult takes about 10-14 days.

Risks & Benefits

Risks: Highly contagious and causes Scabies, a skin infestation characterized by intense itching (especially at night) and a pimple-like rash. Secondary bacterial infections (like impetigo) can occur from scratching. Benefits: None; they are strictly parasitic.

Identified on: 3/7/2026