Scabies Mite (also known as the Itch Mite)
Scientific Name: Sarcoptes scabiei var. hominis
Order & Family: Order: Sarcoptiformes, Family: Sarcoptidae
Size: Microscopic; females are roughly 0.3 to 0.45 mm long, while males are significantly smaller (0.2 to 0.25 mm).
Natural Habitat
The epidermis (upper layer) of human skin, particularly in folds or crevices like between fingers, wrists, armpits, and genitals.
Diet & Feeding
They feed on dissolved human tissues and fluids within the skin layers, not blood.
Behavior Patterns
The female mite burrows into the top layer of the skin to lay eggs (creating the characteristic S-shaped burrows). The lifecycle from egg to adult takes about 10-14 days. They spread primarily through prolonged, direct skin-to-skin contact.
Risks & Benefits
Risks: Causes scabies, a highly contagious skin infestation characterized by intense itching (especially at night) and a rash. Secondary bacterial infections (like impetigo) can occur due to scratching. Benefits: None; they are exclusively parasitic.
Identified on: 2/24/2026