Community identification
Human Itch Mite
Sarcoptes scabiei var. hominis
- Order & Family
- Order: Sarcoptiformes; Family: Sarcoptidae
- Size
- 0.30 to 0.45 mm (females), 0.20 to 0.25 mm (males); barely visible to the naked eye.
Natural Habitat
The epidermis (outer layer of skin) of humans; they are obligate parasites.
Diet & Feeding
Skin cells and liquids (extracellular fluid) obtained by burrowing into the host's skin.
Behavior Patterns
Mites burrow into the stratum corneum to lay eggs. They spread through direct skin-to-skin contact or contaminated bedding/clothing. Symptoms of infestation (scabies) often take 2-6 weeks to appear.
Risks & Benefits
Causes Scabies, characterized by intense itching and red rashes. Secondary infections from scratching (like impetigo) are possible. There are no ecological benefits to this parasite.