Itch mite (Scabies)

Human skin, specifically the stratum corneum (outermost layer)

Skin cells and extracellular fluid

Female mites burrow into the skin to lay eggs, creating tiny, wavy tunnels. They are most active at night, which coincides with increased itching in hosts.

Causes scabies, a highly contagious skin infestation characterized by intense itching and rashes. Can lead to secondary bacterial infections from scratching. Provide no ecosystem benefits.