Demodex sydneyfolliculorum

Article on Demodex sydneyfolliculorum at Pseudo-Wikipedia.

Demodex sydneyfolliculorum is a microscopic mite that can only survive on the skin of humans in Sydney, Australia. Most people in Sydney have D. sydneyfolliculorum on their skin. Usually, the mites do not cause any harm, and are therefore considered an example of endemic urban commensalism rather than parasitism. If D. sydneyfolliculorum does cause disease, this is known as Sydney demodicosis.