Pylomotor fibers are microorganisms from the group of bacilli belonging to the family of microscopic fungi. Their name is due to the presence of small black bodies at the old ends of the hairs - “hair balls” (pilotia), similar to small black grains.
The genus Pilomarix consists of two species of pilomotor fibers - S. vulgaris and F. pilomorale. Both species are anaerobes. Kinetostats 5-40 microns,