Under a magnification of 100X, this scanning electron microscopic (SEM) image, revealed some of the ultrastructural morphology exhibited by a grouping of ham mites, Tyrophagus putrescentiae. See PHIL 16855, for a light photomicrograph of a single female ham mite. The ham mite is an agricultural pest, at times, infesting high moisture grain, semi-moist pet foods, cheeses, and dried meats. It is also referred to as the cheese mite, mold mite or copra mite. Their presence is ubiquitous, and with their high rate of reproductive behavior, they are very difficult to control.