The U.S. National Mite Collection and staff are located in Building 005 (Rooms 001, 002, and 008) of the USDA-ARS Henry A. Wallace Beltsville Agricultural Research Center, Beltsville, MD. The associated library consists of 130 volumes and 95 linear feet of reprints. The collection has about 332,000 slides and 1,925 primary types. The SEL staff includes R.L. Smiley (Retired, resident cooperating scientist) and R. Ochoa (Research Associate).