From September 1984 to August 1985, a faunal survey of the house dust mites was carried out in Shanghai. Samples were taken from 15 occuppied homes and 2 inns. 1023 dust samples were collected by vacuum cleaner from pillows, sofas, mattresses, woolen jackets and room floors around the beds in every four weeks. A total of 4921 living mites were collected. Among them 4413 (89.68%) of the specimens were identified as 21 specks belonging to 4 suborders, 9 familie s and 16 genera. Dermatophagoides pteronyssinus ...