It was found that the soil layer in which a large number of Platypleura kaempferi nymphs were observed was located at 10-30cm from the soil surface. About 70% of the nymphs were also found under the ground at a distance of 60-140cm from the trunk of the host tree. The mean density of nymphs per 1m² of ground surface under a loquat fruit tree crown was calculated to be 32.2, although marked variations were noted.