Mite fauna found in house-dust from the residences of suspected acarine dermatitis patients

Abstract

From July 1984 to October 1990,the mite faunas were studied in the house-dust from the residences of 61 patients (17 males and 44 females) with suspected acarine dermatitis. The human infestation of mites occurred most frequently in June to November every year. The highest incidence was observed in females (65.6%) between teens and fifties. Eighteen species in 10 families were found in 47 (77.0%) out of 61 cases, and dominant species were Dermatophagoides farinae (49.2%), D. pteronyssinus (29.5%), Haplochthonius simplex (26.2%), Chelacaropsis moorei (23.0%), Cosmochthonius reticulatus (19.7%), and others. In 25 cases (41.0%), 5 biting mite families such as Cheyletidae (20 cases), Laelapidae (6 cases), Dermanyssidae (4 cases), Ornithonyssus bacoti (2 cases) and Pyemotidae (1 case) were found.