[The occurrence of Diptera in living quarters]

More than 150 species of Diptera belonging to 46 families were caught in a flat in the outskirts of Berlin between April and October 1986. 2148 specimens were collected. Fannia canicularis was the most frequent species with 726 specimens. Drosophila melanogaster, Culex pipiens, Lucilia sericata, Sarcophaga carnaria, Calliphora vicina, Muscina stabulans and Fannia manicata were other important synanthropic flies, which inclusively Fannia canicularis amounted 55% of the total catching rate. The remaining species of Diptera have only an insignificant medical importance, because of the random occurrence in flats or of their small size. A brief assessment of the sanitary important species is given.