author(s)
Susi Soviana, Upik Kesumawati Hadi and Agus Kurniawan Putra

abstract
Flies cause problem and be important vectors of several diseases of medical and veterinary. There are non and bloodsucking flies in livestock. The existence of flies on a dairy farm cause decrease of cows productivity, body weight and as pathogens transmitter. The purpose of this study was to determine of haematophagus flies diversity and the degree of its infestation, also flies daily activites on cows. The study was conducted in 27 dairy farms at Cibungbulang area, which divided into three categories namely Low Density Farms (1-10 cattles/cowshed), Medium Density Farms (11-20 cattles/cowshed) and High Density Farms (more than 20 cattles/cowshed). In all farms, flies collected by sweeping net on five cattle bodies inside the cowshed. It took 3-5 minutes to get flies for every cattle with the net. There were 5 species muscidae haematophagus flies, i.e. Stomoxys calcitrans (19, 15%), Haematobia exigua (5,40%), S. indicus (3.20%), S. bengalensis (0.32%) and S. sitiens ( 0,02%) from total 26 flies species caught in the farm. The highest of S. calcitrans infestation discovered on Low Density farm, followed by H. exigua. The bloodsucking flies that have activities during the day were S calcitrans and H. exigua, while S. sitiens, S bengalensis and S. indicus were active in the morning and evening.