Materials and methods: This cross-sectional study was done in 2015. The adult flies were hunted with hand and using the plastic bottle with inverted opening, fixed with entomology needle and killed in the glass container having the calcium cyanide. In the laboratory the flies were identified to the species level using Krzysztof szpila (2013) and the avail-able descriptions and explanations were used. The gender identification in the Muscidae and calliphoridae families was done referring to the eye distance, but in the sarcophagidae family by observation of the male genital organ at the abdomen end. The descriptive statistic was used in presenting the obtained data.

Results: In all, 3355 flies from three families of Muscidae, caliphoridae and Sarcophagidae were hunted of them 638 were hunted by trap method and 2717 by the net method. From Sarcophagidae family 64 flies were hunted comprising 12(0.36%) and 52 (1.56%) sarcophaga Africa and sarcophaga argyrostama. From the caliphoridae family, in all 406 flies were hunted comprising Lucilia sericata 150 (%4.47); chrsomyia albiceps 180(5.36%); challiphora vicina 76 (2.26% ).Of the Muscidae family, in all 2885 flies were hunted, including Musca domestica (76.30%); Muscina stabulans 325(9.69%). Highest prevalence rate of the flies was observed in the months’ of June and July (summer)16.43% and 17.58% respectively, but the lowest rate in the months of February and march (winter). In all of the 3355 hunted flies, 1897(56.54%) were female and 1458(43.46%) were male.

Conclusion: In this study, in all 7 medically important species of the flies were hunted. Knowing that the high prevalence of flies is observed in the summer season at the Sari Township, the control of them should be done more attention. For the completion of the data on medically important flies at Sari Township, beside the morphologic methods the molecular methods are recommended.