Abstract
Flies occurring from dung of cow, horse and pig were investigated in Hokkaido, Japan. A total of 53 species of the flies belonging to 8 families was reared in two localities; these species were 2 of Stratiomyiidae, 8 of Sepsidae, 11 of Sphaeroceridae, 2 of Scathophagidae, 6 of Anthomyiidae, 22 of Muscidae, and 2 of Sarcophagidae. Numbers of species emerged from droppings of cow, horse and pig were 44, 23, and 23 species, respectively. Cow droppings in Otofuke yielded a large number and a wide variety of species of Anthomyiidae and Muscidae. Information concerning faunal composition in dung and dung preferences for each species is provided.