The JapanSociety ofMedicalEntomology andZoology (Med. Entomol, Zool,Vol, 51 No. 1p,(49)(50)(51)(52)(53)(54) 2000] ResearchNote Survey on flies of the of construction in genus Musca (Diptera, Muscidae) in the process and development of human settlements a tropical forest, Indonesia Mitsuhiro IwAsAi), Hiromu KuRAHAsHi2} and Motoyoshi MoGi3) ') Laboratoty ofEntomolcrg)" Obihiro Uitiversdy ofAgn'cuttutie and Veterinary Medicine, Obihiro, Hbkkaido, 080-8555 koan 2} Taxonomy and EcolqE[y Laboraton"

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... Partment of Mledical Entomolog y, IVbtional institute of hijfectious Diseases, 7byama I=23-1, Shinjuleu-ku, 7bhyo, 162-8640.fttpan Abstract: Invasive phenomenon and incidence of the Musca species in the process of construction and development of human settlements in a tropical forest were observed with bait-traps in the dry season in Sulawesi and Seram, east Indonesia. Flies collected at 7 stations in the Toili district of Central Sulawesi numbered 2,215 comprising 3 families, viz., Muscidae, Calliphoridae and Sarcophagidae. Of them. 47 individuals of 3 species, Musca domestica Linnaeus, M ventrosa Wiedemann, and M sorbens Wiedemann, were collected. No Musca species was caught in the uninhabited forest. M domestica and ILcC ventrosa were caught in the deforestation area and at the boundary between the natural forest and a new village. Adi sorbens, together with M domestica and M ventrosa, was caught in a new village, an old village and the Toili town. The proportion of the Musca species in total flies increased with the lapse of time after construction of human settlements. In Manusela village isolated by a tropical forest in Seram, M] sorbens occupied 98.3% of the M'usca species collected, while Ml domestica were very few, The JapanSociety ofMedicalEntomology andZoology 50