This research was carried out in the oil extraction field located in Urucu River Basin, Coari, State of Amazonas, Brazil, during the months of April, June and October of 2007. A total of 16 areas were sampled, 12 of them were gaps and four forests, arranged in four environments (gaps litlle-recovered, gaps semi-recovered, gaps well-recovered and preserved forest). A total of 7,215 calliphorid flies was captured belonging to 16 species and only one species, Chloroprocta idioidea (Robineau-Desvoidy, 1830), represented 88.06% of this total. The abundance patterns of the family were not different among the environments, however they were different for the following species: Eumesembrinella randa (Walker, 1849), Hemilucilia semidiaphana (Rondani, 1850) and Paralucilia adespota Dear, 1985 The estimated richness was significantly different between the environments and showed two groups: I, gaps litlle-recovered (C1) and gaps semi-recovered (C2); II, gaps well-recovered (C3) and preserved forest (MT).
Brazilian Amazon; blowflies; Oestroidea; Neotropical Region
