The species composition of adult fruit flies and the faunistic study were determined. The populational fluctuation of fruit flies was correlated to climatic factors, by means of the coefficient of Pearson (p < 0.05). The samplings were carried out in the Picadinha Forest Reserve (22º09'20,5"S and 54º59'03,7"W/22º08'32,6"S and 55º00'01,2"W), at the Fazenda Paradouro II, municipality of Dourados. Eleven McPhail traps were installed at the edges of the Reserve and checked weekly, from May 2001 to May 2002. A check list of the 14 species of fruit flies caught in the traps is given. Anastrepha elegans Blanchard, 1961 was the dominant species. This is the first report of adult populations of Anastrepha amita Zucchi, 1979, A. elegans and Anastrepha pseudoparallela (Loew, 1873) in the State of Mato Grosso do Sul. Relative humidity was negatively correlated with the capture of A. elegans and Anastrepha serpentina (Wiedemann, 1830). Precipitation and mean temperature showed a positive correlation with the capture of Anastrepha sororcula Zucchi, 1979 and A. pseudoparallela, respectively.
Anastrepha spp.; Ceratitis capitata; climatic factors; McPhail traps; native forest
