This study determined the species of parasitoids of Diptera present in forest, rural, and urban areas in the municipality of Monte Alegre, MG, from March to November 2006. The percentages of parasitism in forest, rural, and urban areas were 14.3%, 11.0%, and 18.8%, respectively. The most frequent species (34.7%) was Triplasta atrocoxalis (Ashmead) (Hymenoptera: Figitidae).

RESUMO Este estudo teve como objetivo determinar as espécies de parasitóides presentes nos matadouros, em Itumbiara, GO, e Tupaciguara, MG, Brasil, no período de março a dezembro de 2005. As pupas dos dípteros foram separadas do substrato pelo método de flotação e individualizadas em cápsulas de gelatina até a emergência dos dípteros e/ou dos seus parasitóides. As espécies mais freqüentes foram: Brachymeria podagrica (Fabricius) (Hymenoptera: Chalcididae), com 80% em Itumbiara e Pachycrepoideus vindemmiae (Rondani) (Hymenoptera: Pteromalidae), com 82,4% em Tupaciguara.

ABSTRACT This study had the objective of determining the species of parasitoids present in slaughterhouses, in Itumbiara, GO and Tupaciguara, MG, Brazil, from January to December 2005. The dipterous pupae were obtained by the flotation method. They were individually placed in gelatin capsules until the emergence of the flies and/or their parasitoids. The most frequent species were: Brachymeria podagrica (Fabricius) (Hymenoptera: Chalcididae), with 80% in Itumbiara, and Pachycrepoideus vindemmiae (Rondani) (Hymenoptera: Pteromalidae), with 82.4% in Tupaciguara.

RESUMO O objetivo do presente estudo é relatar a primeira ocorrência do parasitóide Spalangia drosophilae Ashmead, 1887 (Hymenoptera: Pteromalidae) em pupas Fannia pusio (Wiedemann, 1830) (Diptera: Fanniidae). Para coleta dos insetos foi utilizado como isca fígado bovino. Obtiveram-se 265 pupas de F. pusio, das quais 4 emergiram parasitóides pertencentes à espécie S. drosophilae. A porcentagem de parasitismo foi de 1,5%.

ABSTRACT This article reports the first occurrence of the parasitoid Spalangia drosophilae Ashmead, 1887 (Hymenoptera: Pteromalidae) on pupae of Fannia pusio (Wiedemann, 1830) (Diptera: Fanniidae). Bovine liver was used as bait to collect the insects. In the study, 265 pupae of F. pusio were obtained, 4 of which yielded the parasitoid S. drosophilae. The percentage of parasitism was 1.5%.