Biotemas (Jun 2006)
Occurrence of microhimenopterous parasitoids of Archisepsis scabra (Loew) (Diptera: Sepsidae) on bovine dung and buffalo
Abstract
This study had the objective of verifying the occurrence of microhimenopterous parasitoids of Archisepsis scabra (Loew) (Diptera: Sepsidae) present in bovine and buffalo feces in the south of the state of Goiás, Brazil, from September 2000 to June 2004. The pupae were isolated by flotation and individually placed in gelatin capsules until the emergence of the domestic flies and/or their parasitoids. A total of 169 puparia of A. scabra (Loew) (Diptera: Sepsidae) were obtained from bovine faces, from which ten specimens of the parasitoid Spalangia drosophilae Ashmead (Hymenoptera: Pteromalidae), one specimen of Spalangia nigroaenea Curtis (Hymenoptera: Pteromalidae) and eight specimens of Triplasta atrocoxalis (Ashmead) (Hymenoptera: Pteromalidae) emerged. The percentage of parasitism was 11.2%. The parasitism percentages presented by the parasitoids S. drosophilae, S. nigroaenea and T. atrocoxalis were 5.9%, 0.6% and 4.7%, respectively. From buffalo feces, 310 puparia of A. scabra were obtained, from which four specimens of Paraganaspis egeria Díaz, Gallardo and Walsh (Hymenoptera: Figitidae), one specimen of S. drosophilae and one specimen of Trichopria sp. (Hymenoptera: Diapriidae) emerged. The percentage of parasitism was 1.9%. The parasitism percentages presented by the parasitoids P. egeria, S. drosophilae and Trichopria sp. were 1.3%, 0.3% and 0.3%, respectively.
