It was reported the occurrence of Spalangia endius Walker, 1839 (Hymenoptera, Pteromalidae) as a parasitoid of pupae of Musca domestica Linnaeus, 1758 (Diptera, Muscidae) and Stomoxys calcitrans Linnaeus, 1758 (Diptera, Muscidae) in the extreme Southern of Brazil. The collection of pupae was performed in January and February, 2008. The pupae of M. domestica and S. calcitrans were collected from bovine feces using the flotation method. The pupae were individualized in glass tubes and maintained in acclimatized chamber at 27±2ºC with relative air humidity > 70% until the emergence of the flies or the parasitoids. The referred occurrence consists in the first report to Rio Grande do Sul.
house fly; stable fly; natural enemy