“…It was introduced into southern Brazil in the 1970s and today has been distributed widely throughout the Neotropical region (Guimarães et al, 1978;Prado and Guimarães, 1982). This fly is important because of its high natural population densities, high degrees of synanthopy and endophily, its potential to produce secondary myiasis in humans and other animals, and its use as a forensic indicator (James, 1947;Greenberg, 1971;Guimarães and Papavero, 1999;Oliveira-Costa and Mello-Patiu, 2004;Carvalho et al, 2004;Sukontason et al, 2005;Carvalho and Von Zuben, 2006). Because C. megacephala feeds and breeds easily in human and animal feces, carrion, foodstuffs, liver and fish (Laurence, 1981;Baumgartner and Greenberg, 1984;d'Almeida, 1993), it is a potential mechanical vector of viruses, bacteria and other enteropathogenic organisms (Greenberg, 1971;1973;Guimarães et al, 1979).…”